./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/triangular-longest-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/triangular-longest-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 12:29:58,901 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 12:29:58,970 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-12-02 12:29:58,975 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 12:29:58,976 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 12:29:59,009 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 12:29:59,009 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 12:29:59,010 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 12:29:59,011 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 12:29:59,011 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 12:29:59,012 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 12:29:59,012 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 12:29:59,013 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 12:29:59,013 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 12:29:59,014 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 12:29:59,014 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 12:29:59,015 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 12:29:59,015 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 12:29:59,016 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 12:29:59,016 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 12:29:59,017 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 12:29:59,017 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 12:29:59,018 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 12:29:59,018 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 12:29:59,025 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 12:29:59,026 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 12:29:59,026 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 12:29:59,027 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 12:29:59,027 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 12:29:59,027 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 12:29:59,028 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 12:29:59,028 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 12:29:59,028 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 12:29:59,029 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 12:29:59,029 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 12:29:59,029 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 12:29:59,029 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 12:29:59,030 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 12:29:59,030 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 12:29:59,030 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 12:29:59,030 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:29:59,031 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 12:29:59,031 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 12:29:59,031 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 12:29:59,031 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 12:29:59,031 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 12:29:59,031 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 12:29:59,032 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 12:29:59,032 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 [2023-12-02 12:29:59,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 12:29:59,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 12:29:59,270 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 12:29:59,271 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 12:29:59,272 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 12:29:59,273 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/pthread/triangular-longest-2.i [2023-12-02 12:30:02,057 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 12:30:02,313 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 12:30:02,314 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/sv-benchmarks/c/pthread/triangular-longest-2.i [2023-12-02 12:30:02,329 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/data/cb0993b2f/7c3eef22390f4cec8ce4195d2985cf0b/FLAG27a6d69d1 [2023-12-02 12:30:02,343 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/data/cb0993b2f/7c3eef22390f4cec8ce4195d2985cf0b [2023-12-02 12:30:02,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 12:30:02,348 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 12:30:02,349 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 12:30:02,349 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 12:30:02,354 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 12:30:02,355 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:30:02" (1/1) ... [2023-12-02 12:30:02,356 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31e69625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:30:02, skipping insertion in model container [2023-12-02 12:30:02,357 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:30:02" (1/1) ... [2023-12-02 12:30:02,401 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 12:30:02,701 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:30:02,709 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 12:30:02,749 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:30:02,775 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:30:02,775 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:30:02,781 INFO L206 MainTranslator]: Completed translation [2023-12-02 12:30:02,782 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:30:02 WrapperNode [2023-12-02 12:30:02,782 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 12:30:02,783 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 12:30:02,783 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 12:30:02,783 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 12:30:02,789 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:30:02" (1/1) ... [2023-12-02 12:30:02,802 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:30:02" (1/1) ... [2023-12-02 12:30:02,819 INFO L138 Inliner]: procedures = 169, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2023-12-02 12:30:02,819 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 12:30:02,820 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 12:30:02,820 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 12:30:02,820 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 12:30:02,827 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:30:02" (1/1) ... [2023-12-02 12:30:02,827 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:30:02" (1/1) ... [2023-12-02 12:30:02,830 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:30:02" (1/1) ... [2023-12-02 12:30:02,830 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:30:02" (1/1) ... [2023-12-02 12:30:02,837 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:30:02" (1/1) ... [2023-12-02 12:30:02,840 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:30:02" (1/1) ... [2023-12-02 12:30:02,842 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:30:02" (1/1) ... [2023-12-02 12:30:02,843 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:30:02" (1/1) ... [2023-12-02 12:30:02,846 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 12:30:02,847 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 12:30:02,848 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 12:30:02,848 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 12:30:02,849 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:30:02" (1/1) ... [2023-12-02 12:30:02,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:30:02,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:30:02,875 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 12:30:02,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 12:30:02,909 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-12-02 12:30:02,909 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-12-02 12:30:02,910 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-12-02 12:30:02,910 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-12-02 12:30:02,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 12:30:02,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-02 12:30:02,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 12:30:02,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 12:30:02,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 12:30:02,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 12:30:02,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-02 12:30:02,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 12:30:02,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 12:30:02,913 WARN L213 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-02 12:30:03,026 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 12:30:03,027 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 12:30:03,162 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 12:30:03,254 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 12:30:03,254 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 12:30:03,254 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:30:03 BoogieIcfgContainer [2023-12-02 12:30:03,254 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 12:30:03,257 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 12:30:03,258 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 12:30:03,261 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 12:30:03,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:30:02" (1/3) ... [2023-12-02 12:30:03,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c6fdd05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:30:03, skipping insertion in model container [2023-12-02 12:30:03,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:30:02" (2/3) ... [2023-12-02 12:30:03,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c6fdd05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:30:03, skipping insertion in model container [2023-12-02 12:30:03,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:30:03" (3/3) ... [2023-12-02 12:30:03,264 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-2.i [2023-12-02 12:30:03,281 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 12:30:03,281 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-12-02 12:30:03,281 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-02 12:30:03,315 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-02 12:30:03,338 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 35 transitions, 78 flow [2023-12-02 12:30:03,389 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 305 states, 299 states have (on average 3.0267558528428093) internal successors, (905), 304 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:03,406 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 12:30:03,411 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7dabe41, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 12:30:03,411 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-12-02 12:30:03,414 INFO L276 IsEmpty]: Start isEmpty. Operand has 305 states, 299 states have (on average 3.0267558528428093) internal successors, (905), 304 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:03,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-12-02 12:30:03,420 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:03,421 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-12-02 12:30:03,422 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:03,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:03,427 INFO L85 PathProgramCache]: Analyzing trace with hash 6737, now seen corresponding path program 1 times [2023-12-02 12:30:03,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:30:03,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541670569] [2023-12-02 12:30:03,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:03,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:30:03,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:03,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:03,699 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:30:03,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541670569] [2023-12-02 12:30:03,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541670569] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:03,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:03,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 12:30:03,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075132479] [2023-12-02 12:30:03,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:03,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:30:03,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:30:03,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:30:03,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:30:03,730 INFO L87 Difference]: Start difference. First operand has 305 states, 299 states have (on average 3.0267558528428093) internal successors, (905), 304 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:03,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:03,798 INFO L93 Difference]: Finished difference Result 279 states and 779 transitions. [2023-12-02 12:30:03,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:30:03,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-12-02 12:30:03,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:03,815 INFO L225 Difference]: With dead ends: 279 [2023-12-02 12:30:03,815 INFO L226 Difference]: Without dead ends: 279 [2023-12-02 12:30:03,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:30:03,821 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 25 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:03,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 15 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 12:30:03,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2023-12-02 12:30:03,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2023-12-02 12:30:03,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 274 states have (on average 2.843065693430657) internal successors, (779), 278 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:03,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 779 transitions. [2023-12-02 12:30:03,885 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 779 transitions. Word has length 2 [2023-12-02 12:30:03,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:03,885 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 779 transitions. [2023-12-02 12:30:03,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:03,886 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 779 transitions. [2023-12-02 12:30:03,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-12-02 12:30:03,886 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:03,886 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-12-02 12:30:03,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 12:30:03,887 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:03,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:03,888 INFO L85 PathProgramCache]: Analyzing trace with hash 6738, now seen corresponding path program 1 times [2023-12-02 12:30:03,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:30:03,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784519345] [2023-12-02 12:30:03,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:03,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:30:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:04,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:04,013 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:30:04,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784519345] [2023-12-02 12:30:04,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784519345] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:04,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:04,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 12:30:04,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967651920] [2023-12-02 12:30:04,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:04,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:30:04,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:30:04,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:30:04,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:30:04,017 INFO L87 Difference]: Start difference. First operand 279 states and 779 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:04,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:04,060 INFO L93 Difference]: Finished difference Result 278 states and 778 transitions. [2023-12-02 12:30:04,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:30:04,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-12-02 12:30:04,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:04,064 INFO L225 Difference]: With dead ends: 278 [2023-12-02 12:30:04,064 INFO L226 Difference]: Without dead ends: 278 [2023-12-02 12:30:04,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:30:04,067 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 24 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:04,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 16 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 12:30:04,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2023-12-02 12:30:04,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2023-12-02 12:30:04,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 274 states have (on average 2.8394160583941606) internal successors, (778), 277 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:04,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 778 transitions. [2023-12-02 12:30:04,091 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 778 transitions. Word has length 2 [2023-12-02 12:30:04,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:04,092 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 778 transitions. [2023-12-02 12:30:04,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:04,092 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 778 transitions. [2023-12-02 12:30:04,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 12:30:04,093 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:04,093 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 12:30:04,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 12:30:04,093 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:04,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:04,094 INFO L85 PathProgramCache]: Analyzing trace with hash 200868326, now seen corresponding path program 1 times [2023-12-02 12:30:04,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:30:04,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856247154] [2023-12-02 12:30:04,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:04,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:30:04,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:04,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:04,152 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:30:04,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856247154] [2023-12-02 12:30:04,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856247154] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:04,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:04,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 12:30:04,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281479024] [2023-12-02 12:30:04,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:04,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:30:04,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:30:04,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:30:04,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:30:04,155 INFO L87 Difference]: Start difference. First operand 278 states and 778 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:04,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:04,193 INFO L93 Difference]: Finished difference Result 273 states and 768 transitions. [2023-12-02 12:30:04,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:30:04,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-12-02 12:30:04,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:04,196 INFO L225 Difference]: With dead ends: 273 [2023-12-02 12:30:04,196 INFO L226 Difference]: Without dead ends: 273 [2023-12-02 12:30:04,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:30:04,198 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 20 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:04,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 14 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 12:30:04,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-12-02 12:30:04,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2023-12-02 12:30:04,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 270 states have (on average 2.8444444444444446) internal successors, (768), 272 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:04,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 768 transitions. [2023-12-02 12:30:04,216 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 768 transitions. Word has length 5 [2023-12-02 12:30:04,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:04,216 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 768 transitions. [2023-12-02 12:30:04,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:04,217 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 768 transitions. [2023-12-02 12:30:04,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 12:30:04,217 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:04,217 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 12:30:04,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 12:30:04,218 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:04,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:04,218 INFO L85 PathProgramCache]: Analyzing trace with hash 200868327, now seen corresponding path program 1 times [2023-12-02 12:30:04,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:30:04,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323716062] [2023-12-02 12:30:04,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:04,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:30:04,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:04,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:04,288 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:30:04,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323716062] [2023-12-02 12:30:04,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323716062] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:04,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:04,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 12:30:04,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402652933] [2023-12-02 12:30:04,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:04,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:30:04,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:30:04,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:30:04,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:30:04,291 INFO L87 Difference]: Start difference. First operand 273 states and 768 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:04,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:04,325 INFO L93 Difference]: Finished difference Result 268 states and 758 transitions. [2023-12-02 12:30:04,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:30:04,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-12-02 12:30:04,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:04,328 INFO L225 Difference]: With dead ends: 268 [2023-12-02 12:30:04,329 INFO L226 Difference]: Without dead ends: 268 [2023-12-02 12:30:04,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:30:04,330 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 19 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:04,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 15 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 12:30:04,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2023-12-02 12:30:04,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2023-12-02 12:30:04,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 266 states have (on average 2.8496240601503757) internal successors, (758), 267 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:04,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 758 transitions. [2023-12-02 12:30:04,343 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 758 transitions. Word has length 5 [2023-12-02 12:30:04,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:04,343 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 758 transitions. [2023-12-02 12:30:04,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:04,343 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 758 transitions. [2023-12-02 12:30:04,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 12:30:04,345 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:04,345 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:04,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 12:30:04,346 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:04,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:04,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1605654404, now seen corresponding path program 1 times [2023-12-02 12:30:04,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:30:04,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711798671] [2023-12-02 12:30:04,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:04,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:30:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:04,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:04,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:30:04,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711798671] [2023-12-02 12:30:04,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711798671] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:04,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:04,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:30:04,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890895409] [2023-12-02 12:30:04,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:04,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:30:04,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:30:04,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:30:04,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 12:30:04,522 INFO L87 Difference]: Start difference. First operand 268 states and 758 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:04,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:04,568 INFO L93 Difference]: Finished difference Result 243 states and 683 transitions. [2023-12-02 12:30:04,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:30:04,569 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-12-02 12:30:04,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:04,571 INFO L225 Difference]: With dead ends: 243 [2023-12-02 12:30:04,571 INFO L226 Difference]: Without dead ends: 193 [2023-12-02 12:30:04,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 12:30:04,573 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 23 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:04,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 26 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 12:30:04,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-12-02 12:30:04,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2023-12-02 12:30:04,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 2.7760416666666665) internal successors, (533), 192 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:04,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 533 transitions. [2023-12-02 12:30:04,583 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 533 transitions. Word has length 12 [2023-12-02 12:30:04,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:04,583 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 533 transitions. [2023-12-02 12:30:04,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:04,583 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 533 transitions. [2023-12-02 12:30:04,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 12:30:04,585 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:04,585 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:04,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 12:30:04,585 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:04,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:04,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1605653309, now seen corresponding path program 1 times [2023-12-02 12:30:04,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:30:04,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702773301] [2023-12-02 12:30:04,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:04,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:30:04,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:04,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:04,701 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:30:04,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702773301] [2023-12-02 12:30:04,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702773301] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:04,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:04,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 12:30:04,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659280522] [2023-12-02 12:30:04,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:04,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 12:30:04,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:30:04,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 12:30:04,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 12:30:04,703 INFO L87 Difference]: Start difference. First operand 193 states and 533 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:04,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:04,816 INFO L93 Difference]: Finished difference Result 258 states and 693 transitions. [2023-12-02 12:30:04,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 12:30:04,816 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-12-02 12:30:04,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:04,818 INFO L225 Difference]: With dead ends: 258 [2023-12-02 12:30:04,819 INFO L226 Difference]: Without dead ends: 203 [2023-12-02 12:30:04,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 12:30:04,820 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 36 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:04,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 32 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 12:30:04,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2023-12-02 12:30:04,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2023-12-02 12:30:04,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 2.737623762376238) internal successors, (553), 202 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:04,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 553 transitions. [2023-12-02 12:30:04,831 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 553 transitions. Word has length 12 [2023-12-02 12:30:04,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:04,831 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 553 transitions. [2023-12-02 12:30:04,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:04,831 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 553 transitions. [2023-12-02 12:30:04,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 12:30:04,836 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:04,837 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:04,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 12:30:04,837 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:04,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:04,838 INFO L85 PathProgramCache]: Analyzing trace with hash 734109375, now seen corresponding path program 1 times [2023-12-02 12:30:04,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:30:04,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361594778] [2023-12-02 12:30:04,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:04,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:30:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:04,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:04,968 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:30:04,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361594778] [2023-12-02 12:30:04,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361594778] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:04,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:04,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 12:30:04,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725629597] [2023-12-02 12:30:04,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:04,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 12:30:04,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:30:04,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 12:30:04,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 12:30:04,970 INFO L87 Difference]: Start difference. First operand 203 states and 553 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:05,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:05,165 INFO L93 Difference]: Finished difference Result 515 states and 1395 transitions. [2023-12-02 12:30:05,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 12:30:05,165 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-12-02 12:30:05,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:05,169 INFO L225 Difference]: With dead ends: 515 [2023-12-02 12:30:05,169 INFO L226 Difference]: Without dead ends: 434 [2023-12-02 12:30:05,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-02 12:30:05,171 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 77 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:05,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 53 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 12:30:05,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2023-12-02 12:30:05,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 261. [2023-12-02 12:30:05,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 2.703846153846154) internal successors, (703), 260 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:05,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 703 transitions. [2023-12-02 12:30:05,185 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 703 transitions. Word has length 15 [2023-12-02 12:30:05,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:05,185 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 703 transitions. [2023-12-02 12:30:05,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:05,186 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 703 transitions. [2023-12-02 12:30:05,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 12:30:05,187 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:05,187 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:05,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 12:30:05,187 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:05,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:05,188 INFO L85 PathProgramCache]: Analyzing trace with hash -178987123, now seen corresponding path program 2 times [2023-12-02 12:30:05,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:30:05,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770819534] [2023-12-02 12:30:05,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:05,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:30:05,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:05,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:05,295 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:30:05,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770819534] [2023-12-02 12:30:05,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770819534] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:05,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:05,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 12:30:05,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111011742] [2023-12-02 12:30:05,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:05,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 12:30:05,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:30:05,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 12:30:05,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 12:30:05,297 INFO L87 Difference]: Start difference. First operand 261 states and 703 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:05,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:05,429 INFO L93 Difference]: Finished difference Result 351 states and 899 transitions. [2023-12-02 12:30:05,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 12:30:05,430 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-12-02 12:30:05,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:05,432 INFO L225 Difference]: With dead ends: 351 [2023-12-02 12:30:05,432 INFO L226 Difference]: Without dead ends: 280 [2023-12-02 12:30:05,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-02 12:30:05,433 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 56 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:05,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 49 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 12:30:05,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-12-02 12:30:05,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 220. [2023-12-02 12:30:05,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 2.689497716894977) internal successors, (589), 219 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:05,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 589 transitions. [2023-12-02 12:30:05,444 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 589 transitions. Word has length 15 [2023-12-02 12:30:05,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:05,444 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 589 transitions. [2023-12-02 12:30:05,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:05,445 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 589 transitions. [2023-12-02 12:30:05,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 12:30:05,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:05,446 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:05,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 12:30:05,446 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:05,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:05,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1676688214, now seen corresponding path program 1 times [2023-12-02 12:30:05,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:30:05,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144940640] [2023-12-02 12:30:05,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:05,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:30:05,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:05,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:05,585 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:30:05,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144940640] [2023-12-02 12:30:05,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144940640] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:05,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:05,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 12:30:05,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330417577] [2023-12-02 12:30:05,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:05,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 12:30:05,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:30:05,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 12:30:05,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 12:30:05,587 INFO L87 Difference]: Start difference. First operand 220 states and 589 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:05,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:05,747 INFO L93 Difference]: Finished difference Result 354 states and 917 transitions. [2023-12-02 12:30:05,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 12:30:05,748 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-02 12:30:05,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:05,751 INFO L225 Difference]: With dead ends: 354 [2023-12-02 12:30:05,751 INFO L226 Difference]: Without dead ends: 292 [2023-12-02 12:30:05,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-02 12:30:05,752 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 73 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:05,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 53 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 12:30:05,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-12-02 12:30:05,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 262. [2023-12-02 12:30:05,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 261 states have (on average 2.6934865900383143) internal successors, (703), 261 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:05,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 703 transitions. [2023-12-02 12:30:05,775 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 703 transitions. Word has length 18 [2023-12-02 12:30:05,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:05,775 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 703 transitions. [2023-12-02 12:30:05,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:05,776 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 703 transitions. [2023-12-02 12:30:05,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 12:30:05,777 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:05,777 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:05,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 12:30:05,777 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:05,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:05,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1197175360, now seen corresponding path program 2 times [2023-12-02 12:30:05,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:30:05,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146390518] [2023-12-02 12:30:05,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:05,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:30:05,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:05,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:05,907 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:30:05,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146390518] [2023-12-02 12:30:05,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146390518] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:05,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:05,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 12:30:05,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252947188] [2023-12-02 12:30:05,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:05,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 12:30:05,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:30:05,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 12:30:05,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 12:30:05,910 INFO L87 Difference]: Start difference. First operand 262 states and 703 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:06,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:06,087 INFO L93 Difference]: Finished difference Result 609 states and 1619 transitions. [2023-12-02 12:30:06,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 12:30:06,087 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-02 12:30:06,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:06,092 INFO L225 Difference]: With dead ends: 609 [2023-12-02 12:30:06,092 INFO L226 Difference]: Without dead ends: 547 [2023-12-02 12:30:06,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-12-02 12:30:06,093 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 106 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:06,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 59 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 12:30:06,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2023-12-02 12:30:06,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 292. [2023-12-02 12:30:06,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 2.7663230240549828) internal successors, (805), 291 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:06,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 805 transitions. [2023-12-02 12:30:06,111 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 805 transitions. Word has length 18 [2023-12-02 12:30:06,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:06,111 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 805 transitions. [2023-12-02 12:30:06,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:06,111 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 805 transitions. [2023-12-02 12:30:06,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 12:30:06,112 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:06,112 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:06,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 12:30:06,113 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:06,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:06,113 INFO L85 PathProgramCache]: Analyzing trace with hash -282889570, now seen corresponding path program 3 times [2023-12-02 12:30:06,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:30:06,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555532933] [2023-12-02 12:30:06,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:06,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:30:06,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:06,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:06,222 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:30:06,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555532933] [2023-12-02 12:30:06,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555532933] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:06,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:06,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 12:30:06,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463473402] [2023-12-02 12:30:06,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:06,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 12:30:06,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:30:06,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 12:30:06,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-02 12:30:06,224 INFO L87 Difference]: Start difference. First operand 292 states and 805 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:06,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:06,404 INFO L93 Difference]: Finished difference Result 400 states and 1069 transitions. [2023-12-02 12:30:06,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 12:30:06,404 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-02 12:30:06,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:06,407 INFO L225 Difference]: With dead ends: 400 [2023-12-02 12:30:06,407 INFO L226 Difference]: Without dead ends: 310 [2023-12-02 12:30:06,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-12-02 12:30:06,408 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 104 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:06,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 49 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 12:30:06,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2023-12-02 12:30:06,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 235. [2023-12-02 12:30:06,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 2.713675213675214) internal successors, (635), 234 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:06,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 635 transitions. [2023-12-02 12:30:06,419 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 635 transitions. Word has length 18 [2023-12-02 12:30:06,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:06,419 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 635 transitions. [2023-12-02 12:30:06,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:06,420 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 635 transitions. [2023-12-02 12:30:06,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 12:30:06,421 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:06,421 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:06,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-02 12:30:06,421 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:06,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:06,422 INFO L85 PathProgramCache]: Analyzing trace with hash -352985310, now seen corresponding path program 1 times [2023-12-02 12:30:06,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:30:06,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718172656] [2023-12-02 12:30:06,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:06,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:30:06,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:06,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:06,562 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:30:06,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718172656] [2023-12-02 12:30:06,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718172656] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:30:06,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839687061] [2023-12-02 12:30:06,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:06,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:30:06,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:30:06,566 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:30:06,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 12:30:06,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:06,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:30:06,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:06,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:06,760 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:30:06,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:06,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839687061] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:30:06,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [458388547] [2023-12-02 12:30:06,934 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-02 12:30:06,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 12:30:06,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-12-02 12:30:06,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140085547] [2023-12-02 12:30:06,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 12:30:06,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 12:30:06,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:30:06,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 12:30:06,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-02 12:30:06,937 INFO L87 Difference]: Start difference. First operand 235 states and 635 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:07,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:07,465 INFO L93 Difference]: Finished difference Result 659 states and 1707 transitions. [2023-12-02 12:30:07,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-02 12:30:07,465 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-02 12:30:07,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:07,469 INFO L225 Difference]: With dead ends: 659 [2023-12-02 12:30:07,469 INFO L226 Difference]: Without dead ends: 454 [2023-12-02 12:30:07,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=283, Invalid=839, Unknown=0, NotChecked=0, Total=1122 [2023-12-02 12:30:07,470 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 219 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:07,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 128 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 12:30:07,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2023-12-02 12:30:07,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 388. [2023-12-02 12:30:07,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 2.656330749354005) internal successors, (1028), 387 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:07,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1028 transitions. [2023-12-02 12:30:07,487 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1028 transitions. Word has length 21 [2023-12-02 12:30:07,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:07,488 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 1028 transitions. [2023-12-02 12:30:07,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:07,488 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1028 transitions. [2023-12-02 12:30:07,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-02 12:30:07,489 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:07,489 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:07,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 12:30:07,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-02 12:30:07,690 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:07,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:07,691 INFO L85 PathProgramCache]: Analyzing trace with hash -179377847, now seen corresponding path program 1 times [2023-12-02 12:30:07,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:30:07,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153674650] [2023-12-02 12:30:07,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:07,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:30:07,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:07,859 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:07,859 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:30:07,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153674650] [2023-12-02 12:30:07,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153674650] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:30:07,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716645635] [2023-12-02 12:30:07,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:07,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:30:07,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:30:07,861 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:30:07,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 12:30:07,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:07,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 12:30:07,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:08,050 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:08,050 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:30:08,237 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:08,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716645635] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:30:08,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1012286612] [2023-12-02 12:30:08,238 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-02 12:30:08,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 12:30:08,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-12-02 12:30:08,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650243326] [2023-12-02 12:30:08,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 12:30:08,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-02 12:30:08,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:30:08,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-02 12:30:08,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-12-02 12:30:08,240 INFO L87 Difference]: Start difference. First operand 388 states and 1028 transitions. Second operand has 16 states, 16 states have (on average 3.4375) internal successors, (55), 15 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:08,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:08,684 INFO L93 Difference]: Finished difference Result 671 states and 1690 transitions. [2023-12-02 12:30:08,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-02 12:30:08,684 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 15 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-12-02 12:30:08,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:08,689 INFO L225 Difference]: With dead ends: 671 [2023-12-02 12:30:08,689 INFO L226 Difference]: Without dead ends: 514 [2023-12-02 12:30:08,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=260, Invalid=732, Unknown=0, NotChecked=0, Total=992 [2023-12-02 12:30:08,690 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 229 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:08,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 125 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 12:30:08,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2023-12-02 12:30:08,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 409. [2023-12-02 12:30:08,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 408 states have (on average 2.622549019607843) internal successors, (1070), 408 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:08,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 1070 transitions. [2023-12-02 12:30:08,709 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 1070 transitions. Word has length 24 [2023-12-02 12:30:08,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:08,709 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 1070 transitions. [2023-12-02 12:30:08,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 15 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:08,709 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 1070 transitions. [2023-12-02 12:30:08,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-02 12:30:08,711 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:08,711 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:08,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 12:30:08,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-02 12:30:08,917 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:08,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:08,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1557001761, now seen corresponding path program 2 times [2023-12-02 12:30:08,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:30:08,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464673558] [2023-12-02 12:30:08,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:08,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:30:08,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:09,056 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:09,057 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:30:09,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464673558] [2023-12-02 12:30:09,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464673558] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:30:09,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231020254] [2023-12-02 12:30:09,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 12:30:09,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:30:09,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:30:09,059 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:30:09,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 12:30:09,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 12:30:09,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:30:09,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 12:30:09,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:09,214 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:09,214 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:30:09,346 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:09,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231020254] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:30:09,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1711475073] [2023-12-02 12:30:09,347 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-02 12:30:09,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 12:30:09,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2023-12-02 12:30:09,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106045350] [2023-12-02 12:30:09,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 12:30:09,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-02 12:30:09,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:30:09,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-02 12:30:09,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-12-02 12:30:09,351 INFO L87 Difference]: Start difference. First operand 409 states and 1070 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:09,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:09,818 INFO L93 Difference]: Finished difference Result 1201 states and 3038 transitions. [2023-12-02 12:30:09,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-02 12:30:09,819 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-12-02 12:30:09,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:09,827 INFO L225 Difference]: With dead ends: 1201 [2023-12-02 12:30:09,827 INFO L226 Difference]: Without dead ends: 1044 [2023-12-02 12:30:09,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=288, Invalid=834, Unknown=0, NotChecked=0, Total=1122 [2023-12-02 12:30:09,828 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 313 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:09,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 132 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 12:30:09,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2023-12-02 12:30:09,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 451. [2023-12-02 12:30:09,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 450 states have (on average 2.6622222222222223) internal successors, (1198), 450 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:09,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 1198 transitions. [2023-12-02 12:30:09,854 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 1198 transitions. Word has length 24 [2023-12-02 12:30:09,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:09,855 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 1198 transitions. [2023-12-02 12:30:09,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:09,855 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 1198 transitions. [2023-12-02 12:30:09,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-02 12:30:09,857 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:09,857 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:09,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-02 12:30:10,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-02 12:30:10,061 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:10,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:10,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1769471967, now seen corresponding path program 3 times [2023-12-02 12:30:10,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:30:10,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862523285] [2023-12-02 12:30:10,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:10,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:30:10,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:10,188 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:10,189 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:30:10,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862523285] [2023-12-02 12:30:10,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862523285] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:30:10,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188923103] [2023-12-02 12:30:10,190 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 12:30:10,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:30:10,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:30:10,191 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:30:10,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 12:30:10,298 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 12:30:10,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:30:10,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 12:30:10,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:10,353 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:10,353 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:30:10,506 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:10,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188923103] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:30:10,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [761702276] [2023-12-02 12:30:10,507 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-02 12:30:10,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 12:30:10,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-12-02 12:30:10,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584603659] [2023-12-02 12:30:10,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 12:30:10,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-02 12:30:10,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:30:10,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-02 12:30:10,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-12-02 12:30:10,509 INFO L87 Difference]: Start difference. First operand 451 states and 1198 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:11,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:11,032 INFO L93 Difference]: Finished difference Result 921 states and 2343 transitions. [2023-12-02 12:30:11,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-02 12:30:11,033 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-12-02 12:30:11,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:11,037 INFO L225 Difference]: With dead ends: 921 [2023-12-02 12:30:11,037 INFO L226 Difference]: Without dead ends: 688 [2023-12-02 12:30:11,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=415, Invalid=1067, Unknown=0, NotChecked=0, Total=1482 [2023-12-02 12:30:11,039 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 392 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:11,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 120 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 12:30:11,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2023-12-02 12:30:11,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 445. [2023-12-02 12:30:11,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 2.6666666666666665) internal successors, (1184), 444 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:11,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 1184 transitions. [2023-12-02 12:30:11,054 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 1184 transitions. Word has length 24 [2023-12-02 12:30:11,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:11,054 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 1184 transitions. [2023-12-02 12:30:11,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:11,055 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 1184 transitions. [2023-12-02 12:30:11,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-02 12:30:11,056 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:11,057 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:11,061 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 12:30:11,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-02 12:30:11,258 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:11,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:11,258 INFO L85 PathProgramCache]: Analyzing trace with hash -723856871, now seen corresponding path program 4 times [2023-12-02 12:30:11,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:30:11,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901267172] [2023-12-02 12:30:11,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:11,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:30:11,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:11,447 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:11,447 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:30:11,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901267172] [2023-12-02 12:30:11,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901267172] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:30:11,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096441077] [2023-12-02 12:30:11,448 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 12:30:11,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:30:11,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:30:11,449 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:30:11,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 12:30:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:11,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 12:30:11,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:11,634 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:11,634 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:30:11,806 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:11,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096441077] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:30:11,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1093534149] [2023-12-02 12:30:11,807 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-02 12:30:11,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 12:30:11,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 22 [2023-12-02 12:30:11,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216207119] [2023-12-02 12:30:11,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 12:30:11,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-02 12:30:11,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:30:11,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-02 12:30:11,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2023-12-02 12:30:11,809 INFO L87 Difference]: Start difference. First operand 445 states and 1184 transitions. Second operand has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:12,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:12,687 INFO L93 Difference]: Finished difference Result 1277 states and 3373 transitions. [2023-12-02 12:30:12,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-02 12:30:12,688 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-12-02 12:30:12,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:12,694 INFO L225 Difference]: With dead ends: 1277 [2023-12-02 12:30:12,694 INFO L226 Difference]: Without dead ends: 916 [2023-12-02 12:30:12,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1312 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1172, Invalid=2988, Unknown=0, NotChecked=0, Total=4160 [2023-12-02 12:30:12,697 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 683 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:12,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [683 Valid, 148 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 12:30:12,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2023-12-02 12:30:12,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 610. [2023-12-02 12:30:12,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 609 states have (on average 2.67816091954023) internal successors, (1631), 609 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:12,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 1631 transitions. [2023-12-02 12:30:12,719 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 1631 transitions. Word has length 36 [2023-12-02 12:30:12,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:12,720 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 1631 transitions. [2023-12-02 12:30:12,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:12,720 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 1631 transitions. [2023-12-02 12:30:12,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-02 12:30:12,722 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:12,722 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:12,728 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 12:30:12,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-02 12:30:12,923 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:12,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:12,923 INFO L85 PathProgramCache]: Analyzing trace with hash 109862820, now seen corresponding path program 5 times [2023-12-02 12:30:12,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:30:12,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210084362] [2023-12-02 12:30:12,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:12,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:30:12,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:13,295 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:13,295 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:30:13,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210084362] [2023-12-02 12:30:13,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210084362] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:30:13,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339130575] [2023-12-02 12:30:13,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 12:30:13,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:30:13,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:30:13,297 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:30:13,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 12:30:13,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-12-02 12:30:13,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:30:13,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-02 12:30:13,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:13,578 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:13,578 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:30:14,082 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:14,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339130575] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:30:14,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2044202475] [2023-12-02 12:30:14,083 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-02 12:30:14,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 12:30:14,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 35 [2023-12-02 12:30:14,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499107625] [2023-12-02 12:30:14,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 12:30:14,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-02 12:30:14,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:30:14,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-02 12:30:14,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=977, Unknown=0, NotChecked=0, Total=1260 [2023-12-02 12:30:14,086 INFO L87 Difference]: Start difference. First operand 610 states and 1631 transitions. Second operand has 36 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 35 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:15,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:15,147 INFO L93 Difference]: Finished difference Result 1414 states and 3507 transitions. [2023-12-02 12:30:15,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-02 12:30:15,148 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 35 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-12-02 12:30:15,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:15,155 INFO L225 Difference]: With dead ends: 1414 [2023-12-02 12:30:15,155 INFO L226 Difference]: Without dead ends: 1027 [2023-12-02 12:30:15,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1639 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1695, Invalid=4947, Unknown=0, NotChecked=0, Total=6642 [2023-12-02 12:30:15,158 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 790 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:15,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [790 Valid, 196 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 12:30:15,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2023-12-02 12:30:15,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 760. [2023-12-02 12:30:15,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 759 states have (on average 2.559947299077734) internal successors, (1943), 759 states have internal predecessors, (1943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:15,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1943 transitions. [2023-12-02 12:30:15,185 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1943 transitions. Word has length 54 [2023-12-02 12:30:15,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:15,185 INFO L495 AbstractCegarLoop]: Abstraction has 760 states and 1943 transitions. [2023-12-02 12:30:15,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 35 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:15,186 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1943 transitions. [2023-12-02 12:30:15,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-02 12:30:15,188 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:15,188 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:15,194 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 12:30:15,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-02 12:30:15,389 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:15,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:15,390 INFO L85 PathProgramCache]: Analyzing trace with hash -560147014, now seen corresponding path program 6 times [2023-12-02 12:30:15,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:30:15,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459506040] [2023-12-02 12:30:15,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:15,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:30:15,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:15,727 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:15,728 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:30:15,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459506040] [2023-12-02 12:30:15,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459506040] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:30:15,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413643562] [2023-12-02 12:30:15,728 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 12:30:15,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:30:15,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:30:15,730 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:30:15,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 12:30:15,810 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 12:30:15,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:30:15,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-02 12:30:15,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:15,939 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:15,939 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:30:16,371 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:16,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413643562] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:30:16,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [599245821] [2023-12-02 12:30:16,372 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-02 12:30:16,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 12:30:16,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 34 [2023-12-02 12:30:16,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663994587] [2023-12-02 12:30:16,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 12:30:16,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-02 12:30:16,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:30:16,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-02 12:30:16,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=923, Unknown=0, NotChecked=0, Total=1190 [2023-12-02 12:30:16,376 INFO L87 Difference]: Start difference. First operand 760 states and 1943 transitions. Second operand has 35 states, 35 states have (on average 3.0) internal successors, (105), 34 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:17,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:17,389 INFO L93 Difference]: Finished difference Result 2101 states and 4935 transitions. [2023-12-02 12:30:17,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-02 12:30:17,389 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.0) internal successors, (105), 34 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-12-02 12:30:17,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:17,399 INFO L225 Difference]: With dead ends: 2101 [2023-12-02 12:30:17,399 INFO L226 Difference]: Without dead ends: 1714 [2023-12-02 12:30:17,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1732 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1728, Invalid=5244, Unknown=0, NotChecked=0, Total=6972 [2023-12-02 12:30:17,401 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 751 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:17,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [751 Valid, 214 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 12:30:17,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1714 states. [2023-12-02 12:30:17,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1714 to 823. [2023-12-02 12:30:17,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 822 states have (on average 2.5827250608272507) internal successors, (2123), 822 states have internal predecessors, (2123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:17,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 2123 transitions. [2023-12-02 12:30:17,425 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 2123 transitions. Word has length 54 [2023-12-02 12:30:17,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:17,425 INFO L495 AbstractCegarLoop]: Abstraction has 823 states and 2123 transitions. [2023-12-02 12:30:17,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.0) internal successors, (105), 34 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:17,425 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 2123 transitions. [2023-12-02 12:30:17,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-02 12:30:17,427 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:17,427 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:17,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 12:30:17,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-02 12:30:17,628 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:17,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:17,629 INFO L85 PathProgramCache]: Analyzing trace with hash -829404230, now seen corresponding path program 7 times [2023-12-02 12:30:17,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:30:17,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969613152] [2023-12-02 12:30:17,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:17,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:30:17,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:17,928 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:17,928 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:30:17,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969613152] [2023-12-02 12:30:17,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969613152] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:30:17,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666492608] [2023-12-02 12:30:17,929 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 12:30:17,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:30:17,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:30:17,930 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:30:17,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 12:30:18,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:18,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-02 12:30:18,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:18,173 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:18,173 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:30:18,599 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:18,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666492608] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:30:18,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1427634588] [2023-12-02 12:30:18,600 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-02 12:30:18,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 12:30:18,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 35 [2023-12-02 12:30:18,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142680081] [2023-12-02 12:30:18,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 12:30:18,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-02 12:30:18,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:30:18,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-02 12:30:18,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1036, Unknown=0, NotChecked=0, Total=1260 [2023-12-02 12:30:18,603 INFO L87 Difference]: Start difference. First operand 823 states and 2123 transitions. Second operand has 36 states, 36 states have (on average 3.0) internal successors, (108), 35 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:19,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:19,987 INFO L93 Difference]: Finished difference Result 2206 states and 5235 transitions. [2023-12-02 12:30:19,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-02 12:30:19,988 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.0) internal successors, (108), 35 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-12-02 12:30:19,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:19,999 INFO L225 Difference]: With dead ends: 2206 [2023-12-02 12:30:19,999 INFO L226 Difference]: Without dead ends: 1813 [2023-12-02 12:30:20,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2180 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1892, Invalid=6298, Unknown=0, NotChecked=0, Total=8190 [2023-12-02 12:30:20,002 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 862 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:20,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 258 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 738 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 12:30:20,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1813 states. [2023-12-02 12:30:20,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1813 to 922. [2023-12-02 12:30:20,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 921 states have (on average 2.6178067318132463) internal successors, (2411), 921 states have internal predecessors, (2411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:20,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 2411 transitions. [2023-12-02 12:30:20,038 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 2411 transitions. Word has length 54 [2023-12-02 12:30:20,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:20,038 INFO L495 AbstractCegarLoop]: Abstraction has 922 states and 2411 transitions. [2023-12-02 12:30:20,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.0) internal successors, (108), 35 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:20,038 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 2411 transitions. [2023-12-02 12:30:20,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-02 12:30:20,040 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:20,040 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:20,046 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 12:30:20,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:30:20,241 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:20,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:20,241 INFO L85 PathProgramCache]: Analyzing trace with hash 770393410, now seen corresponding path program 8 times [2023-12-02 12:30:20,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:30:20,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286439558] [2023-12-02 12:30:20,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:20,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:30:20,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:20,538 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:20,538 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:30:20,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286439558] [2023-12-02 12:30:20,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286439558] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:30:20,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094769090] [2023-12-02 12:30:20,538 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 12:30:20,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:30:20,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:30:20,539 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:30:20,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 12:30:20,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-12-02 12:30:20,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:30:20,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-02 12:30:20,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:20,754 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:20,754 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:30:21,115 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:21,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094769090] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:30:21,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1757495613] [2023-12-02 12:30:21,116 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-02 12:30:21,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 12:30:21,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 34 [2023-12-02 12:30:21,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487236213] [2023-12-02 12:30:21,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 12:30:21,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-02 12:30:21,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:30:21,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-02 12:30:21,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=971, Unknown=0, NotChecked=0, Total=1190 [2023-12-02 12:30:21,120 INFO L87 Difference]: Start difference. First operand 922 states and 2411 transitions. Second operand has 35 states, 35 states have (on average 3.0285714285714285) internal successors, (106), 34 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:22,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:22,579 INFO L93 Difference]: Finished difference Result 2819 states and 7115 transitions. [2023-12-02 12:30:22,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-12-02 12:30:22,579 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.0285714285714285) internal successors, (106), 34 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-12-02 12:30:22,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:22,590 INFO L225 Difference]: With dead ends: 2819 [2023-12-02 12:30:22,590 INFO L226 Difference]: Without dead ends: 2336 [2023-12-02 12:30:22,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3071 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2384, Invalid=7516, Unknown=0, NotChecked=0, Total=9900 [2023-12-02 12:30:22,594 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 1158 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:22,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1158 Valid, 229 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 12:30:22,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2336 states. [2023-12-02 12:30:22,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2336 to 868. [2023-12-02 12:30:22,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 867 states have (on average 2.6239907727797003) internal successors, (2275), 867 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:22,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 2275 transitions. [2023-12-02 12:30:22,629 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 2275 transitions. Word has length 54 [2023-12-02 12:30:22,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:22,630 INFO L495 AbstractCegarLoop]: Abstraction has 868 states and 2275 transitions. [2023-12-02 12:30:22,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.0285714285714285) internal successors, (106), 34 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:22,630 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 2275 transitions. [2023-12-02 12:30:22,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-02 12:30:22,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:22,633 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:22,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-02 12:30:22,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:30:22,834 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:22,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:22,834 INFO L85 PathProgramCache]: Analyzing trace with hash -291118562, now seen corresponding path program 9 times [2023-12-02 12:30:22,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:30:22,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481971399] [2023-12-02 12:30:22,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:22,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:30:22,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:23,255 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:23,255 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:30:23,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481971399] [2023-12-02 12:30:23,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481971399] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:30:23,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684472421] [2023-12-02 12:30:23,256 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 12:30:23,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:30:23,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:30:23,257 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:30:23,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 12:30:23,333 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 12:30:23,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:30:23,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-02 12:30:23,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:23,427 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:23,428 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:30:23,859 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:23,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684472421] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:30:23,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2036743081] [2023-12-02 12:30:23,860 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-02 12:30:23,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 12:30:23,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 45 [2023-12-02 12:30:23,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441307644] [2023-12-02 12:30:23,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 12:30:23,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-02 12:30:23,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:30:23,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-02 12:30:23,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=474, Invalid=1596, Unknown=0, NotChecked=0, Total=2070 [2023-12-02 12:30:23,863 INFO L87 Difference]: Start difference. First operand 868 states and 2275 transitions. Second operand has 46 states, 46 states have (on average 2.9782608695652173) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:26,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:26,433 INFO L93 Difference]: Finished difference Result 3205 states and 8263 transitions. [2023-12-02 12:30:26,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2023-12-02 12:30:26,433 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.9782608695652173) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-12-02 12:30:26,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:26,444 INFO L225 Difference]: With dead ends: 3205 [2023-12-02 12:30:26,445 INFO L226 Difference]: Without dead ends: 2365 [2023-12-02 12:30:26,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7655 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=5748, Invalid=15714, Unknown=0, NotChecked=0, Total=21462 [2023-12-02 12:30:26,449 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 1868 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1868 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:26,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1868 Valid, 309 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 12:30:26,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2023-12-02 12:30:26,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 1240. [2023-12-02 12:30:26,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1239 states have (on average 2.665052461662631) internal successors, (3302), 1239 states have internal predecessors, (3302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:26,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 3302 transitions. [2023-12-02 12:30:26,475 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 3302 transitions. Word has length 69 [2023-12-02 12:30:26,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:26,475 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 3302 transitions. [2023-12-02 12:30:26,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.9782608695652173) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:26,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 3302 transitions. [2023-12-02 12:30:26,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-02 12:30:26,479 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:26,479 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 18, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:26,484 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-02 12:30:26,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-12-02 12:30:26,682 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:26,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:26,682 INFO L85 PathProgramCache]: Analyzing trace with hash -974284894, now seen corresponding path program 10 times [2023-12-02 12:30:26,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:30:26,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499394665] [2023-12-02 12:30:26,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:26,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:30:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:27,619 INFO L134 CoverageAnalysis]: Checked inductivity of 937 backedges. 0 proven. 937 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:27,620 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:30:27,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499394665] [2023-12-02 12:30:27,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499394665] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:30:27,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791892210] [2023-12-02 12:30:27,620 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 12:30:27,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:30:27,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:30:27,621 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:30:27,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 12:30:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:27,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-02 12:30:27,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:27,856 INFO L134 CoverageAnalysis]: Checked inductivity of 937 backedges. 0 proven. 937 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:27,856 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:30:28,435 INFO L134 CoverageAnalysis]: Checked inductivity of 937 backedges. 0 proven. 937 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:28,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791892210] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:30:28,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1325013610] [2023-12-02 12:30:28,436 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-02 12:30:28,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 12:30:28,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 46 [2023-12-02 12:30:28,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73395897] [2023-12-02 12:30:28,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 12:30:28,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-02 12:30:28,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:30:28,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-02 12:30:28,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=1699, Unknown=0, NotChecked=0, Total=2162 [2023-12-02 12:30:28,439 INFO L87 Difference]: Start difference. First operand 1240 states and 3302 transitions. Second operand has 47 states, 47 states have (on average 3.0425531914893615) internal successors, (143), 46 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:30,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:30,783 INFO L93 Difference]: Finished difference Result 2429 states and 6469 transitions. [2023-12-02 12:30:30,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-12-02 12:30:30,784 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.0425531914893615) internal successors, (143), 46 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2023-12-02 12:30:30,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:30,799 INFO L225 Difference]: With dead ends: 2429 [2023-12-02 12:30:30,799 INFO L226 Difference]: Without dead ends: 2302 [2023-12-02 12:30:30,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 205 SyntacticMatches, 35 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5459 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=4701, Invalid=11301, Unknown=0, NotChecked=0, Total=16002 [2023-12-02 12:30:30,801 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 2070 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2070 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:30,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2070 Valid, 211 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 12:30:30,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2302 states. [2023-12-02 12:30:30,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2302 to 1936. [2023-12-02 12:30:30,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1936 states, 1935 states have (on average 2.788630490956072) internal successors, (5396), 1935 states have internal predecessors, (5396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:30,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1936 states to 1936 states and 5396 transitions. [2023-12-02 12:30:30,836 INFO L78 Accepts]: Start accepts. Automaton has 1936 states and 5396 transitions. Word has length 123 [2023-12-02 12:30:30,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:30,836 INFO L495 AbstractCegarLoop]: Abstraction has 1936 states and 5396 transitions. [2023-12-02 12:30:30,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.0425531914893615) internal successors, (143), 46 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:30,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1936 states and 5396 transitions. [2023-12-02 12:30:30,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-02 12:30:30,839 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:30,839 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:30,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 12:30:31,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-12-02 12:30:31,040 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:31,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:31,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1456605687, now seen corresponding path program 11 times [2023-12-02 12:30:31,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:30:31,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829763779] [2023-12-02 12:30:31,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:31,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:30:31,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:31,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 1102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:31,957 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:30:31,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829763779] [2023-12-02 12:30:31,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829763779] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:30:31,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687368658] [2023-12-02 12:30:31,957 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 12:30:31,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:30:31,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:30:31,958 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:30:31,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-02 12:30:32,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2023-12-02 12:30:32,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:30:32,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-02 12:30:32,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:32,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 1102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:32,246 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:30:32,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 1102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:32,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687368658] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:30:32,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1054660497] [2023-12-02 12:30:32,831 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-02 12:30:32,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 12:30:32,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 48 [2023-12-02 12:30:32,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424793811] [2023-12-02 12:30:32,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 12:30:32,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-02 12:30:32,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:30:32,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-02 12:30:32,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=522, Invalid=1830, Unknown=0, NotChecked=0, Total=2352 [2023-12-02 12:30:32,834 INFO L87 Difference]: Start difference. First operand 1936 states and 5396 transitions. Second operand has 49 states, 49 states have (on average 3.1020408163265305) internal successors, (152), 48 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:35,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:35,169 INFO L93 Difference]: Finished difference Result 2501 states and 6670 transitions. [2023-12-02 12:30:35,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2023-12-02 12:30:35,169 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.1020408163265305) internal successors, (152), 48 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2023-12-02 12:30:35,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:35,177 INFO L225 Difference]: With dead ends: 2501 [2023-12-02 12:30:35,177 INFO L226 Difference]: Without dead ends: 2374 [2023-12-02 12:30:35,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 221 SyntacticMatches, 38 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6402 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=4845, Invalid=13787, Unknown=0, NotChecked=0, Total=18632 [2023-12-02 12:30:35,180 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 2144 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2144 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 1103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:35,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2144 Valid, 369 Invalid, 1103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1001 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 12:30:35,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2374 states. [2023-12-02 12:30:35,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2374 to 1312. [2023-12-02 12:30:35,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1312 states, 1311 states have (on average 2.672006102212052) internal successors, (3503), 1311 states have internal predecessors, (3503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:35,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 3503 transitions. [2023-12-02 12:30:35,216 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 3503 transitions. Word has length 132 [2023-12-02 12:30:35,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:35,217 INFO L495 AbstractCegarLoop]: Abstraction has 1312 states and 3503 transitions. [2023-12-02 12:30:35,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.1020408163265305) internal successors, (152), 48 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:35,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 3503 transitions. [2023-12-02 12:30:35,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-02 12:30:35,220 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:35,220 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:35,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-02 12:30:35,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-02 12:30:35,426 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:35,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:35,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1597230921, now seen corresponding path program 12 times [2023-12-02 12:30:35,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:30:35,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463150789] [2023-12-02 12:30:35,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:35,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:30:35,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 12:30:35,458 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 12:30:35,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 12:30:35,533 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 12:30:35,533 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 12:30:35,534 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2023-12-02 12:30:35,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2023-12-02 12:30:35,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2023-12-02 12:30:35,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2023-12-02 12:30:35,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2023-12-02 12:30:35,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2023-12-02 12:30:35,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-12-02 12:30:35,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-12-02 12:30:35,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-02 12:30:35,541 INFO L445 BasicCegarLoop]: Path program histogram: [12, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:35,545 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-02 12:30:35,545 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 12:30:35,614 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated [2023-12-02 12:30:35,615 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre7 could not be translated [2023-12-02 12:30:35,649 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:30:35 BasicIcfg [2023-12-02 12:30:35,649 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 12:30:35,650 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 12:30:35,650 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 12:30:35,650 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 12:30:35,650 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:30:03" (3/4) ... [2023-12-02 12:30:35,652 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 12:30:35,653 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 12:30:35,654 INFO L158 Benchmark]: Toolchain (without parser) took 33306.29ms. Allocated memory was 167.8MB in the beginning and 293.6MB in the end (delta: 125.8MB). Free memory was 134.1MB in the beginning and 114.3MB in the end (delta: 19.7MB). Peak memory consumption was 146.7MB. Max. memory is 16.1GB. [2023-12-02 12:30:35,654 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 121.6MB. Free memory is still 94.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 12:30:35,654 INFO L158 Benchmark]: CACSL2BoogieTranslator took 432.98ms. Allocated memory is still 167.8MB. Free memory was 134.1MB in the beginning and 114.3MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-12-02 12:30:35,655 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.72ms. Allocated memory is still 167.8MB. Free memory was 114.3MB in the beginning and 112.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 12:30:35,655 INFO L158 Benchmark]: Boogie Preprocessor took 26.50ms. Allocated memory is still 167.8MB. Free memory was 112.2MB in the beginning and 111.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 12:30:35,656 INFO L158 Benchmark]: RCFGBuilder took 407.19ms. Allocated memory is still 167.8MB. Free memory was 110.6MB in the beginning and 90.2MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 12:30:35,656 INFO L158 Benchmark]: TraceAbstraction took 32391.59ms. Allocated memory was 167.8MB in the beginning and 293.6MB in the end (delta: 125.8MB). Free memory was 89.6MB in the beginning and 114.3MB in the end (delta: -24.7MB). Peak memory consumption was 102.7MB. Max. memory is 16.1GB. [2023-12-02 12:30:35,656 INFO L158 Benchmark]: Witness Printer took 3.69ms. Allocated memory is still 293.6MB. Free memory is still 114.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 12:30:35,658 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 121.6MB. Free memory is still 94.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 432.98ms. Allocated memory is still 167.8MB. Free memory was 134.1MB in the beginning and 114.3MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.72ms. Allocated memory is still 167.8MB. Free memory was 114.3MB in the beginning and 112.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.50ms. Allocated memory is still 167.8MB. Free memory was 112.2MB in the beginning and 111.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 407.19ms. Allocated memory is still 167.8MB. Free memory was 110.6MB in the beginning and 90.2MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 32391.59ms. Allocated memory was 167.8MB in the beginning and 293.6MB in the end (delta: 125.8MB). Free memory was 89.6MB in the beginning and 114.3MB in the end (delta: -24.7MB). Peak memory consumption was 102.7MB. Max. memory is 16.1GB. * Witness Printer took 3.69ms. Allocated memory is still 293.6MB. Free memory is still 114.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre7 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 693]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 693. Possible FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(argc)=49, arg={0:0}, argc=49, argv={50:51}, i=3, id1={5:0}, id2={3:0}, j=6] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(argc)=49, arg={0:0}, arg={0:0}, argc=49, argv={50:51}, i=3, id1={5:0}, id2={3:0}, j=6] [L704] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L716] 0 int condI = i >= (2*20 +6); VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={50:51}, condI=0, i=3, id1={5:0}, id2={3:0}, j=6, k=0] [L696] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=0] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=0, k=0] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=0, k=1] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=0, k=1] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=1] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=1, k=1] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=1, k=2] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=1, k=2] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=2] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=2, k=2] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=2, k=3] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=2, k=3] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=3] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=3, k=3] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=3, k=4] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=3, k=4] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=4] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=5] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=5] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=5] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=5, k=5] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=5, k=6] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=5, k=6] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=6] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=6, k=6] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=6, k=7] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=6, k=7] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=7] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=7, k=7] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=7, k=8] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=7, k=8] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=8] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=8, k=8] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=8, k=9] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=8, k=9] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=9, k=9] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=9, k=9] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=9] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=9] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=26, k=10, k=10] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=28, k=10, k=10] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=28, k=10, k=11] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=28, k=10, k=11] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=28, k=11, k=11] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=28, k=11, k=11] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=28, k=11, k=11] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=30, k=11, k=11] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=30, k=11, k=12] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=30, k=11, k=12] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=30, k=12, k=12] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=30, k=12, k=12] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=30, k=12, k=12] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=32, k=12, k=12] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=32, k=12, k=13] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=32, k=12, k=13] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=32, k=13, k=13] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=32, k=13, k=13] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=32, k=13, k=13] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=34, k=13, k=13] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=34, k=13, k=14] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=34, k=13, k=14] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=34, k=14, k=14] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=34, k=14, k=14] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=34, k=14, k=14] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=36, k=14, k=14] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=36, k=14, k=15] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=36, k=14, k=15] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=36, k=15, k=15] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=36, k=15, k=15] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=36, k=15, k=15] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=38, k=15, k=15] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=38, k=15, k=16] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=38, k=15, k=16] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=38, k=16, k=16] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=38, k=16, k=16] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=38, k=16, k=16] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=40, k=16, k=16] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=40, k=16, k=17] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=40, k=16, k=17] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=40, k=17, k=17] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=40, k=17, k=17] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=40, k=17, k=17] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=42, k=17, k=17] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=42, k=17, k=18] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=42, k=17, k=18] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=42, k=18, k=18] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=42, k=18, k=18] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=42, k=18, k=18] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=44, k=18, k=18] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=44, k=18, k=19] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=44, k=18, k=19] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=44, k=19, k=19] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=44, k=19, k=19] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=44, k=19, k=19] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=46, k=19, k=19] [L719] 0 int condJ = j >= (2*20 +6); VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={50:51}, condI=0, condJ=1, i=45, id1={5:0}, id2={3:0}, j=46, k=19, k=19] [L721] COND TRUE 0 condI || condJ [L722] CALL 0 reach_error() [L693] COND FALSE 0 !(0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=46, k=19, k=19] [L693] 0 __assert_fail ("0", "triangular-longest-2.c", 8, __extension__ __PRETTY_FUNCTION__) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=46, k=19, k=19] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 711]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 44 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 32.2s, OverallIterations: 24, TraceHistogramMax: 20, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 16.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12042 SdHoareTripleChecker+Valid, 5.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12042 mSDsluCounter, 2820 SdHoareTripleChecker+Invalid, 4.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2527 mSDsCounter, 662 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7925 IncrementalHoareTripleChecker+Invalid, 8587 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 662 mSolverCounterUnsat, 293 mSDtfsCounter, 7925 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2206 GetRequests, 1126 SyntacticMatches, 73 SemanticMatches, 1007 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30484 ImplicationChecksByTransitivity, 14.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1936occurred in iteration=22, InterpolantAutomatonStates: 741, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 23 MinimizatonAttempts, 7976 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 10.9s InterpolantComputationTime, 1592 NumberOfCodeBlocks, 1592 NumberOfCodeBlocksAsserted, 71 NumberOfCheckSat, 2082 ConstructedInterpolants, 0 QuantifiedInterpolants, 8712 SizeOfPredicates, 189 NumberOfNonLiveVariables, 2195 ConjunctsInSsa, 255 ConjunctsInUnsatCore, 47 InterpolantComputations, 11 PerfectInterpolantSequences, 1/8295 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-12-02 12:30:35,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/triangular-longest-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 12:30:37,483 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 12:30:37,559 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-12-02 12:30:37,565 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 12:30:37,566 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 12:30:37,596 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 12:30:37,597 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 12:30:37,597 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 12:30:37,598 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 12:30:37,599 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 12:30:37,599 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 12:30:37,600 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 12:30:37,600 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 12:30:37,601 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 12:30:37,602 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 12:30:37,602 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 12:30:37,603 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 12:30:37,604 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 12:30:37,604 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 12:30:37,605 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 12:30:37,605 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 12:30:37,606 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 12:30:37,606 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 12:30:37,607 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 12:30:37,607 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 12:30:37,608 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 12:30:37,608 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 12:30:37,609 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 12:30:37,609 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 12:30:37,610 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 12:30:37,610 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 12:30:37,610 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 12:30:37,611 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 12:30:37,611 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 12:30:37,611 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 12:30:37,612 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 12:30:37,612 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 12:30:37,612 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:30:37,613 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 12:30:37,613 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 12:30:37,613 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 12:30:37,613 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 12:30:37,614 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 12:30:37,614 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 12:30:37,614 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 12:30:37,614 INFO L153 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 [2023-12-02 12:30:37,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 12:30:37,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 12:30:37,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 12:30:37,943 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 12:30:37,944 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 12:30:37,945 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/pthread/triangular-longest-2.i [2023-12-02 12:30:40,735 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 12:30:40,975 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 12:30:40,976 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/sv-benchmarks/c/pthread/triangular-longest-2.i [2023-12-02 12:30:40,990 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/data/263e19172/7e25122534bd45139f5f27b4cd53c6ec/FLAG7f354d1fa [2023-12-02 12:30:41,005 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/data/263e19172/7e25122534bd45139f5f27b4cd53c6ec [2023-12-02 12:30:41,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 12:30:41,009 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 12:30:41,010 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 12:30:41,010 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 12:30:41,014 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 12:30:41,015 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:30:41" (1/1) ... [2023-12-02 12:30:41,016 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bae5ecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:30:41, skipping insertion in model container [2023-12-02 12:30:41,016 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:30:41" (1/1) ... [2023-12-02 12:30:41,064 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 12:30:41,372 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:30:41,386 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 12:30:41,426 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:30:41,462 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:30:41,462 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:30:41,469 INFO L206 MainTranslator]: Completed translation [2023-12-02 12:30:41,470 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:30:41 WrapperNode [2023-12-02 12:30:41,470 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 12:30:41,471 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 12:30:41,471 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 12:30:41,472 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 12:30:41,486 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:30:41" (1/1) ... [2023-12-02 12:30:41,503 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:30:41" (1/1) ... [2023-12-02 12:30:41,523 INFO L138 Inliner]: procedures = 172, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 49 [2023-12-02 12:30:41,524 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 12:30:41,524 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 12:30:41,524 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 12:30:41,525 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 12:30:41,533 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:30:41" (1/1) ... [2023-12-02 12:30:41,533 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:30:41" (1/1) ... [2023-12-02 12:30:41,536 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:30:41" (1/1) ... [2023-12-02 12:30:41,537 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:30:41" (1/1) ... [2023-12-02 12:30:41,544 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:30:41" (1/1) ... [2023-12-02 12:30:41,547 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:30:41" (1/1) ... [2023-12-02 12:30:41,549 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:30:41" (1/1) ... [2023-12-02 12:30:41,551 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:30:41" (1/1) ... [2023-12-02 12:30:41,555 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 12:30:41,556 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 12:30:41,556 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 12:30:41,556 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 12:30:41,557 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:30:41" (1/1) ... [2023-12-02 12:30:41,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:30:41,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:30:41,585 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 12:30:41,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 12:30:41,634 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-12-02 12:30:41,634 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-12-02 12:30:41,634 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-12-02 12:30:41,634 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-12-02 12:30:41,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-02 12:30:41,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 12:30:41,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 12:30:41,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 12:30:41,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 12:30:41,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 12:30:41,636 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-02 12:30:41,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 12:30:41,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 12:30:41,637 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-02 12:30:41,769 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 12:30:41,771 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 12:30:41,947 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 12:30:42,048 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 12:30:42,049 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 12:30:42,049 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:30:42 BoogieIcfgContainer [2023-12-02 12:30:42,049 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 12:30:42,052 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 12:30:42,052 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 12:30:42,055 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 12:30:42,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:30:41" (1/3) ... [2023-12-02 12:30:42,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6483a65f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:30:42, skipping insertion in model container [2023-12-02 12:30:42,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:30:41" (2/3) ... [2023-12-02 12:30:42,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6483a65f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:30:42, skipping insertion in model container [2023-12-02 12:30:42,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:30:42" (3/3) ... [2023-12-02 12:30:42,058 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-2.i [2023-12-02 12:30:42,076 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 12:30:42,076 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-12-02 12:30:42,076 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-02 12:30:42,117 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-02 12:30:42,144 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 35 transitions, 78 flow [2023-12-02 12:30:42,189 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 305 states, 299 states have (on average 3.0267558528428093) internal successors, (905), 304 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:42,228 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 12:30:42,235 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@72c92c19, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 12:30:42,235 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-12-02 12:30:42,238 INFO L276 IsEmpty]: Start isEmpty. Operand has 305 states, 299 states have (on average 3.0267558528428093) internal successors, (905), 304 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:42,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-12-02 12:30:42,244 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:42,245 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-12-02 12:30:42,245 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:42,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:42,250 INFO L85 PathProgramCache]: Analyzing trace with hash 6801, now seen corresponding path program 1 times [2023-12-02 12:30:42,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:30:42,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1795283974] [2023-12-02 12:30:42,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:42,263 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:42,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:30:42,264 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:30:42,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-02 12:30:42,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:42,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 12:30:42,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:42,427 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-12-02 12:30:42,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2023-12-02 12:30:42,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:42,453 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:30:42,454 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:30:42,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1795283974] [2023-12-02 12:30:42,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1795283974] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:42,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:42,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 12:30:42,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061607729] [2023-12-02 12:30:42,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:42,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:30:42,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:30:42,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:30:42,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:30:42,492 INFO L87 Difference]: Start difference. First operand has 305 states, 299 states have (on average 3.0267558528428093) internal successors, (905), 304 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:42,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:42,597 INFO L93 Difference]: Finished difference Result 279 states and 779 transitions. [2023-12-02 12:30:42,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:30:42,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-12-02 12:30:42,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:42,613 INFO L225 Difference]: With dead ends: 279 [2023-12-02 12:30:42,613 INFO L226 Difference]: Without dead ends: 279 [2023-12-02 12:30:42,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:30:42,618 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 25 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:42,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 15 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 12:30:42,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2023-12-02 12:30:42,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2023-12-02 12:30:42,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 274 states have (on average 2.843065693430657) internal successors, (779), 278 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:42,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 779 transitions. [2023-12-02 12:30:42,685 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 779 transitions. Word has length 2 [2023-12-02 12:30:42,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:42,686 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 779 transitions. [2023-12-02 12:30:42,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:42,686 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 779 transitions. [2023-12-02 12:30:42,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-12-02 12:30:42,687 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:42,687 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-12-02 12:30:42,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-02 12:30:42,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:42,891 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:42,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:42,892 INFO L85 PathProgramCache]: Analyzing trace with hash 6802, now seen corresponding path program 1 times [2023-12-02 12:30:42,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:30:42,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480167507] [2023-12-02 12:30:42,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:42,893 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:42,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:30:42,894 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:30:42,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-02 12:30:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:42,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 12:30:42,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:42,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 12:30:42,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-12-02 12:30:42,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-12-02 12:30:42,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:42,992 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:30:42,992 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:30:42,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1480167507] [2023-12-02 12:30:42,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1480167507] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:42,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:42,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 12:30:42,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701739750] [2023-12-02 12:30:42,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:42,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:30:42,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:30:42,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:30:42,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:30:42,995 INFO L87 Difference]: Start difference. First operand 279 states and 779 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:43,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:43,073 INFO L93 Difference]: Finished difference Result 278 states and 778 transitions. [2023-12-02 12:30:43,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:30:43,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-12-02 12:30:43,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:43,078 INFO L225 Difference]: With dead ends: 278 [2023-12-02 12:30:43,078 INFO L226 Difference]: Without dead ends: 278 [2023-12-02 12:30:43,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:30:43,080 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 24 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:43,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 16 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 12:30:43,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2023-12-02 12:30:43,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2023-12-02 12:30:43,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 274 states have (on average 2.8394160583941606) internal successors, (778), 277 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:43,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 778 transitions. [2023-12-02 12:30:43,106 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 778 transitions. Word has length 2 [2023-12-02 12:30:43,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:43,107 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 778 transitions. [2023-12-02 12:30:43,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:43,107 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 778 transitions. [2023-12-02 12:30:43,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 12:30:43,108 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:43,108 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 12:30:43,110 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-02 12:30:43,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:43,310 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:43,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:43,311 INFO L85 PathProgramCache]: Analyzing trace with hash 202776936, now seen corresponding path program 1 times [2023-12-02 12:30:43,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:30:43,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [607755593] [2023-12-02 12:30:43,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:43,312 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:43,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:30:43,313 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:30:43,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-02 12:30:43,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:43,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 12:30:43,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:43,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 12:30:43,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 12:30:43,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 12:30:43,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:43,420 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:30:43,420 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:30:43,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [607755593] [2023-12-02 12:30:43,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [607755593] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:43,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:43,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 12:30:43,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12007301] [2023-12-02 12:30:43,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:43,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:30:43,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:30:43,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:30:43,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:30:43,423 INFO L87 Difference]: Start difference. First operand 278 states and 778 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:43,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:43,479 INFO L93 Difference]: Finished difference Result 273 states and 768 transitions. [2023-12-02 12:30:43,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:30:43,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-12-02 12:30:43,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:43,482 INFO L225 Difference]: With dead ends: 273 [2023-12-02 12:30:43,482 INFO L226 Difference]: Without dead ends: 273 [2023-12-02 12:30:43,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:30:43,484 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 20 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:43,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 14 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 12:30:43,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-12-02 12:30:43,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2023-12-02 12:30:43,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 270 states have (on average 2.8444444444444446) internal successors, (768), 272 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:43,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 768 transitions. [2023-12-02 12:30:43,502 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 768 transitions. Word has length 5 [2023-12-02 12:30:43,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:43,503 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 768 transitions. [2023-12-02 12:30:43,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:43,503 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 768 transitions. [2023-12-02 12:30:43,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 12:30:43,504 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:43,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 12:30:43,508 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-02 12:30:43,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:43,707 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:43,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:43,707 INFO L85 PathProgramCache]: Analyzing trace with hash 202776937, now seen corresponding path program 1 times [2023-12-02 12:30:43,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:30:43,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1076629491] [2023-12-02 12:30:43,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:43,708 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:43,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:30:43,708 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:30:43,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-02 12:30:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:43,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 12:30:43,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:43,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 12:30:43,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 12:30:43,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 12:30:43,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:43,816 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:30:43,817 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:30:43,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1076629491] [2023-12-02 12:30:43,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1076629491] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:43,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:43,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 12:30:43,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345864243] [2023-12-02 12:30:43,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:43,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:30:43,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:30:43,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:30:43,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:30:43,819 INFO L87 Difference]: Start difference. First operand 273 states and 768 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:43,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:43,870 INFO L93 Difference]: Finished difference Result 268 states and 758 transitions. [2023-12-02 12:30:43,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:30:43,870 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-12-02 12:30:43,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:43,873 INFO L225 Difference]: With dead ends: 268 [2023-12-02 12:30:43,874 INFO L226 Difference]: Without dead ends: 268 [2023-12-02 12:30:43,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:30:43,875 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 19 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:43,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 15 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 12:30:43,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2023-12-02 12:30:43,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2023-12-02 12:30:43,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 266 states have (on average 2.8496240601503757) internal successors, (758), 267 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:43,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 758 transitions. [2023-12-02 12:30:43,902 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 758 transitions. Word has length 5 [2023-12-02 12:30:43,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:43,902 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 758 transitions. [2023-12-02 12:30:43,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:43,902 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 758 transitions. [2023-12-02 12:30:43,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 12:30:43,905 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:43,905 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:43,907 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-02 12:30:44,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:44,108 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:44,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:44,109 INFO L85 PathProgramCache]: Analyzing trace with hash 665434620, now seen corresponding path program 1 times [2023-12-02 12:30:44,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:30:44,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [37463002] [2023-12-02 12:30:44,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:44,109 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:44,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:30:44,110 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:30:44,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-02 12:30:44,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:44,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:30:44,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:44,364 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_35| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_43| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_43|) (_ bv0 1)) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_43| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_35|)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_43| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_35| (_ bv0 1))))) is different from true [2023-12-02 12:30:44,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:44,365 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:30:44,365 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:30:44,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [37463002] [2023-12-02 12:30:44,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [37463002] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:44,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:44,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:30:44,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821662434] [2023-12-02 12:30:44,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:44,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:30:44,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:30:44,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:30:44,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:44,368 INFO L87 Difference]: Start difference. First operand 268 states and 758 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:44,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:44,433 INFO L93 Difference]: Finished difference Result 291 states and 803 transitions. [2023-12-02 12:30:44,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:30:44,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-12-02 12:30:44,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:44,436 INFO L225 Difference]: With dead ends: 291 [2023-12-02 12:30:44,436 INFO L226 Difference]: Without dead ends: 289 [2023-12-02 12:30:44,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:44,437 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:44,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 18 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 60 Unchecked, 0.1s Time] [2023-12-02 12:30:44,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-12-02 12:30:44,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2023-12-02 12:30:44,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 287 states have (on average 2.78397212543554) internal successors, (799), 288 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:44,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 799 transitions. [2023-12-02 12:30:44,447 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 799 transitions. Word has length 12 [2023-12-02 12:30:44,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:44,448 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 799 transitions. [2023-12-02 12:30:44,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:44,448 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 799 transitions. [2023-12-02 12:30:44,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 12:30:44,450 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:44,451 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:44,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-02 12:30:44,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:44,652 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:44,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:44,652 INFO L85 PathProgramCache]: Analyzing trace with hash 665435715, now seen corresponding path program 1 times [2023-12-02 12:30:44,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:30:44,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [658766073] [2023-12-02 12:30:44,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:44,653 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:44,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:30:44,654 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:30:44,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-02 12:30:44,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:44,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 12:30:44,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:44,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:44,801 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:30:44,802 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:30:44,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [658766073] [2023-12-02 12:30:44,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [658766073] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:44,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:44,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 12:30:44,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090372106] [2023-12-02 12:30:44,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:44,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 12:30:44,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:30:44,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 12:30:44,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 12:30:44,803 INFO L87 Difference]: Start difference. First operand 289 states and 799 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:45,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:45,010 INFO L93 Difference]: Finished difference Result 527 states and 1445 transitions. [2023-12-02 12:30:45,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 12:30:45,011 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-12-02 12:30:45,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:45,015 INFO L225 Difference]: With dead ends: 527 [2023-12-02 12:30:45,015 INFO L226 Difference]: Without dead ends: 520 [2023-12-02 12:30:45,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 12:30:45,016 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 59 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:45,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 42 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 12:30:45,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2023-12-02 12:30:45,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 364. [2023-12-02 12:30:45,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 362 states have (on average 2.803867403314917) internal successors, (1015), 363 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:45,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 1015 transitions. [2023-12-02 12:30:45,035 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 1015 transitions. Word has length 12 [2023-12-02 12:30:45,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:45,035 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 1015 transitions. [2023-12-02 12:30:45,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:45,035 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 1015 transitions. [2023-12-02 12:30:45,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-02 12:30:45,037 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:45,038 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:45,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-02 12:30:45,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:45,241 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:45,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:45,241 INFO L85 PathProgramCache]: Analyzing trace with hash -846362676, now seen corresponding path program 1 times [2023-12-02 12:30:45,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:30:45,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2006603187] [2023-12-02 12:30:45,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:45,241 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:45,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:30:45,242 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:30:45,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-02 12:30:45,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:45,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:30:45,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:45,478 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_36| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_44| (_ BitVec 32))) (and (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_44| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_36| (_ bv0 1))) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_44| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_36|)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_44|) (_ bv0 1)))) is different from true [2023-12-02 12:30:45,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:45,492 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:30:45,492 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:30:45,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2006603187] [2023-12-02 12:30:45,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2006603187] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:45,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:45,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:30:45,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123908805] [2023-12-02 12:30:45,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:45,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:30:45,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:30:45,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:30:45,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:45,494 INFO L87 Difference]: Start difference. First operand 364 states and 1015 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:45,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:45,555 INFO L93 Difference]: Finished difference Result 369 states and 1030 transitions. [2023-12-02 12:30:45,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:30:45,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-02 12:30:45,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:45,558 INFO L225 Difference]: With dead ends: 369 [2023-12-02 12:30:45,558 INFO L226 Difference]: Without dead ends: 369 [2023-12-02 12:30:45,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:45,559 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:45,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 18 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 59 Unchecked, 0.1s Time] [2023-12-02 12:30:45,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2023-12-02 12:30:45,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 364. [2023-12-02 12:30:45,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 362 states have (on average 2.803867403314917) internal successors, (1015), 363 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:45,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 1015 transitions. [2023-12-02 12:30:45,570 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 1015 transitions. Word has length 13 [2023-12-02 12:30:45,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:45,571 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 1015 transitions. [2023-12-02 12:30:45,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:45,571 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 1015 transitions. [2023-12-02 12:30:45,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-02 12:30:45,573 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:45,573 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:45,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-02 12:30:45,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:45,776 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:45,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:45,776 INFO L85 PathProgramCache]: Analyzing trace with hash -846362831, now seen corresponding path program 1 times [2023-12-02 12:30:45,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:30:45,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [649055844] [2023-12-02 12:30:45,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:45,777 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:45,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:30:45,777 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:30:45,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-02 12:30:45,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:45,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:30:45,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:46,008 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_37| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_45| (_ BitVec 32))) (and (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_45| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_37|) (_ bv0 1)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_45|) (_ bv0 1)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_45| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_37| (_ bv0 1))))) is different from true [2023-12-02 12:30:46,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:46,021 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:30:46,022 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:30:46,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [649055844] [2023-12-02 12:30:46,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [649055844] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:46,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:46,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:30:46,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184790942] [2023-12-02 12:30:46,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:46,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:30:46,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:30:46,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:30:46,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:46,023 INFO L87 Difference]: Start difference. First operand 364 states and 1015 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:46,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:46,087 INFO L93 Difference]: Finished difference Result 374 states and 1045 transitions. [2023-12-02 12:30:46,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:30:46,088 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-02 12:30:46,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:46,091 INFO L225 Difference]: With dead ends: 374 [2023-12-02 12:30:46,091 INFO L226 Difference]: Without dead ends: 374 [2023-12-02 12:30:46,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:46,092 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:46,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 18 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 59 Unchecked, 0.1s Time] [2023-12-02 12:30:46,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2023-12-02 12:30:46,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 366. [2023-12-02 12:30:46,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 364 states have (on average 2.8049450549450547) internal successors, (1021), 365 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:46,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 1021 transitions. [2023-12-02 12:30:46,108 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 1021 transitions. Word has length 13 [2023-12-02 12:30:46,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:46,108 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 1021 transitions. [2023-12-02 12:30:46,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:46,108 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 1021 transitions. [2023-12-02 12:30:46,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-02 12:30:46,110 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:46,110 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:46,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-02 12:30:46,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:46,314 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:46,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:46,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1784770511, now seen corresponding path program 1 times [2023-12-02 12:30:46,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:30:46,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [956166278] [2023-12-02 12:30:46,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:46,315 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:46,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:30:46,315 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:30:46,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-02 12:30:46,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:46,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:30:46,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:46,560 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_38| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_46| (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_46| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_38|)) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_46|)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_46| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_38| (_ bv0 1)) |c_#valid|))) is different from true [2023-12-02 12:30:46,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:46,573 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:30:46,573 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:30:46,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [956166278] [2023-12-02 12:30:46,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [956166278] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:46,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:46,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:30:46,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456944442] [2023-12-02 12:30:46,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:46,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:30:46,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:30:46,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:30:46,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:46,575 INFO L87 Difference]: Start difference. First operand 366 states and 1021 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:46,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:46,638 INFO L93 Difference]: Finished difference Result 378 states and 1051 transitions. [2023-12-02 12:30:46,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:30:46,639 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-12-02 12:30:46,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:46,642 INFO L225 Difference]: With dead ends: 378 [2023-12-02 12:30:46,642 INFO L226 Difference]: Without dead ends: 378 [2023-12-02 12:30:46,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:46,643 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:46,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 18 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 59 Unchecked, 0.1s Time] [2023-12-02 12:30:46,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2023-12-02 12:30:46,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 371. [2023-12-02 12:30:46,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 369 states have (on average 2.8048780487804876) internal successors, (1035), 370 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:46,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 1035 transitions. [2023-12-02 12:30:46,658 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 1035 transitions. Word has length 14 [2023-12-02 12:30:46,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:46,659 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 1035 transitions. [2023-12-02 12:30:46,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:46,659 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 1035 transitions. [2023-12-02 12:30:46,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-02 12:30:46,660 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:46,660 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:46,663 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-12-02 12:30:46,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:46,861 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:46,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:46,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1784770542, now seen corresponding path program 1 times [2023-12-02 12:30:46,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:30:46,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1602623834] [2023-12-02 12:30:46,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:46,862 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:46,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:30:46,863 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:30:46,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-02 12:30:46,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:46,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 12:30:46,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:46,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:46,944 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:30:46,944 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:30:46,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1602623834] [2023-12-02 12:30:46,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1602623834] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:46,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:46,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:30:46,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712666] [2023-12-02 12:30:46,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:46,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:30:46,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:30:46,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:30:46,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:30:46,946 INFO L87 Difference]: Start difference. First operand 371 states and 1035 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:46,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:46,990 INFO L93 Difference]: Finished difference Result 527 states and 1469 transitions. [2023-12-02 12:30:46,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:30:46,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-12-02 12:30:46,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:46,994 INFO L225 Difference]: With dead ends: 527 [2023-12-02 12:30:46,994 INFO L226 Difference]: Without dead ends: 527 [2023-12-02 12:30:46,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:30:46,995 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 11 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:46,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 28 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 12:30:46,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2023-12-02 12:30:47,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 413. [2023-12-02 12:30:47,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 411 states have (on average 2.7931873479318736) internal successors, (1148), 412 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:47,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 1148 transitions. [2023-12-02 12:30:47,007 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 1148 transitions. Word has length 14 [2023-12-02 12:30:47,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:47,007 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 1148 transitions. [2023-12-02 12:30:47,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:47,007 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 1148 transitions. [2023-12-02 12:30:47,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-02 12:30:47,008 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:47,008 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:47,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-12-02 12:30:47,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:47,209 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:47,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:47,209 INFO L85 PathProgramCache]: Analyzing trace with hash -46986805, now seen corresponding path program 1 times [2023-12-02 12:30:47,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:30:47,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [710250148] [2023-12-02 12:30:47,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:47,210 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:47,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:30:47,210 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:30:47,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-02 12:30:47,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:47,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:30:47,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:47,410 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_39| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_47| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_47|)) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_47| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_39|) (_ bv0 1)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_47| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_39| (_ bv0 1))))) is different from true [2023-12-02 12:30:47,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:47,434 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:30:47,435 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:30:47,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [710250148] [2023-12-02 12:30:47,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [710250148] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:47,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:47,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:30:47,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616351389] [2023-12-02 12:30:47,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:47,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:30:47,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:30:47,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:30:47,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:47,437 INFO L87 Difference]: Start difference. First operand 413 states and 1148 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:47,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:47,495 INFO L93 Difference]: Finished difference Result 425 states and 1173 transitions. [2023-12-02 12:30:47,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:30:47,495 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-12-02 12:30:47,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:47,499 INFO L225 Difference]: With dead ends: 425 [2023-12-02 12:30:47,499 INFO L226 Difference]: Without dead ends: 425 [2023-12-02 12:30:47,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:47,500 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:47,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 18 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 59 Unchecked, 0.1s Time] [2023-12-02 12:30:47,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2023-12-02 12:30:47,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 418. [2023-12-02 12:30:47,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 416 states have (on average 2.7908653846153846) internal successors, (1161), 417 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:47,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 1161 transitions. [2023-12-02 12:30:47,516 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 1161 transitions. Word has length 14 [2023-12-02 12:30:47,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:47,516 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 1161 transitions. [2023-12-02 12:30:47,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:47,516 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 1161 transitions. [2023-12-02 12:30:47,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-02 12:30:47,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:47,518 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:47,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-12-02 12:30:47,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:47,718 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:47,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:47,718 INFO L85 PathProgramCache]: Analyzing trace with hash -46986774, now seen corresponding path program 1 times [2023-12-02 12:30:47,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:30:47,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1972516693] [2023-12-02 12:30:47,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:47,719 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:47,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:30:47,720 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:30:47,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-02 12:30:47,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:47,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 12:30:47,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:47,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:47,795 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:30:47,795 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:30:47,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1972516693] [2023-12-02 12:30:47,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1972516693] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:47,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:47,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:30:47,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107430886] [2023-12-02 12:30:47,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:47,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:30:47,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:30:47,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:30:47,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:30:47,797 INFO L87 Difference]: Start difference. First operand 418 states and 1161 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:47,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:47,850 INFO L93 Difference]: Finished difference Result 613 states and 1702 transitions. [2023-12-02 12:30:47,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:30:47,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-12-02 12:30:47,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:47,856 INFO L225 Difference]: With dead ends: 613 [2023-12-02 12:30:47,856 INFO L226 Difference]: Without dead ends: 613 [2023-12-02 12:30:47,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:30:47,857 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 16 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:47,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 31 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 12:30:47,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2023-12-02 12:30:47,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 470. [2023-12-02 12:30:47,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 468 states have (on average 2.784188034188034) internal successors, (1303), 469 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:47,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 1303 transitions. [2023-12-02 12:30:47,874 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 1303 transitions. Word has length 14 [2023-12-02 12:30:47,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:47,875 INFO L495 AbstractCegarLoop]: Abstraction has 470 states and 1303 transitions. [2023-12-02 12:30:47,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:47,875 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 1303 transitions. [2023-12-02 12:30:47,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-02 12:30:47,876 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:47,876 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:47,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-12-02 12:30:48,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:48,077 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:48,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:48,077 INFO L85 PathProgramCache]: Analyzing trace with hash -467438565, now seen corresponding path program 2 times [2023-12-02 12:30:48,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:30:48,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [361039863] [2023-12-02 12:30:48,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:30:48,078 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:48,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:30:48,079 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:30:48,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-02 12:30:48,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 12:30:48,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:30:48,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:30:48,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:48,282 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_48| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_40| (_ BitVec 32))) (and (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_48| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_40|) (_ bv0 1)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_48| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_40| (_ bv0 1))) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_48|) (_ bv0 1)))) is different from true [2023-12-02 12:30:48,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:48,306 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:30:48,306 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:30:48,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [361039863] [2023-12-02 12:30:48,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [361039863] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:48,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:48,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:30:48,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840013390] [2023-12-02 12:30:48,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:48,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:30:48,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:30:48,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:30:48,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:48,308 INFO L87 Difference]: Start difference. First operand 470 states and 1303 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:48,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:48,376 INFO L93 Difference]: Finished difference Result 482 states and 1326 transitions. [2023-12-02 12:30:48,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:30:48,377 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-12-02 12:30:48,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:48,379 INFO L225 Difference]: With dead ends: 482 [2023-12-02 12:30:48,379 INFO L226 Difference]: Without dead ends: 482 [2023-12-02 12:30:48,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:48,380 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:48,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 18 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 58 Unchecked, 0.1s Time] [2023-12-02 12:30:48,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2023-12-02 12:30:48,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 469. [2023-12-02 12:30:48,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 467 states have (on average 2.7880085653104927) internal successors, (1302), 468 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:48,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 1302 transitions. [2023-12-02 12:30:48,392 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 1302 transitions. Word has length 14 [2023-12-02 12:30:48,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:48,392 INFO L495 AbstractCegarLoop]: Abstraction has 469 states and 1302 transitions. [2023-12-02 12:30:48,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:48,393 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 1302 transitions. [2023-12-02 12:30:48,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-02 12:30:48,394 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:48,394 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:48,397 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-12-02 12:30:48,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:48,596 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:48,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:48,597 INFO L85 PathProgramCache]: Analyzing trace with hash -467438751, now seen corresponding path program 1 times [2023-12-02 12:30:48,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:30:48,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [638979943] [2023-12-02 12:30:48,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:48,598 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:48,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:30:48,599 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:30:48,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-02 12:30:48,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:48,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:30:48,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:48,808 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_49| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_41| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_49|) (_ bv0 1)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_49| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_41| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_49| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_41|)))) is different from true [2023-12-02 12:30:48,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:48,828 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:30:48,829 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:30:48,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [638979943] [2023-12-02 12:30:48,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [638979943] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:48,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:48,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:30:48,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6782420] [2023-12-02 12:30:48,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:48,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:30:48,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:30:48,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:30:48,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:48,830 INFO L87 Difference]: Start difference. First operand 469 states and 1302 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:48,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:48,880 INFO L93 Difference]: Finished difference Result 474 states and 1309 transitions. [2023-12-02 12:30:48,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:30:48,880 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-12-02 12:30:48,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:48,884 INFO L225 Difference]: With dead ends: 474 [2023-12-02 12:30:48,884 INFO L226 Difference]: Without dead ends: 474 [2023-12-02 12:30:48,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:48,885 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:48,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 18 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 58 Unchecked, 0.0s Time] [2023-12-02 12:30:48,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2023-12-02 12:30:48,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 466. [2023-12-02 12:30:48,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 464 states have (on average 2.790948275862069) internal successors, (1295), 465 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:48,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 1295 transitions. [2023-12-02 12:30:48,900 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 1295 transitions. Word has length 14 [2023-12-02 12:30:48,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:48,900 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 1295 transitions. [2023-12-02 12:30:48,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:48,901 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 1295 transitions. [2023-12-02 12:30:48,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-02 12:30:48,902 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:48,902 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:48,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-02 12:30:49,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:49,102 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:49,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:49,103 INFO L85 PathProgramCache]: Analyzing trace with hash -467443525, now seen corresponding path program 2 times [2023-12-02 12:30:49,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:30:49,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1763860830] [2023-12-02 12:30:49,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:30:49,103 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:49,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:30:49,104 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:30:49,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-02 12:30:49,190 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 12:30:49,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:30:49,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:30:49,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:49,314 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_50| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_42| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_50|)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_50| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_42| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_50| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_42|)))) is different from true [2023-12-02 12:30:49,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:49,335 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:30:49,335 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:30:49,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1763860830] [2023-12-02 12:30:49,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1763860830] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:49,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:49,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:30:49,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025661254] [2023-12-02 12:30:49,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:49,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:30:49,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:30:49,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:30:49,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:49,337 INFO L87 Difference]: Start difference. First operand 466 states and 1295 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:49,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:49,389 INFO L93 Difference]: Finished difference Result 481 states and 1323 transitions. [2023-12-02 12:30:49,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:30:49,390 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-12-02 12:30:49,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:49,393 INFO L225 Difference]: With dead ends: 481 [2023-12-02 12:30:49,393 INFO L226 Difference]: Without dead ends: 481 [2023-12-02 12:30:49,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:49,394 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:49,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 18 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 58 Unchecked, 0.0s Time] [2023-12-02 12:30:49,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2023-12-02 12:30:49,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 466. [2023-12-02 12:30:49,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 464 states have (on average 2.793103448275862) internal successors, (1296), 465 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:49,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 1296 transitions. [2023-12-02 12:30:49,407 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 1296 transitions. Word has length 14 [2023-12-02 12:30:49,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:49,407 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 1296 transitions. [2023-12-02 12:30:49,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:49,407 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 1296 transitions. [2023-12-02 12:30:49,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 12:30:49,408 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:49,408 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:49,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-12-02 12:30:49,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:49,609 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:49,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:49,609 INFO L85 PathProgramCache]: Analyzing trace with hash 127411457, now seen corresponding path program 1 times [2023-12-02 12:30:49,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:30:49,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [936088213] [2023-12-02 12:30:49,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:49,609 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:49,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:30:49,610 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:30:49,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-02 12:30:49,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:49,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 12:30:49,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:49,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:49,725 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:30:49,725 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:30:49,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [936088213] [2023-12-02 12:30:49,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [936088213] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:49,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:49,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 12:30:49,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958250748] [2023-12-02 12:30:49,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:49,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 12:30:49,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:30:49,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 12:30:49,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 12:30:49,727 INFO L87 Difference]: Start difference. First operand 466 states and 1296 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:49,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:49,910 INFO L93 Difference]: Finished difference Result 679 states and 1884 transitions. [2023-12-02 12:30:49,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 12:30:49,910 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-12-02 12:30:49,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:49,914 INFO L225 Difference]: With dead ends: 679 [2023-12-02 12:30:49,914 INFO L226 Difference]: Without dead ends: 676 [2023-12-02 12:30:49,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-12-02 12:30:49,915 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 74 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:49,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 64 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 12:30:49,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2023-12-02 12:30:49,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 496. [2023-12-02 12:30:49,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 494 states have (on average 2.8076923076923075) internal successors, (1387), 495 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:49,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 1387 transitions. [2023-12-02 12:30:49,929 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 1387 transitions. Word has length 15 [2023-12-02 12:30:49,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:49,930 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 1387 transitions. [2023-12-02 12:30:49,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:49,930 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 1387 transitions. [2023-12-02 12:30:49,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 12:30:49,931 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:49,931 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:49,933 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-12-02 12:30:50,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:50,131 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:50,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:50,132 INFO L85 PathProgramCache]: Analyzing trace with hash -785685041, now seen corresponding path program 2 times [2023-12-02 12:30:50,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:30:50,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1255636285] [2023-12-02 12:30:50,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:30:50,132 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:50,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:30:50,133 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:30:50,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-02 12:30:50,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 12:30:50,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:30:50,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 12:30:50,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:50,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:50,231 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:30:50,231 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:30:50,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1255636285] [2023-12-02 12:30:50,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1255636285] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:50,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:50,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 12:30:50,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305613581] [2023-12-02 12:30:50,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:50,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 12:30:50,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:30:50,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 12:30:50,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 12:30:50,233 INFO L87 Difference]: Start difference. First operand 496 states and 1387 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:50,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:50,411 INFO L93 Difference]: Finished difference Result 769 states and 2138 transitions. [2023-12-02 12:30:50,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 12:30:50,411 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-12-02 12:30:50,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:50,416 INFO L225 Difference]: With dead ends: 769 [2023-12-02 12:30:50,416 INFO L226 Difference]: Without dead ends: 766 [2023-12-02 12:30:50,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-02 12:30:50,416 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 71 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:50,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 61 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 12:30:50,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2023-12-02 12:30:50,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 450. [2023-12-02 12:30:50,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 448 states have (on average 2.7879464285714284) internal successors, (1249), 449 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:50,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1249 transitions. [2023-12-02 12:30:50,432 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1249 transitions. Word has length 15 [2023-12-02 12:30:50,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:50,432 INFO L495 AbstractCegarLoop]: Abstraction has 450 states and 1249 transitions. [2023-12-02 12:30:50,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:50,432 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1249 transitions. [2023-12-02 12:30:50,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 12:30:50,433 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:50,434 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:50,436 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-12-02 12:30:50,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:50,634 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:50,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:50,634 INFO L85 PathProgramCache]: Analyzing trace with hash -806637176, now seen corresponding path program 1 times [2023-12-02 12:30:50,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:30:50,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1935103859] [2023-12-02 12:30:50,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:50,635 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:50,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:30:50,636 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:30:50,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-02 12:30:50,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:50,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:30:50,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:50,815 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_51| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_43| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_51|)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_51| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_43| (_ bv0 1))) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_51| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_43|) (_ bv0 1)))) is different from true [2023-12-02 12:30:50,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:50,825 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:30:50,825 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:30:50,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1935103859] [2023-12-02 12:30:50,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1935103859] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:50,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:50,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:30:50,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171067089] [2023-12-02 12:30:50,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:50,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:30:50,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:30:50,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:30:50,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:50,827 INFO L87 Difference]: Start difference. First operand 450 states and 1249 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:50,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:50,886 INFO L93 Difference]: Finished difference Result 467 states and 1279 transitions. [2023-12-02 12:30:50,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:30:50,886 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-12-02 12:30:50,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:50,889 INFO L225 Difference]: With dead ends: 467 [2023-12-02 12:30:50,889 INFO L226 Difference]: Without dead ends: 467 [2023-12-02 12:30:50,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:50,889 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:50,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 18 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 59 Unchecked, 0.1s Time] [2023-12-02 12:30:50,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2023-12-02 12:30:50,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 457. [2023-12-02 12:30:50,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 455 states have (on average 2.7758241758241757) internal successors, (1263), 456 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:50,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 1263 transitions. [2023-12-02 12:30:50,900 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 1263 transitions. Word has length 15 [2023-12-02 12:30:50,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:50,900 INFO L495 AbstractCegarLoop]: Abstraction has 457 states and 1263 transitions. [2023-12-02 12:30:50,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:50,900 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 1263 transitions. [2023-12-02 12:30:50,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 12:30:50,900 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:50,901 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:50,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-12-02 12:30:51,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:51,101 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:51,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:51,102 INFO L85 PathProgramCache]: Analyzing trace with hash -506688330, now seen corresponding path program 2 times [2023-12-02 12:30:51,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:30:51,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [516720040] [2023-12-02 12:30:51,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:30:51,102 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:51,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:30:51,103 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:30:51,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-02 12:30:51,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 12:30:51,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:30:51,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:30:51,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:51,280 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_52| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_44| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_52|)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_52| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_44| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_52| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_44|)))) is different from true [2023-12-02 12:30:51,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:51,299 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:30:51,299 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:30:51,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [516720040] [2023-12-02 12:30:51,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [516720040] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:51,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:51,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:30:51,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626454619] [2023-12-02 12:30:51,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:51,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:30:51,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:30:51,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:30:51,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:51,301 INFO L87 Difference]: Start difference. First operand 457 states and 1263 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:51,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:51,351 INFO L93 Difference]: Finished difference Result 476 states and 1298 transitions. [2023-12-02 12:30:51,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:30:51,351 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-12-02 12:30:51,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:51,354 INFO L225 Difference]: With dead ends: 476 [2023-12-02 12:30:51,354 INFO L226 Difference]: Without dead ends: 476 [2023-12-02 12:30:51,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:51,355 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:51,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 18 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 58 Unchecked, 0.0s Time] [2023-12-02 12:30:51,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2023-12-02 12:30:51,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 463. [2023-12-02 12:30:51,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 461 states have (on average 2.765726681127983) internal successors, (1275), 462 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:51,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 1275 transitions. [2023-12-02 12:30:51,364 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 1275 transitions. Word has length 15 [2023-12-02 12:30:51,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:51,364 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 1275 transitions. [2023-12-02 12:30:51,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:51,365 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 1275 transitions. [2023-12-02 12:30:51,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 12:30:51,366 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:51,366 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:51,368 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2023-12-02 12:30:51,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:51,566 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:51,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:51,567 INFO L85 PathProgramCache]: Analyzing trace with hash -506688578, now seen corresponding path program 1 times [2023-12-02 12:30:51,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:30:51,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1106815997] [2023-12-02 12:30:51,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:51,567 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:51,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:30:51,568 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:30:51,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-02 12:30:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:51,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:30:51,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:51,756 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_45| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_53| (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_53| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_45|)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_53| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_45| (_ bv0 1))) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_53|) (_ bv0 1)))) is different from true [2023-12-02 12:30:51,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:51,781 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:30:51,781 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:30:51,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1106815997] [2023-12-02 12:30:51,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1106815997] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:51,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:51,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:30:51,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250409452] [2023-12-02 12:30:51,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:51,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:30:51,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:30:51,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:30:51,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:51,783 INFO L87 Difference]: Start difference. First operand 463 states and 1275 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:51,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:51,837 INFO L93 Difference]: Finished difference Result 468 states and 1283 transitions. [2023-12-02 12:30:51,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:30:51,838 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-12-02 12:30:51,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:51,841 INFO L225 Difference]: With dead ends: 468 [2023-12-02 12:30:51,841 INFO L226 Difference]: Without dead ends: 468 [2023-12-02 12:30:51,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:51,842 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:51,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 18 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 58 Unchecked, 0.1s Time] [2023-12-02 12:30:51,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2023-12-02 12:30:51,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 463. [2023-12-02 12:30:51,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 461 states have (on average 2.765726681127983) internal successors, (1275), 462 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:51,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 1275 transitions. [2023-12-02 12:30:51,856 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 1275 transitions. Word has length 15 [2023-12-02 12:30:51,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:51,856 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 1275 transitions. [2023-12-02 12:30:51,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:51,856 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 1275 transitions. [2023-12-02 12:30:51,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 12:30:51,857 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:51,857 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:51,860 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2023-12-02 12:30:52,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:52,058 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:52,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:52,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1456157983, now seen corresponding path program 1 times [2023-12-02 12:30:52,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:30:52,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1479365808] [2023-12-02 12:30:52,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:52,059 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:52,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:30:52,060 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:30:52,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-02 12:30:52,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:52,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:30:52,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:52,241 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_46| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_54| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_54|)) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_54| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_46|) (_ bv0 1)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_54| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_46| (_ bv0 1)) |c_#valid|))) is different from true [2023-12-02 12:30:52,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:52,251 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:30:52,251 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:30:52,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1479365808] [2023-12-02 12:30:52,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1479365808] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:52,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:52,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:30:52,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610460365] [2023-12-02 12:30:52,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:52,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:30:52,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:30:52,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:30:52,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:52,253 INFO L87 Difference]: Start difference. First operand 463 states and 1275 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:52,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:52,297 INFO L93 Difference]: Finished difference Result 478 states and 1301 transitions. [2023-12-02 12:30:52,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:30:52,297 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-12-02 12:30:52,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:52,300 INFO L225 Difference]: With dead ends: 478 [2023-12-02 12:30:52,300 INFO L226 Difference]: Without dead ends: 478 [2023-12-02 12:30:52,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:52,301 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:52,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 18 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 59 Unchecked, 0.0s Time] [2023-12-02 12:30:52,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2023-12-02 12:30:52,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 469. [2023-12-02 12:30:52,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 467 states have (on average 2.7558886509635974) internal successors, (1287), 468 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:52,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 1287 transitions. [2023-12-02 12:30:52,317 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 1287 transitions. Word has length 15 [2023-12-02 12:30:52,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:52,318 INFO L495 AbstractCegarLoop]: Abstraction has 469 states and 1287 transitions. [2023-12-02 12:30:52,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:52,318 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 1287 transitions. [2023-12-02 12:30:52,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 12:30:52,318 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:52,319 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:52,321 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2023-12-02 12:30:52,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:52,519 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:52,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:52,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1456586651, now seen corresponding path program 1 times [2023-12-02 12:30:52,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:30:52,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [960336424] [2023-12-02 12:30:52,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:52,520 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:52,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:30:52,521 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:30:52,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-02 12:30:52,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:52,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:30:52,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:52,698 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_47| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_55| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_55|) (_ bv0 1)) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_55| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_47|) (_ bv0 1)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_55| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_47| (_ bv0 1)) |c_#valid|))) is different from true [2023-12-02 12:30:52,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:52,715 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:30:52,716 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:30:52,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [960336424] [2023-12-02 12:30:52,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [960336424] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:52,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:52,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:30:52,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48719218] [2023-12-02 12:30:52,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:52,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:30:52,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:30:52,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:30:52,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:52,717 INFO L87 Difference]: Start difference. First operand 469 states and 1287 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:52,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:52,769 INFO L93 Difference]: Finished difference Result 483 states and 1311 transitions. [2023-12-02 12:30:52,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:30:52,769 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-12-02 12:30:52,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:52,773 INFO L225 Difference]: With dead ends: 483 [2023-12-02 12:30:52,773 INFO L226 Difference]: Without dead ends: 483 [2023-12-02 12:30:52,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:52,774 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:52,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 18 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 58 Unchecked, 0.0s Time] [2023-12-02 12:30:52,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2023-12-02 12:30:52,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 469. [2023-12-02 12:30:52,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 467 states have (on average 2.7558886509635974) internal successors, (1287), 468 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:52,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 1287 transitions. [2023-12-02 12:30:52,785 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 1287 transitions. Word has length 15 [2023-12-02 12:30:52,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:52,786 INFO L495 AbstractCegarLoop]: Abstraction has 469 states and 1287 transitions. [2023-12-02 12:30:52,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:52,786 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 1287 transitions. [2023-12-02 12:30:52,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 12:30:52,787 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:52,788 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:52,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-02 12:30:52,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:52,990 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:52,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:52,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1456590433, now seen corresponding path program 2 times [2023-12-02 12:30:52,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:30:52,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [781551394] [2023-12-02 12:30:52,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:30:52,991 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:52,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:30:52,992 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:30:52,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-02 12:30:53,059 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 12:30:53,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:30:53,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:30:53,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:53,171 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_48| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_56| (_ BitVec 32))) (and (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_56| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_48| (_ bv0 1)) |c_#valid|) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_56|) (_ bv0 1)) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_56| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_48|) (_ bv0 1)))) is different from true [2023-12-02 12:30:53,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:53,190 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:30:53,190 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:30:53,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [781551394] [2023-12-02 12:30:53,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [781551394] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:53,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:53,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:30:53,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963927820] [2023-12-02 12:30:53,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:53,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:30:53,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:30:53,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:30:53,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:53,192 INFO L87 Difference]: Start difference. First operand 469 states and 1287 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:53,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:53,241 INFO L93 Difference]: Finished difference Result 487 states and 1320 transitions. [2023-12-02 12:30:53,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:30:53,241 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-12-02 12:30:53,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:53,244 INFO L225 Difference]: With dead ends: 487 [2023-12-02 12:30:53,244 INFO L226 Difference]: Without dead ends: 487 [2023-12-02 12:30:53,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:53,245 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:53,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 18 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 58 Unchecked, 0.0s Time] [2023-12-02 12:30:53,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2023-12-02 12:30:53,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 474. [2023-12-02 12:30:53,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 472 states have (on average 2.7478813559322033) internal successors, (1297), 473 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:53,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 1297 transitions. [2023-12-02 12:30:53,254 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 1297 transitions. Word has length 15 [2023-12-02 12:30:53,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:53,254 INFO L495 AbstractCegarLoop]: Abstraction has 474 states and 1297 transitions. [2023-12-02 12:30:53,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:53,254 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 1297 transitions. [2023-12-02 12:30:53,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 12:30:53,255 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:53,256 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:53,258 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2023-12-02 12:30:53,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:53,456 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:53,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:53,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1605692950, now seen corresponding path program 3 times [2023-12-02 12:30:53,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:30:53,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [784532567] [2023-12-02 12:30:53,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 12:30:53,457 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:53,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:30:53,458 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:30:53,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-02 12:30:53,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 12:30:53,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:30:53,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:30:53,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:53,619 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_49| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_57| (_ BitVec 32))) (and (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_57| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_49|) (_ bv0 1)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_57| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_49| (_ bv0 1)) |c_#valid|) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_57|) (_ bv0 1)))) is different from true [2023-12-02 12:30:53,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:53,650 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:30:53,650 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:30:53,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [784532567] [2023-12-02 12:30:53,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [784532567] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:53,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:53,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:30:53,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938205644] [2023-12-02 12:30:53,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:53,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:30:53,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:30:53,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:30:53,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:53,652 INFO L87 Difference]: Start difference. First operand 474 states and 1297 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:53,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:53,706 INFO L93 Difference]: Finished difference Result 489 states and 1325 transitions. [2023-12-02 12:30:53,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:30:53,706 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-12-02 12:30:53,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:53,709 INFO L225 Difference]: With dead ends: 489 [2023-12-02 12:30:53,710 INFO L226 Difference]: Without dead ends: 489 [2023-12-02 12:30:53,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:53,710 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:53,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 18 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 57 Unchecked, 0.0s Time] [2023-12-02 12:30:53,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2023-12-02 12:30:53,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 471. [2023-12-02 12:30:53,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 469 states have (on average 2.7547974413646057) internal successors, (1292), 470 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:53,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 1292 transitions. [2023-12-02 12:30:53,723 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 1292 transitions. Word has length 15 [2023-12-02 12:30:53,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:53,723 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 1292 transitions. [2023-12-02 12:30:53,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:53,724 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 1292 transitions. [2023-12-02 12:30:53,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 12:30:53,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:53,725 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:53,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-12-02 12:30:53,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:53,925 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:53,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:53,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1605693198, now seen corresponding path program 2 times [2023-12-02 12:30:53,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:30:53,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1688850351] [2023-12-02 12:30:53,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:30:53,926 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:53,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:30:53,927 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:30:53,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-02 12:30:53,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 12:30:53,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:30:53,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:30:53,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:54,083 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_58| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_50| (_ BitVec 32))) (and (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_58| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_50| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_58|)) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_58| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_50|) (_ bv0 1)))) is different from true [2023-12-02 12:30:54,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:54,108 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:30:54,108 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:30:54,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1688850351] [2023-12-02 12:30:54,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1688850351] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:54,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:54,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:30:54,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880874054] [2023-12-02 12:30:54,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:54,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:30:54,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:30:54,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:30:54,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:54,110 INFO L87 Difference]: Start difference. First operand 471 states and 1292 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:54,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:54,154 INFO L93 Difference]: Finished difference Result 477 states and 1301 transitions. [2023-12-02 12:30:54,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:30:54,155 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-12-02 12:30:54,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:54,158 INFO L225 Difference]: With dead ends: 477 [2023-12-02 12:30:54,158 INFO L226 Difference]: Without dead ends: 477 [2023-12-02 12:30:54,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:54,158 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:54,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 18 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 57 Unchecked, 0.0s Time] [2023-12-02 12:30:54,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2023-12-02 12:30:54,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 470. [2023-12-02 12:30:54,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 468 states have (on average 2.7564102564102564) internal successors, (1290), 469 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:54,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 1290 transitions. [2023-12-02 12:30:54,167 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 1290 transitions. Word has length 15 [2023-12-02 12:30:54,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:54,167 INFO L495 AbstractCegarLoop]: Abstraction has 470 states and 1290 transitions. [2023-12-02 12:30:54,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:54,168 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 1290 transitions. [2023-12-02 12:30:54,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 12:30:54,168 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:54,168 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:54,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2023-12-02 12:30:54,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:54,369 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:54,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:54,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1605698933, now seen corresponding path program 2 times [2023-12-02 12:30:54,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:30:54,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [118168880] [2023-12-02 12:30:54,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:30:54,370 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:54,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:30:54,370 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:30:54,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-02 12:30:54,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 12:30:54,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:30:54,440 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:30:54,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:54,543 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_59| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_51| (_ BitVec 32))) (and (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_59| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_51| (_ bv0 1)) |c_#valid|) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_59| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_51|) (_ bv0 1)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_59|) (_ bv0 1)))) is different from true [2023-12-02 12:30:54,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:54,570 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:30:54,570 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:30:54,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [118168880] [2023-12-02 12:30:54,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [118168880] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:54,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:54,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:30:54,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866421333] [2023-12-02 12:30:54,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:54,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:30:54,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:30:54,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:30:54,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:54,572 INFO L87 Difference]: Start difference. First operand 470 states and 1290 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:54,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:54,623 INFO L93 Difference]: Finished difference Result 477 states and 1301 transitions. [2023-12-02 12:30:54,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:30:54,624 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-12-02 12:30:54,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:54,626 INFO L225 Difference]: With dead ends: 477 [2023-12-02 12:30:54,626 INFO L226 Difference]: Without dead ends: 477 [2023-12-02 12:30:54,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:54,627 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:54,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 18 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 57 Unchecked, 0.0s Time] [2023-12-02 12:30:54,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2023-12-02 12:30:54,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 468. [2023-12-02 12:30:54,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 466 states have (on average 2.759656652360515) internal successors, (1286), 467 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:54,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 1286 transitions. [2023-12-02 12:30:54,637 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 1286 transitions. Word has length 15 [2023-12-02 12:30:54,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:54,637 INFO L495 AbstractCegarLoop]: Abstraction has 468 states and 1286 transitions. [2023-12-02 12:30:54,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:54,637 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 1286 transitions. [2023-12-02 12:30:54,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 12:30:54,638 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:54,638 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:54,640 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2023-12-02 12:30:54,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:54,838 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:54,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:54,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1605846865, now seen corresponding path program 3 times [2023-12-02 12:30:54,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:30:54,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1085423041] [2023-12-02 12:30:54,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 12:30:54,839 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:54,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:30:54,840 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:30:54,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-12-02 12:30:54,904 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 12:30:54,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:30:54,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:30:54,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:55,002 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_60| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_52| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_60|)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_60| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_52| (_ bv0 1)) |c_#valid|) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_60| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_52|) (_ bv0 1)))) is different from true [2023-12-02 12:30:55,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:55,029 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:30:55,029 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:30:55,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1085423041] [2023-12-02 12:30:55,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1085423041] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:55,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:55,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:30:55,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030505757] [2023-12-02 12:30:55,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:55,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:30:55,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:30:55,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:30:55,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:55,030 INFO L87 Difference]: Start difference. First operand 468 states and 1286 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:55,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:55,082 INFO L93 Difference]: Finished difference Result 484 states and 1315 transitions. [2023-12-02 12:30:55,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:30:55,082 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-12-02 12:30:55,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:55,085 INFO L225 Difference]: With dead ends: 484 [2023-12-02 12:30:55,085 INFO L226 Difference]: Without dead ends: 484 [2023-12-02 12:30:55,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:55,086 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:55,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 18 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 57 Unchecked, 0.0s Time] [2023-12-02 12:30:55,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2023-12-02 12:30:55,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 464. [2023-12-02 12:30:55,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 462 states have (on average 2.7683982683982684) internal successors, (1279), 463 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:55,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 1279 transitions. [2023-12-02 12:30:55,098 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 1279 transitions. Word has length 15 [2023-12-02 12:30:55,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:55,098 INFO L495 AbstractCegarLoop]: Abstraction has 464 states and 1279 transitions. [2023-12-02 12:30:55,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:55,098 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1279 transitions. [2023-12-02 12:30:55,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 12:30:55,099 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:55,100 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:55,102 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2023-12-02 12:30:55,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:55,300 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:55,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:55,300 INFO L85 PathProgramCache]: Analyzing trace with hash 548317972, now seen corresponding path program 1 times [2023-12-02 12:30:55,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:30:55,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1478401705] [2023-12-02 12:30:55,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:55,301 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:55,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:30:55,302 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:30:55,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-12-02 12:30:55,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:55,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 12:30:55,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:55,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:55,400 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:30:55,400 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:30:55,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1478401705] [2023-12-02 12:30:55,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1478401705] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:55,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:55,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 12:30:55,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897974020] [2023-12-02 12:30:55,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:55,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 12:30:55,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:30:55,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 12:30:55,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 12:30:55,401 INFO L87 Difference]: Start difference. First operand 464 states and 1279 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:55,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:55,551 INFO L93 Difference]: Finished difference Result 536 states and 1467 transitions. [2023-12-02 12:30:55,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 12:30:55,551 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-12-02 12:30:55,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:55,555 INFO L225 Difference]: With dead ends: 536 [2023-12-02 12:30:55,555 INFO L226 Difference]: Without dead ends: 535 [2023-12-02 12:30:55,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-12-02 12:30:55,556 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 57 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:55,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 59 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 12:30:55,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2023-12-02 12:30:55,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 438. [2023-12-02 12:30:55,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 436 states have (on average 2.7545871559633026) internal successors, (1201), 437 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:55,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 1201 transitions. [2023-12-02 12:30:55,565 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 1201 transitions. Word has length 15 [2023-12-02 12:30:55,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:55,565 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 1201 transitions. [2023-12-02 12:30:55,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:55,565 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 1201 transitions. [2023-12-02 12:30:55,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 12:30:55,566 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:55,566 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:55,568 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2023-12-02 12:30:55,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:55,767 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:55,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:55,767 INFO L85 PathProgramCache]: Analyzing trace with hash -345245366, now seen corresponding path program 1 times [2023-12-02 12:30:55,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:30:55,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1729075316] [2023-12-02 12:30:55,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:55,767 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:55,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:30:55,768 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:30:55,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-12-02 12:30:55,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:55,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:30:55,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:55,954 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_61| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_53| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_61|) (_ bv0 1)) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_61| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_53|)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_61| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_53| (_ bv0 1)) |c_#valid|))) is different from true [2023-12-02 12:30:55,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:55,961 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:30:55,961 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:30:55,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1729075316] [2023-12-02 12:30:55,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1729075316] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:55,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:55,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:30:55,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127858238] [2023-12-02 12:30:55,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:55,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:30:55,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:30:55,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:30:55,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:55,963 INFO L87 Difference]: Start difference. First operand 438 states and 1201 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:56,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:56,011 INFO L93 Difference]: Finished difference Result 455 states and 1235 transitions. [2023-12-02 12:30:56,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:30:56,012 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-02 12:30:56,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:56,015 INFO L225 Difference]: With dead ends: 455 [2023-12-02 12:30:56,015 INFO L226 Difference]: Without dead ends: 455 [2023-12-02 12:30:56,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:56,016 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:56,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 18 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 59 Unchecked, 0.0s Time] [2023-12-02 12:30:56,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2023-12-02 12:30:56,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 447. [2023-12-02 12:30:56,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 445 states have (on average 2.748314606741573) internal successors, (1223), 446 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:56,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 1223 transitions. [2023-12-02 12:30:56,033 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 1223 transitions. Word has length 16 [2023-12-02 12:30:56,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:56,033 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 1223 transitions. [2023-12-02 12:30:56,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:56,033 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 1223 transitions. [2023-12-02 12:30:56,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 12:30:56,035 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:56,035 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:56,037 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2023-12-02 12:30:56,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:56,235 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:56,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:56,236 INFO L85 PathProgramCache]: Analyzing trace with hash 764052028, now seen corresponding path program 2 times [2023-12-02 12:30:56,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:30:56,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1404181931] [2023-12-02 12:30:56,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:30:56,236 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:56,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:30:56,237 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:30:56,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-12-02 12:30:56,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 12:30:56,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:30:56,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:30:56,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:56,425 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_62| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_54| (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_62| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_54|)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_62| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_54| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_62|)))) is different from true [2023-12-02 12:30:56,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:56,443 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:30:56,443 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:30:56,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1404181931] [2023-12-02 12:30:56,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1404181931] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:56,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:56,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:30:56,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999340010] [2023-12-02 12:30:56,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:56,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:30:56,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:30:56,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:30:56,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:56,445 INFO L87 Difference]: Start difference. First operand 447 states and 1223 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:56,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:56,487 INFO L93 Difference]: Finished difference Result 467 states and 1265 transitions. [2023-12-02 12:30:56,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:30:56,488 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-02 12:30:56,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:56,490 INFO L225 Difference]: With dead ends: 467 [2023-12-02 12:30:56,490 INFO L226 Difference]: Without dead ends: 467 [2023-12-02 12:30:56,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:56,491 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:56,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 18 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 58 Unchecked, 0.0s Time] [2023-12-02 12:30:56,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2023-12-02 12:30:56,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 453. [2023-12-02 12:30:56,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 451 states have (on average 2.738359201773836) internal successors, (1235), 452 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:56,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 1235 transitions. [2023-12-02 12:30:56,499 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 1235 transitions. Word has length 16 [2023-12-02 12:30:56,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:56,499 INFO L495 AbstractCegarLoop]: Abstraction has 453 states and 1235 transitions. [2023-12-02 12:30:56,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:56,499 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 1235 transitions. [2023-12-02 12:30:56,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 12:30:56,500 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:56,500 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:56,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2023-12-02 12:30:56,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:56,700 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:56,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:56,701 INFO L85 PathProgramCache]: Analyzing trace with hash 764051749, now seen corresponding path program 1 times [2023-12-02 12:30:56,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:30:56,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1456500723] [2023-12-02 12:30:56,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:56,701 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:56,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:30:56,702 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:30:56,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-12-02 12:30:56,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:56,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:30:56,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:56,902 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_63| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_55| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_63|) (_ bv0 1)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_63| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_55| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_63| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_55|)))) is different from true [2023-12-02 12:30:56,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:56,919 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:30:56,919 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:30:56,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1456500723] [2023-12-02 12:30:56,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1456500723] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:56,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:56,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:30:56,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175710354] [2023-12-02 12:30:56,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:56,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:30:56,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:30:56,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:30:56,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:56,921 INFO L87 Difference]: Start difference. First operand 453 states and 1235 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:56,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:56,968 INFO L93 Difference]: Finished difference Result 458 states and 1242 transitions. [2023-12-02 12:30:56,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:30:56,969 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-02 12:30:56,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:56,971 INFO L225 Difference]: With dead ends: 458 [2023-12-02 12:30:56,971 INFO L226 Difference]: Without dead ends: 458 [2023-12-02 12:30:56,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:56,972 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:56,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 18 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 58 Unchecked, 0.0s Time] [2023-12-02 12:30:56,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2023-12-02 12:30:56,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 453. [2023-12-02 12:30:56,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 451 states have (on average 2.738359201773836) internal successors, (1235), 452 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:56,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 1235 transitions. [2023-12-02 12:30:56,980 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 1235 transitions. Word has length 16 [2023-12-02 12:30:56,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:56,980 INFO L495 AbstractCegarLoop]: Abstraction has 453 states and 1235 transitions. [2023-12-02 12:30:56,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:56,980 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 1235 transitions. [2023-12-02 12:30:56,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 12:30:56,981 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:56,981 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:56,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Ended with exit code 0 [2023-12-02 12:30:57,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:57,181 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:57,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:57,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1621607178, now seen corresponding path program 1 times [2023-12-02 12:30:57,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:30:57,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [155824430] [2023-12-02 12:30:57,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:57,182 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:57,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:30:57,183 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:30:57,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-12-02 12:30:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:57,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:30:57,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:57,350 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_56| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_64| (_ BitVec 32))) (and (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_64| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_56|) (_ bv0 1)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_64| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_56| (_ bv0 1)) |c_#valid|) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_64|) (_ bv0 1)))) is different from true [2023-12-02 12:30:57,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:57,367 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:30:57,367 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:30:57,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [155824430] [2023-12-02 12:30:57,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [155824430] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:57,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:57,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:30:57,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961032568] [2023-12-02 12:30:57,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:57,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:30:57,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:30:57,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:30:57,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:57,369 INFO L87 Difference]: Start difference. First operand 453 states and 1235 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:57,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:57,412 INFO L93 Difference]: Finished difference Result 472 states and 1269 transitions. [2023-12-02 12:30:57,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:30:57,413 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-02 12:30:57,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:57,416 INFO L225 Difference]: With dead ends: 472 [2023-12-02 12:30:57,416 INFO L226 Difference]: Without dead ends: 472 [2023-12-02 12:30:57,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:57,417 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:57,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 18 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 58 Unchecked, 0.0s Time] [2023-12-02 12:30:57,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2023-12-02 12:30:57,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 458. [2023-12-02 12:30:57,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 456 states have (on average 2.7346491228070176) internal successors, (1247), 457 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:57,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 1247 transitions. [2023-12-02 12:30:57,428 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 1247 transitions. Word has length 16 [2023-12-02 12:30:57,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:57,428 INFO L495 AbstractCegarLoop]: Abstraction has 458 states and 1247 transitions. [2023-12-02 12:30:57,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:57,431 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 1247 transitions. [2023-12-02 12:30:57,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 12:30:57,432 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:57,432 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:57,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Ended with exit code 0 [2023-12-02 12:30:57,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:57,632 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:57,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:57,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1472531662, now seen corresponding path program 3 times [2023-12-02 12:30:57,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:30:57,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1650626737] [2023-12-02 12:30:57,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 12:30:57,633 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:57,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:30:57,634 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:30:57,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-12-02 12:30:57,700 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 12:30:57,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:30:57,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:30:57,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:57,796 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_57| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_65| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_65|) (_ bv0 1)) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_65| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_57|)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_65| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_57| (_ bv0 1)) |c_#valid|))) is different from true [2023-12-02 12:30:57,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:57,818 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:30:57,818 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:30:57,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1650626737] [2023-12-02 12:30:57,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1650626737] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:57,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:57,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:30:57,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902520629] [2023-12-02 12:30:57,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:57,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:30:57,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:30:57,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:30:57,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:57,820 INFO L87 Difference]: Start difference. First operand 458 states and 1247 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:57,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:57,869 INFO L93 Difference]: Finished difference Result 492 states and 1317 transitions. [2023-12-02 12:30:57,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:30:57,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-02 12:30:57,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:57,872 INFO L225 Difference]: With dead ends: 492 [2023-12-02 12:30:57,872 INFO L226 Difference]: Without dead ends: 492 [2023-12-02 12:30:57,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:57,872 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:57,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 18 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 57 Unchecked, 0.0s Time] [2023-12-02 12:30:57,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2023-12-02 12:30:57,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 465. [2023-12-02 12:30:57,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 463 states have (on average 2.7235421166306697) internal successors, (1261), 464 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:57,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 1261 transitions. [2023-12-02 12:30:57,881 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 1261 transitions. Word has length 16 [2023-12-02 12:30:57,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:57,881 INFO L495 AbstractCegarLoop]: Abstraction has 465 states and 1261 transitions. [2023-12-02 12:30:57,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:57,881 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 1261 transitions. [2023-12-02 12:30:57,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 12:30:57,882 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:57,882 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:57,884 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Ended with exit code 0 [2023-12-02 12:30:58,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:58,083 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:58,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:58,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1472531383, now seen corresponding path program 2 times [2023-12-02 12:30:58,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:30:58,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [269473456] [2023-12-02 12:30:58,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:30:58,083 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:58,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:30:58,084 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:30:58,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-12-02 12:30:58,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 12:30:58,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:30:58,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:30:58,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:58,264 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_58| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_66| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_66|)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_66| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_58| (_ bv0 1))) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_66| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_58|) (_ bv0 1)))) is different from true [2023-12-02 12:30:58,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:58,286 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:30:58,286 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:30:58,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [269473456] [2023-12-02 12:30:58,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [269473456] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:58,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:58,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:30:58,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498816596] [2023-12-02 12:30:58,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:58,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:30:58,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:30:58,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:30:58,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:58,288 INFO L87 Difference]: Start difference. First operand 465 states and 1261 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:58,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:58,334 INFO L93 Difference]: Finished difference Result 481 states and 1291 transitions. [2023-12-02 12:30:58,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:30:58,335 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-02 12:30:58,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:58,338 INFO L225 Difference]: With dead ends: 481 [2023-12-02 12:30:58,338 INFO L226 Difference]: Without dead ends: 481 [2023-12-02 12:30:58,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:58,339 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:58,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 18 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 57 Unchecked, 0.0s Time] [2023-12-02 12:30:58,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2023-12-02 12:30:58,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 465. [2023-12-02 12:30:58,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 463 states have (on average 2.7235421166306697) internal successors, (1261), 464 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:58,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 1261 transitions. [2023-12-02 12:30:58,347 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 1261 transitions. Word has length 16 [2023-12-02 12:30:58,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:58,347 INFO L495 AbstractCegarLoop]: Abstraction has 465 states and 1261 transitions. [2023-12-02 12:30:58,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:58,347 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 1261 transitions. [2023-12-02 12:30:58,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 12:30:58,348 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:58,348 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:58,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2023-12-02 12:30:58,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:58,549 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:58,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:58,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1472523726, now seen corresponding path program 2 times [2023-12-02 12:30:58,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:30:58,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1348844487] [2023-12-02 12:30:58,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:30:58,549 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:58,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:30:58,550 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:30:58,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-12-02 12:30:58,617 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 12:30:58,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:30:58,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:30:58,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:58,716 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_59| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_67| (_ BitVec 32))) (and (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_67| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_59| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_67| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_59|)) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_67|)))) is different from true [2023-12-02 12:30:58,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:58,741 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:30:58,742 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:30:58,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1348844487] [2023-12-02 12:30:58,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1348844487] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:58,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:58,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:30:58,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614522292] [2023-12-02 12:30:58,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:58,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:30:58,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:30:58,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:30:58,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:58,743 INFO L87 Difference]: Start difference. First operand 465 states and 1261 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:58,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:58,786 INFO L93 Difference]: Finished difference Result 475 states and 1279 transitions. [2023-12-02 12:30:58,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:30:58,787 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-02 12:30:58,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:58,790 INFO L225 Difference]: With dead ends: 475 [2023-12-02 12:30:58,790 INFO L226 Difference]: Without dead ends: 475 [2023-12-02 12:30:58,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:58,791 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:58,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 18 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 57 Unchecked, 0.0s Time] [2023-12-02 12:30:58,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2023-12-02 12:30:58,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 464. [2023-12-02 12:30:58,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 462 states have (on average 2.722943722943723) internal successors, (1258), 463 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:58,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 1258 transitions. [2023-12-02 12:30:58,802 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 1258 transitions. Word has length 16 [2023-12-02 12:30:58,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:58,802 INFO L495 AbstractCegarLoop]: Abstraction has 464 states and 1258 transitions. [2023-12-02 12:30:58,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:58,802 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1258 transitions. [2023-12-02 12:30:58,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 12:30:58,803 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:58,803 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:58,805 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Ended with exit code 0 [2023-12-02 12:30:59,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:59,004 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:59,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:59,004 INFO L85 PathProgramCache]: Analyzing trace with hash 2104233446, now seen corresponding path program 1 times [2023-12-02 12:30:59,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:30:59,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [121858336] [2023-12-02 12:30:59,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:59,007 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:59,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:30:59,008 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:30:59,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2023-12-02 12:30:59,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:59,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:30:59,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:59,182 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_60| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_68| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_68|)) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_68| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_60|) (_ bv0 1)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_68| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_60| (_ bv0 1)) |c_#valid|))) is different from true [2023-12-02 12:30:59,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:59,191 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:30:59,191 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:30:59,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [121858336] [2023-12-02 12:30:59,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [121858336] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:59,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:59,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:30:59,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760870799] [2023-12-02 12:30:59,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:59,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:30:59,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:30:59,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:30:59,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:59,193 INFO L87 Difference]: Start difference. First operand 464 states and 1258 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:59,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:59,236 INFO L93 Difference]: Finished difference Result 479 states and 1290 transitions. [2023-12-02 12:30:59,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:30:59,237 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-02 12:30:59,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:59,239 INFO L225 Difference]: With dead ends: 479 [2023-12-02 12:30:59,239 INFO L226 Difference]: Without dead ends: 479 [2023-12-02 12:30:59,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:59,240 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:59,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 18 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 59 Unchecked, 0.0s Time] [2023-12-02 12:30:59,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2023-12-02 12:30:59,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 473. [2023-12-02 12:30:59,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 471 states have (on average 2.7197452229299364) internal successors, (1281), 472 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:59,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 1281 transitions. [2023-12-02 12:30:59,249 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 1281 transitions. Word has length 16 [2023-12-02 12:30:59,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:59,249 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 1281 transitions. [2023-12-02 12:30:59,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:59,249 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 1281 transitions. [2023-12-02 12:30:59,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 12:30:59,250 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:59,250 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:59,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Ended with exit code 0 [2023-12-02 12:30:59,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:59,450 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:59,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:59,451 INFO L85 PathProgramCache]: Analyzing trace with hash 2103743336, now seen corresponding path program 2 times [2023-12-02 12:30:59,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:30:59,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1596782486] [2023-12-02 12:30:59,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:30:59,451 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:59,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:30:59,452 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:30:59,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-12-02 12:30:59,521 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 12:30:59,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:30:59,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:30:59,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:59,633 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_69| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_61| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_69|)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_69| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_61| (_ bv0 1))) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_69| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_61|)))) is different from true [2023-12-02 12:30:59,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:59,651 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:30:59,651 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:30:59,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1596782486] [2023-12-02 12:30:59,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1596782486] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:59,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:59,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:30:59,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444727728] [2023-12-02 12:30:59,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:59,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:30:59,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:30:59,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:30:59,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:59,652 INFO L87 Difference]: Start difference. First operand 473 states and 1281 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:59,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:59,703 INFO L93 Difference]: Finished difference Result 491 states and 1320 transitions. [2023-12-02 12:30:59,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:30:59,704 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-02 12:30:59,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:59,706 INFO L225 Difference]: With dead ends: 491 [2023-12-02 12:30:59,706 INFO L226 Difference]: Without dead ends: 491 [2023-12-02 12:30:59,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:30:59,706 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:59,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 18 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 58 Unchecked, 0.0s Time] [2023-12-02 12:30:59,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2023-12-02 12:30:59,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 479. [2023-12-02 12:30:59,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 477 states have (on average 2.710691823899371) internal successors, (1293), 478 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:59,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 1293 transitions. [2023-12-02 12:30:59,716 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 1293 transitions. Word has length 16 [2023-12-02 12:30:59,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:59,716 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 1293 transitions. [2023-12-02 12:30:59,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:30:59,716 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 1293 transitions. [2023-12-02 12:30:59,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 12:30:59,717 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:59,717 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:59,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2023-12-02 12:30:59,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:59,918 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:30:59,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:59,918 INFO L85 PathProgramCache]: Analyzing trace with hash 2103743367, now seen corresponding path program 1 times [2023-12-02 12:30:59,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:30:59,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [50868378] [2023-12-02 12:30:59,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:59,918 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:30:59,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:30:59,919 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:30:59,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2023-12-02 12:31:00,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:31:00,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:00,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:00,113 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_70| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_62| (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_70| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_62|)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_70|) (_ bv0 1)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_70| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_62| (_ bv0 1))))) is different from true [2023-12-02 12:31:00,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:00,128 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:00,128 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:00,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [50868378] [2023-12-02 12:31:00,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [50868378] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:00,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:00,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:00,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882979558] [2023-12-02 12:31:00,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:00,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:00,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:00,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:00,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:00,129 INFO L87 Difference]: Start difference. First operand 479 states and 1293 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:00,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:00,170 INFO L93 Difference]: Finished difference Result 484 states and 1300 transitions. [2023-12-02 12:31:00,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:00,170 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-02 12:31:00,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:00,172 INFO L225 Difference]: With dead ends: 484 [2023-12-02 12:31:00,172 INFO L226 Difference]: Without dead ends: 484 [2023-12-02 12:31:00,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:00,173 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:00,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 18 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 58 Unchecked, 0.0s Time] [2023-12-02 12:31:00,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2023-12-02 12:31:00,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 479. [2023-12-02 12:31:00,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 477 states have (on average 2.710691823899371) internal successors, (1293), 478 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:00,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 1293 transitions. [2023-12-02 12:31:00,182 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 1293 transitions. Word has length 16 [2023-12-02 12:31:00,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:00,182 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 1293 transitions. [2023-12-02 12:31:00,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:00,182 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 1293 transitions. [2023-12-02 12:31:00,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 12:31:00,182 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:00,183 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:00,184 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Ended with exit code 0 [2023-12-02 12:31:00,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:00,383 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:00,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:00,383 INFO L85 PathProgramCache]: Analyzing trace with hash 2090459340, now seen corresponding path program 3 times [2023-12-02 12:31:00,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:00,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [176394393] [2023-12-02 12:31:00,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 12:31:00,384 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:00,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:00,385 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:00,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2023-12-02 12:31:00,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 12:31:00,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:00,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:00,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:00,557 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_71| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_63| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_71|) (_ bv0 1)) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_71| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_63|)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_71| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_63| (_ bv0 1))))) is different from true [2023-12-02 12:31:00,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:00,583 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:00,583 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:00,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [176394393] [2023-12-02 12:31:00,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [176394393] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:00,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:00,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:00,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476915357] [2023-12-02 12:31:00,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:00,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:00,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:00,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:00,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:00,585 INFO L87 Difference]: Start difference. First operand 479 states and 1293 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:00,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:00,633 INFO L93 Difference]: Finished difference Result 495 states and 1321 transitions. [2023-12-02 12:31:00,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:00,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-02 12:31:00,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:00,635 INFO L225 Difference]: With dead ends: 495 [2023-12-02 12:31:00,635 INFO L226 Difference]: Without dead ends: 495 [2023-12-02 12:31:00,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:00,635 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:00,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 18 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 57 Unchecked, 0.0s Time] [2023-12-02 12:31:00,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2023-12-02 12:31:00,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 480. [2023-12-02 12:31:00,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 478 states have (on average 2.709205020920502) internal successors, (1295), 479 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:00,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 1295 transitions. [2023-12-02 12:31:00,643 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 1295 transitions. Word has length 16 [2023-12-02 12:31:00,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:00,643 INFO L495 AbstractCegarLoop]: Abstraction has 480 states and 1295 transitions. [2023-12-02 12:31:00,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:00,643 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 1295 transitions. [2023-12-02 12:31:00,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 12:31:00,644 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:00,644 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:00,646 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Ended with exit code 0 [2023-12-02 12:31:00,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:00,845 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:00,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:00,845 INFO L85 PathProgramCache]: Analyzing trace with hash 2090454597, now seen corresponding path program 2 times [2023-12-02 12:31:00,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:00,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1567998484] [2023-12-02 12:31:00,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:31:00,845 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:00,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:00,846 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:00,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2023-12-02 12:31:00,914 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 12:31:00,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:00,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:00,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:01,016 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_72| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_64| (_ BitVec 32))) (and (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_72| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_64| (_ bv0 1)) |c_#valid|) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_72| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_64|) (_ bv0 1)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_72|) (_ bv0 1)))) is different from true [2023-12-02 12:31:01,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:01,042 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:01,042 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:01,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1567998484] [2023-12-02 12:31:01,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1567998484] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:01,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:01,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:01,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125285311] [2023-12-02 12:31:01,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:01,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:01,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:01,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:01,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:01,043 INFO L87 Difference]: Start difference. First operand 480 states and 1295 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:01,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:01,093 INFO L93 Difference]: Finished difference Result 496 states and 1324 transitions. [2023-12-02 12:31:01,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:01,094 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-02 12:31:01,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:01,095 INFO L225 Difference]: With dead ends: 496 [2023-12-02 12:31:01,095 INFO L226 Difference]: Without dead ends: 496 [2023-12-02 12:31:01,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:01,096 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:01,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 18 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 57 Unchecked, 0.0s Time] [2023-12-02 12:31:01,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2023-12-02 12:31:01,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 479. [2023-12-02 12:31:01,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 477 states have (on average 2.710691823899371) internal successors, (1293), 478 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:01,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 1293 transitions. [2023-12-02 12:31:01,103 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 1293 transitions. Word has length 16 [2023-12-02 12:31:01,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:01,103 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 1293 transitions. [2023-12-02 12:31:01,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:01,104 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 1293 transitions. [2023-12-02 12:31:01,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 12:31:01,104 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:01,104 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:01,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2023-12-02 12:31:01,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:01,305 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:01,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:01,305 INFO L85 PathProgramCache]: Analyzing trace with hash 2090337386, now seen corresponding path program 3 times [2023-12-02 12:31:01,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:01,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1393751033] [2023-12-02 12:31:01,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 12:31:01,305 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:01,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:01,306 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:01,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2023-12-02 12:31:01,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 12:31:01,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:01,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:01,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:01,473 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_73| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_65| (_ BitVec 32))) (and (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_73| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_65|) (_ bv0 1)) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_73|)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_73| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_65| (_ bv0 1)) |c_#valid|))) is different from true [2023-12-02 12:31:01,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:01,497 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:01,498 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:01,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1393751033] [2023-12-02 12:31:01,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1393751033] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:01,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:01,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:01,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634769664] [2023-12-02 12:31:01,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:01,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:01,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:01,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:01,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:01,499 INFO L87 Difference]: Start difference. First operand 479 states and 1293 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:01,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:01,544 INFO L93 Difference]: Finished difference Result 512 states and 1363 transitions. [2023-12-02 12:31:01,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:01,545 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-02 12:31:01,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:01,546 INFO L225 Difference]: With dead ends: 512 [2023-12-02 12:31:01,546 INFO L226 Difference]: Without dead ends: 512 [2023-12-02 12:31:01,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:01,547 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:01,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 18 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 57 Unchecked, 0.0s Time] [2023-12-02 12:31:01,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2023-12-02 12:31:01,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 487. [2023-12-02 12:31:01,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 485 states have (on average 2.703092783505155) internal successors, (1311), 486 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:01,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 1311 transitions. [2023-12-02 12:31:01,559 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 1311 transitions. Word has length 16 [2023-12-02 12:31:01,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:01,559 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 1311 transitions. [2023-12-02 12:31:01,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:01,559 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 1311 transitions. [2023-12-02 12:31:01,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 12:31:01,560 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:01,560 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:01,562 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Ended with exit code 0 [2023-12-02 12:31:01,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:01,760 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:01,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:01,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1763126810, now seen corresponding path program 4 times [2023-12-02 12:31:01,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:01,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [576412179] [2023-12-02 12:31:01,761 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 12:31:01,761 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:01,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:01,762 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:01,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2023-12-02 12:31:01,849 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 12:31:01,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:01,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:01,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:01,937 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_74| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_66| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_74|) (_ bv0 1)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_74| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_66| (_ bv0 1))) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_74| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_66|)))) is different from true [2023-12-02 12:31:01,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:01,969 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:01,969 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:01,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [576412179] [2023-12-02 12:31:01,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [576412179] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:01,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:01,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:01,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200616234] [2023-12-02 12:31:01,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:01,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:01,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:01,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:01,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:01,970 INFO L87 Difference]: Start difference. First operand 487 states and 1311 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:02,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:02,015 INFO L93 Difference]: Finished difference Result 506 states and 1348 transitions. [2023-12-02 12:31:02,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:02,016 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-02 12:31:02,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:02,017 INFO L225 Difference]: With dead ends: 506 [2023-12-02 12:31:02,017 INFO L226 Difference]: Without dead ends: 506 [2023-12-02 12:31:02,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:02,018 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:02,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 18 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 56 Unchecked, 0.0s Time] [2023-12-02 12:31:02,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2023-12-02 12:31:02,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 473. [2023-12-02 12:31:02,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 471 states have (on average 2.715498938428875) internal successors, (1279), 472 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:02,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 1279 transitions. [2023-12-02 12:31:02,025 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 1279 transitions. Word has length 16 [2023-12-02 12:31:02,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:02,026 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 1279 transitions. [2023-12-02 12:31:02,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:02,026 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 1279 transitions. [2023-12-02 12:31:02,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 12:31:02,026 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:02,026 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:02,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Ended with exit code 0 [2023-12-02 12:31:02,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:02,227 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:02,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:02,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1763126531, now seen corresponding path program 3 times [2023-12-02 12:31:02,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:02,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1309865816] [2023-12-02 12:31:02,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 12:31:02,228 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:02,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:02,229 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:02,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2023-12-02 12:31:02,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 12:31:02,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:02,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:02,303 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:02,391 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_67| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_75| (_ BitVec 32))) (and (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_75| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_67| (_ bv0 1))) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_75| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_67|)) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_75|)))) is different from true [2023-12-02 12:31:02,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:02,425 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:02,425 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:02,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1309865816] [2023-12-02 12:31:02,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1309865816] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:02,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:02,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:02,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291373825] [2023-12-02 12:31:02,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:02,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:02,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:02,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:02,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:02,426 INFO L87 Difference]: Start difference. First operand 473 states and 1279 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:02,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:02,475 INFO L93 Difference]: Finished difference Result 487 states and 1304 transitions. [2023-12-02 12:31:02,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:02,476 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-02 12:31:02,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:02,477 INFO L225 Difference]: With dead ends: 487 [2023-12-02 12:31:02,477 INFO L226 Difference]: Without dead ends: 487 [2023-12-02 12:31:02,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:02,478 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:02,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 18 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 56 Unchecked, 0.0s Time] [2023-12-02 12:31:02,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2023-12-02 12:31:02,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 473. [2023-12-02 12:31:02,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 471 states have (on average 2.715498938428875) internal successors, (1279), 472 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:02,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 1279 transitions. [2023-12-02 12:31:02,489 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 1279 transitions. Word has length 16 [2023-12-02 12:31:02,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:02,489 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 1279 transitions. [2023-12-02 12:31:02,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:02,490 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 1279 transitions. [2023-12-02 12:31:02,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 12:31:02,490 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:02,491 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:02,493 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Ended with exit code 0 [2023-12-02 12:31:02,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:02,691 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:02,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:02,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1763118874, now seen corresponding path program 4 times [2023-12-02 12:31:02,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:02,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [357894997] [2023-12-02 12:31:02,692 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 12:31:02,692 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:02,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:02,693 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:02,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2023-12-02 12:31:02,764 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 12:31:02,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:02,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:02,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:02,851 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_68| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_76| (_ BitVec 32))) (and (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_76| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_68| (_ bv0 1))) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_76| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_68|) (_ bv0 1)) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_76|)))) is different from true [2023-12-02 12:31:02,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:02,880 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:02,880 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:02,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [357894997] [2023-12-02 12:31:02,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [357894997] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:02,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:02,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:02,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026026492] [2023-12-02 12:31:02,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:02,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:02,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:02,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:02,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:02,881 INFO L87 Difference]: Start difference. First operand 473 states and 1279 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:02,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:02,927 INFO L93 Difference]: Finished difference Result 484 states and 1297 transitions. [2023-12-02 12:31:02,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:02,927 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-02 12:31:02,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:02,929 INFO L225 Difference]: With dead ends: 484 [2023-12-02 12:31:02,929 INFO L226 Difference]: Without dead ends: 484 [2023-12-02 12:31:02,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:02,929 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:02,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 18 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 56 Unchecked, 0.0s Time] [2023-12-02 12:31:02,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2023-12-02 12:31:02,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 471. [2023-12-02 12:31:02,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 469 states have (on average 2.718550106609808) internal successors, (1275), 470 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:02,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 1275 transitions. [2023-12-02 12:31:02,936 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 1275 transitions. Word has length 16 [2023-12-02 12:31:02,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:02,937 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 1275 transitions. [2023-12-02 12:31:02,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:02,937 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 1275 transitions. [2023-12-02 12:31:02,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 12:31:02,937 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:02,937 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:02,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Ended with exit code 0 [2023-12-02 12:31:03,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:03,138 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:03,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:03,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1762941151, now seen corresponding path program 3 times [2023-12-02 12:31:03,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:03,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1439098699] [2023-12-02 12:31:03,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 12:31:03,139 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:03,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:03,139 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:03,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2023-12-02 12:31:03,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 12:31:03,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:03,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:03,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:03,301 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_69| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_77| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_77|)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_77| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_69| (_ bv0 1))) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_77| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_69|) (_ bv0 1)))) is different from true [2023-12-02 12:31:03,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:03,328 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:03,328 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:03,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1439098699] [2023-12-02 12:31:03,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1439098699] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:03,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:03,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:03,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281393321] [2023-12-02 12:31:03,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:03,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:03,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:03,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:03,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:03,329 INFO L87 Difference]: Start difference. First operand 471 states and 1275 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:03,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:03,370 INFO L93 Difference]: Finished difference Result 484 states and 1298 transitions. [2023-12-02 12:31:03,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:03,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-02 12:31:03,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:03,372 INFO L225 Difference]: With dead ends: 484 [2023-12-02 12:31:03,372 INFO L226 Difference]: Without dead ends: 484 [2023-12-02 12:31:03,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:03,373 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:03,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 18 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 56 Unchecked, 0.0s Time] [2023-12-02 12:31:03,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2023-12-02 12:31:03,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 468. [2023-12-02 12:31:03,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 466 states have (on average 2.723175965665236) internal successors, (1269), 467 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:03,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 1269 transitions. [2023-12-02 12:31:03,381 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 1269 transitions. Word has length 16 [2023-12-02 12:31:03,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:03,381 INFO L495 AbstractCegarLoop]: Abstraction has 468 states and 1269 transitions. [2023-12-02 12:31:03,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:03,381 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 1269 transitions. [2023-12-02 12:31:03,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 12:31:03,381 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:03,381 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:03,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Ended with exit code 0 [2023-12-02 12:31:03,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:03,582 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:03,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:03,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1758355290, now seen corresponding path program 4 times [2023-12-02 12:31:03,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:03,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [878884734] [2023-12-02 12:31:03,583 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 12:31:03,583 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:03,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:03,583 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:03,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2023-12-02 12:31:03,652 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 12:31:03,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:03,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:03,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:03,746 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_70| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_78| (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_78| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_70|)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_78| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_70| (_ bv0 1)) |c_#valid|) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_78|) (_ bv0 1)))) is different from true [2023-12-02 12:31:03,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:03,778 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:03,778 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:03,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [878884734] [2023-12-02 12:31:03,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [878884734] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:03,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:03,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:03,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502575672] [2023-12-02 12:31:03,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:03,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:03,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:03,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:03,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:03,779 INFO L87 Difference]: Start difference. First operand 468 states and 1269 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:03,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:03,822 INFO L93 Difference]: Finished difference Result 488 states and 1307 transitions. [2023-12-02 12:31:03,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:03,822 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-02 12:31:03,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:03,824 INFO L225 Difference]: With dead ends: 488 [2023-12-02 12:31:03,824 INFO L226 Difference]: Without dead ends: 488 [2023-12-02 12:31:03,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:03,824 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:03,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 18 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 56 Unchecked, 0.0s Time] [2023-12-02 12:31:03,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2023-12-02 12:31:03,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 453. [2023-12-02 12:31:03,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 451 states have (on average 2.738359201773836) internal successors, (1235), 452 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:03,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 1235 transitions. [2023-12-02 12:31:03,831 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 1235 transitions. Word has length 16 [2023-12-02 12:31:03,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:03,832 INFO L495 AbstractCegarLoop]: Abstraction has 453 states and 1235 transitions. [2023-12-02 12:31:03,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:03,832 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 1235 transitions. [2023-12-02 12:31:03,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 12:31:03,832 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:03,832 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:03,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Ended with exit code 0 [2023-12-02 12:31:04,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:04,033 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:04,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:04,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1479159128, now seen corresponding path program 1 times [2023-12-02 12:31:04,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:04,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1099540598] [2023-12-02 12:31:04,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:31:04,033 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:04,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:04,034 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:04,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2023-12-02 12:31:04,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:31:04,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 12:31:04,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:04,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:04,107 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:31:04,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:04,135 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:04,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1099540598] [2023-12-02 12:31:04,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1099540598] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:31:04,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [125867520] [2023-12-02 12:31:04,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:31:04,136 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 12:31:04,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 12:31:04,137 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 12:31:04,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (49)] Waiting until timeout for monitored process [2023-12-02 12:31:04,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:31:04,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 12:31:04,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:04,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:04,288 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:31:04,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:04,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [125867520] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:31:04,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218955159] [2023-12-02 12:31:04,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:31:04,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:31:04,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:31:04,305 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:31:04,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-12-02 12:31:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:31:04,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 12:31:04,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:04,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:04,393 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:31:04,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:04,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218955159] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:31:04,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 12:31:04,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2023-12-02 12:31:04,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472284680] [2023-12-02 12:31:04,404 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 12:31:04,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 12:31:04,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:04,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 12:31:04,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-02 12:31:04,405 INFO L87 Difference]: Start difference. First operand 453 states and 1235 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:04,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:04,491 INFO L93 Difference]: Finished difference Result 1137 states and 3109 transitions. [2023-12-02 12:31:04,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 12:31:04,491 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-02 12:31:04,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:04,494 INFO L225 Difference]: With dead ends: 1137 [2023-12-02 12:31:04,494 INFO L226 Difference]: Without dead ends: 1137 [2023-12-02 12:31:04,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-02 12:31:04,495 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 95 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:04,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 70 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 12:31:04,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2023-12-02 12:31:04,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1137. [2023-12-02 12:31:04,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1137 states, 1135 states have (on average 2.73920704845815) internal successors, (3109), 1136 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:04,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 3109 transitions. [2023-12-02 12:31:04,519 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 3109 transitions. Word has length 17 [2023-12-02 12:31:04,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:04,519 INFO L495 AbstractCegarLoop]: Abstraction has 1137 states and 3109 transitions. [2023-12-02 12:31:04,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:04,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 3109 transitions. [2023-12-02 12:31:04,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 12:31:04,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:04,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:04,522 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (49)] Ended with exit code 0 [2023-12-02 12:31:04,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2023-12-02 12:31:04,922 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Ended with exit code 0 [2023-12-02 12:31:05,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:05,121 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:05,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:05,122 INFO L85 PathProgramCache]: Analyzing trace with hash -2112671325, now seen corresponding path program 1 times [2023-12-02 12:31:05,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:05,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [177099463] [2023-12-02 12:31:05,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:31:05,122 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:05,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:05,123 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:05,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2023-12-02 12:31:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:31:05,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:05,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:05,305 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_71| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_79| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_79|)) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_79| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_71|)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_79| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_71| (_ bv0 1))))) is different from true [2023-12-02 12:31:05,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:05,322 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:05,322 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:05,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [177099463] [2023-12-02 12:31:05,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [177099463] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:05,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:05,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:05,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347964719] [2023-12-02 12:31:05,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:05,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:05,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:05,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:05,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:05,323 INFO L87 Difference]: Start difference. First operand 1137 states and 3109 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:05,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:05,372 INFO L93 Difference]: Finished difference Result 1177 states and 3185 transitions. [2023-12-02 12:31:05,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:05,373 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-02 12:31:05,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:05,375 INFO L225 Difference]: With dead ends: 1177 [2023-12-02 12:31:05,375 INFO L226 Difference]: Without dead ends: 1177 [2023-12-02 12:31:05,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:05,376 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:05,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 18 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 58 Unchecked, 0.0s Time] [2023-12-02 12:31:05,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2023-12-02 12:31:05,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 1145. [2023-12-02 12:31:05,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1145 states, 1143 states have (on average 2.73578302712161) internal successors, (3127), 1144 states have internal predecessors, (3127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:05,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 3127 transitions. [2023-12-02 12:31:05,401 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 3127 transitions. Word has length 17 [2023-12-02 12:31:05,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:05,401 INFO L495 AbstractCegarLoop]: Abstraction has 1145 states and 3127 transitions. [2023-12-02 12:31:05,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:05,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 3127 transitions. [2023-12-02 12:31:05,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 12:31:05,402 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:05,402 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:05,404 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Ended with exit code 0 [2023-12-02 12:31:05,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:05,603 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:05,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:05,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1935173305, now seen corresponding path program 1 times [2023-12-02 12:31:05,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:05,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1848926815] [2023-12-02 12:31:05,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:31:05,603 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:05,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:05,604 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:05,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2023-12-02 12:31:05,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:31:05,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:05,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:05,818 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_80| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_72| (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_80| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_72|)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_80| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_72| (_ bv0 1)) |c_#valid|) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_80|) (_ bv0 1)))) is different from true [2023-12-02 12:31:05,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:05,835 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:05,835 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:05,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1848926815] [2023-12-02 12:31:05,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1848926815] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:05,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:05,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:05,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830565187] [2023-12-02 12:31:05,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:05,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:05,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:05,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:05,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:05,837 INFO L87 Difference]: Start difference. First operand 1145 states and 3127 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:05,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:05,887 INFO L93 Difference]: Finished difference Result 1200 states and 3227 transitions. [2023-12-02 12:31:05,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:05,887 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-02 12:31:05,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:05,889 INFO L225 Difference]: With dead ends: 1200 [2023-12-02 12:31:05,889 INFO L226 Difference]: Without dead ends: 1200 [2023-12-02 12:31:05,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:05,890 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:05,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 18 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 58 Unchecked, 0.0s Time] [2023-12-02 12:31:05,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2023-12-02 12:31:05,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 1161. [2023-12-02 12:31:05,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1161 states, 1159 states have (on average 2.729076790336497) internal successors, (3163), 1160 states have internal predecessors, (3163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:05,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1161 states to 1161 states and 3163 transitions. [2023-12-02 12:31:05,907 INFO L78 Accepts]: Start accepts. Automaton has 1161 states and 3163 transitions. Word has length 17 [2023-12-02 12:31:05,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:05,907 INFO L495 AbstractCegarLoop]: Abstraction has 1161 states and 3163 transitions. [2023-12-02 12:31:05,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:05,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1161 states and 3163 transitions. [2023-12-02 12:31:05,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 12:31:05,912 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:05,912 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:05,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2023-12-02 12:31:06,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:06,113 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:06,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:06,113 INFO L85 PathProgramCache]: Analyzing trace with hash -2084190479, now seen corresponding path program 2 times [2023-12-02 12:31:06,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:06,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [507749327] [2023-12-02 12:31:06,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:31:06,114 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:06,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:06,115 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:06,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2023-12-02 12:31:06,192 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 12:31:06,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:06,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:06,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:06,295 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_81| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_73| (_ BitVec 32))) (and (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_81| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_73| (_ bv0 1))) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_81| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_73|)) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_81|)))) is different from true [2023-12-02 12:31:06,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:06,317 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:06,318 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:06,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [507749327] [2023-12-02 12:31:06,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [507749327] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:06,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:06,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:06,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920943399] [2023-12-02 12:31:06,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:06,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:06,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:06,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:06,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:06,319 INFO L87 Difference]: Start difference. First operand 1161 states and 3163 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:06,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:06,364 INFO L93 Difference]: Finished difference Result 1217 states and 3271 transitions. [2023-12-02 12:31:06,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:06,365 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-02 12:31:06,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:06,367 INFO L225 Difference]: With dead ends: 1217 [2023-12-02 12:31:06,367 INFO L226 Difference]: Without dead ends: 1217 [2023-12-02 12:31:06,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:06,368 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:06,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 18 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 57 Unchecked, 0.0s Time] [2023-12-02 12:31:06,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2023-12-02 12:31:06,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1169. [2023-12-02 12:31:06,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1169 states, 1167 states have (on average 2.7240788346186804) internal successors, (3179), 1168 states have internal predecessors, (3179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:06,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1169 states to 1169 states and 3179 transitions. [2023-12-02 12:31:06,386 INFO L78 Accepts]: Start accepts. Automaton has 1169 states and 3179 transitions. Word has length 17 [2023-12-02 12:31:06,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:06,386 INFO L495 AbstractCegarLoop]: Abstraction has 1169 states and 3179 transitions. [2023-12-02 12:31:06,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:06,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1169 states and 3179 transitions. [2023-12-02 12:31:06,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 12:31:06,387 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:06,387 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:06,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2023-12-02 12:31:06,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:06,588 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:06,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:06,588 INFO L85 PathProgramCache]: Analyzing trace with hash -2084199097, now seen corresponding path program 2 times [2023-12-02 12:31:06,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:06,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1611826180] [2023-12-02 12:31:06,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:31:06,588 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:06,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:06,589 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:06,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2023-12-02 12:31:06,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 12:31:06,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:06,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:06,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:06,781 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_82| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_74| (_ BitVec 32))) (and (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_82| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_74| (_ bv0 1))) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_82| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_74|)) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_82|)))) is different from true [2023-12-02 12:31:06,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:06,806 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:06,806 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:06,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1611826180] [2023-12-02 12:31:06,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1611826180] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:06,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:06,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:06,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816331549] [2023-12-02 12:31:06,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:06,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:06,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:06,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:06,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:06,807 INFO L87 Difference]: Start difference. First operand 1169 states and 3179 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:06,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:06,856 INFO L93 Difference]: Finished difference Result 1205 states and 3237 transitions. [2023-12-02 12:31:06,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:06,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-02 12:31:06,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:06,860 INFO L225 Difference]: With dead ends: 1205 [2023-12-02 12:31:06,860 INFO L226 Difference]: Without dead ends: 1205 [2023-12-02 12:31:06,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:06,860 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:06,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 18 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 57 Unchecked, 0.0s Time] [2023-12-02 12:31:06,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2023-12-02 12:31:06,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 1169. [2023-12-02 12:31:06,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1169 states, 1167 states have (on average 2.7240788346186804) internal successors, (3179), 1168 states have internal predecessors, (3179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:06,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1169 states to 1169 states and 3179 transitions. [2023-12-02 12:31:06,879 INFO L78 Accepts]: Start accepts. Automaton has 1169 states and 3179 transitions. Word has length 17 [2023-12-02 12:31:06,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:06,879 INFO L495 AbstractCegarLoop]: Abstraction has 1169 states and 3179 transitions. [2023-12-02 12:31:06,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:06,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1169 states and 3179 transitions. [2023-12-02 12:31:06,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 12:31:06,880 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:06,880 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:06,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (54)] Ended with exit code 0 [2023-12-02 12:31:07,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:07,081 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:07,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:07,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1256525502, now seen corresponding path program 1 times [2023-12-02 12:31:07,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:07,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1408975368] [2023-12-02 12:31:07,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:31:07,081 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:07,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:07,082 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:07,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2023-12-02 12:31:07,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:31:07,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:07,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:07,297 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_83| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_75| (_ BitVec 32))) (and (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_83| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_75| (_ bv0 1))) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_83| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_75|)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_83|) (_ bv0 1)))) is different from true [2023-12-02 12:31:07,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:07,314 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:07,314 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:07,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1408975368] [2023-12-02 12:31:07,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1408975368] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:07,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:07,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:07,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579636307] [2023-12-02 12:31:07,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:07,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:07,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:07,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:07,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:07,315 INFO L87 Difference]: Start difference. First operand 1169 states and 3179 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:07,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:07,365 INFO L93 Difference]: Finished difference Result 1215 states and 3258 transitions. [2023-12-02 12:31:07,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:07,366 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-02 12:31:07,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:07,369 INFO L225 Difference]: With dead ends: 1215 [2023-12-02 12:31:07,369 INFO L226 Difference]: Without dead ends: 1215 [2023-12-02 12:31:07,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:07,370 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:07,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 18 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 58 Unchecked, 0.0s Time] [2023-12-02 12:31:07,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2023-12-02 12:31:07,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1182. [2023-12-02 12:31:07,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 1180 states have (on average 2.716949152542373) internal successors, (3206), 1181 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:07,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 3206 transitions. [2023-12-02 12:31:07,389 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 3206 transitions. Word has length 17 [2023-12-02 12:31:07,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:07,389 INFO L495 AbstractCegarLoop]: Abstraction has 1182 states and 3206 transitions. [2023-12-02 12:31:07,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:07,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 3206 transitions. [2023-12-02 12:31:07,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 12:31:07,390 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:07,390 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:07,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2023-12-02 12:31:07,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:07,591 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:07,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:07,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1269777847, now seen corresponding path program 3 times [2023-12-02 12:31:07,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:07,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1443829197] [2023-12-02 12:31:07,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 12:31:07,591 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:07,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:07,592 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:07,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2023-12-02 12:31:07,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 12:31:07,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:07,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:07,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:07,769 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_84| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_76| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_84|)) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_84| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_76|)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_84| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_76| (_ bv0 1)) |c_#valid|))) is different from true [2023-12-02 12:31:07,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:07,796 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:07,796 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:07,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1443829197] [2023-12-02 12:31:07,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1443829197] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:07,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:07,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:07,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301813425] [2023-12-02 12:31:07,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:07,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:07,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:07,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:07,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:07,797 INFO L87 Difference]: Start difference. First operand 1182 states and 3206 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:07,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:07,851 INFO L93 Difference]: Finished difference Result 1249 states and 3331 transitions. [2023-12-02 12:31:07,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:07,851 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-02 12:31:07,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:07,854 INFO L225 Difference]: With dead ends: 1249 [2023-12-02 12:31:07,854 INFO L226 Difference]: Without dead ends: 1249 [2023-12-02 12:31:07,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:07,854 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:07,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 18 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 57 Unchecked, 0.0s Time] [2023-12-02 12:31:07,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2023-12-02 12:31:07,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1193. [2023-12-02 12:31:07,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1193 states, 1191 states have (on average 2.7120067170445004) internal successors, (3230), 1192 states have internal predecessors, (3230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:07,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 3230 transitions. [2023-12-02 12:31:07,872 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 3230 transitions. Word has length 17 [2023-12-02 12:31:07,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:07,872 INFO L495 AbstractCegarLoop]: Abstraction has 1193 states and 3230 transitions. [2023-12-02 12:31:07,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:07,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 3230 transitions. [2023-12-02 12:31:07,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 12:31:07,873 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:07,873 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:07,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2023-12-02 12:31:08,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:08,073 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:08,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:08,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1269784512, now seen corresponding path program 2 times [2023-12-02 12:31:08,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:08,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [21569141] [2023-12-02 12:31:08,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:31:08,074 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:08,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:08,075 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:08,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2023-12-02 12:31:08,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 12:31:08,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:08,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:08,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:08,278 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_85| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_77| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_85|) (_ bv0 1)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_85| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_77| (_ bv0 1))) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_85| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_77|) (_ bv0 1)))) is different from true [2023-12-02 12:31:08,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:08,304 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:08,304 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:08,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [21569141] [2023-12-02 12:31:08,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [21569141] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:08,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:08,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:08,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371951748] [2023-12-02 12:31:08,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:08,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:08,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:08,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:08,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:08,305 INFO L87 Difference]: Start difference. First operand 1193 states and 3230 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:08,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:08,352 INFO L93 Difference]: Finished difference Result 1242 states and 3314 transitions. [2023-12-02 12:31:08,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:08,353 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-02 12:31:08,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:08,356 INFO L225 Difference]: With dead ends: 1242 [2023-12-02 12:31:08,357 INFO L226 Difference]: Without dead ends: 1242 [2023-12-02 12:31:08,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:08,357 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:08,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 18 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 57 Unchecked, 0.0s Time] [2023-12-02 12:31:08,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2023-12-02 12:31:08,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 1193. [2023-12-02 12:31:08,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1193 states, 1191 states have (on average 2.7120067170445004) internal successors, (3230), 1192 states have internal predecessors, (3230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:08,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 3230 transitions. [2023-12-02 12:31:08,380 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 3230 transitions. Word has length 17 [2023-12-02 12:31:08,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:08,380 INFO L495 AbstractCegarLoop]: Abstraction has 1193 states and 3230 transitions. [2023-12-02 12:31:08,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:08,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 3230 transitions. [2023-12-02 12:31:08,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 12:31:08,381 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:08,382 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:08,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (57)] Ended with exit code 0 [2023-12-02 12:31:08,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:08,582 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:08,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:08,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1596158305, now seen corresponding path program 3 times [2023-12-02 12:31:08,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:08,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [793420168] [2023-12-02 12:31:08,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 12:31:08,583 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:08,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:08,584 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:08,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2023-12-02 12:31:08,675 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 12:31:08,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:08,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:08,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:08,772 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_78| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_86| (_ BitVec 32))) (and (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_86| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_78|) (_ bv0 1)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_86| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_78| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_86|)))) is different from true [2023-12-02 12:31:08,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:08,802 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:08,802 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:08,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [793420168] [2023-12-02 12:31:08,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [793420168] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:08,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:08,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:08,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524885619] [2023-12-02 12:31:08,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:08,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:08,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:08,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:08,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:08,804 INFO L87 Difference]: Start difference. First operand 1193 states and 3230 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:08,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:08,849 INFO L93 Difference]: Finished difference Result 1276 states and 3398 transitions. [2023-12-02 12:31:08,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:08,849 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-02 12:31:08,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:08,852 INFO L225 Difference]: With dead ends: 1276 [2023-12-02 12:31:08,852 INFO L226 Difference]: Without dead ends: 1276 [2023-12-02 12:31:08,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:08,853 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:08,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 18 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 56 Unchecked, 0.0s Time] [2023-12-02 12:31:08,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2023-12-02 12:31:08,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 1179. [2023-12-02 12:31:08,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 1177 states have (on average 2.7196261682242993) internal successors, (3201), 1178 states have internal predecessors, (3201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:08,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 3201 transitions. [2023-12-02 12:31:08,871 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 3201 transitions. Word has length 17 [2023-12-02 12:31:08,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:08,871 INFO L495 AbstractCegarLoop]: Abstraction has 1179 states and 3201 transitions. [2023-12-02 12:31:08,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:08,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 3201 transitions. [2023-12-02 12:31:08,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 12:31:08,872 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:08,872 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:08,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (58)] Ended with exit code 0 [2023-12-02 12:31:09,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:09,072 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:09,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:09,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1596166923, now seen corresponding path program 4 times [2023-12-02 12:31:09,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:09,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1379714348] [2023-12-02 12:31:09,073 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 12:31:09,073 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:09,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:09,074 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:09,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2023-12-02 12:31:09,154 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 12:31:09,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:09,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:09,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:09,250 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_79| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_87| (_ BitVec 32))) (and (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_87| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_79| (_ bv0 1)) |c_#valid|) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_87|) (_ bv0 1)) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_87| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_79|)))) is different from true [2023-12-02 12:31:09,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:09,279 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:09,279 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:09,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1379714348] [2023-12-02 12:31:09,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1379714348] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:09,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:09,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:09,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115019508] [2023-12-02 12:31:09,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:09,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:09,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:09,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:09,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:09,280 INFO L87 Difference]: Start difference. First operand 1179 states and 3201 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:09,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:09,323 INFO L93 Difference]: Finished difference Result 1224 states and 3277 transitions. [2023-12-02 12:31:09,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:09,324 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-02 12:31:09,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:09,326 INFO L225 Difference]: With dead ends: 1224 [2023-12-02 12:31:09,326 INFO L226 Difference]: Without dead ends: 1224 [2023-12-02 12:31:09,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:09,327 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:09,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 18 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 56 Unchecked, 0.0s Time] [2023-12-02 12:31:09,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2023-12-02 12:31:09,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1180. [2023-12-02 12:31:09,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 1178 states have (on average 2.7190152801358236) internal successors, (3203), 1179 states have internal predecessors, (3203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:09,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 3203 transitions. [2023-12-02 12:31:09,343 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 3203 transitions. Word has length 17 [2023-12-02 12:31:09,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:09,343 INFO L495 AbstractCegarLoop]: Abstraction has 1180 states and 3203 transitions. [2023-12-02 12:31:09,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:09,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 3203 transitions. [2023-12-02 12:31:09,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 12:31:09,344 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:09,344 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:09,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2023-12-02 12:31:09,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:09,544 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:09,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:09,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1596404228, now seen corresponding path program 3 times [2023-12-02 12:31:09,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:09,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [457134522] [2023-12-02 12:31:09,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 12:31:09,545 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:09,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:09,546 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:09,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2023-12-02 12:31:09,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 12:31:09,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:09,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:09,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:09,747 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_80| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_88| (_ BitVec 32))) (and (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_88| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_80| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_88|)) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_88| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_80|)))) is different from true [2023-12-02 12:31:09,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:09,780 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:09,780 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:09,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [457134522] [2023-12-02 12:31:09,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [457134522] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:09,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:09,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:09,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507576488] [2023-12-02 12:31:09,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:09,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:09,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:09,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:09,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:09,781 INFO L87 Difference]: Start difference. First operand 1180 states and 3203 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:09,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:09,831 INFO L93 Difference]: Finished difference Result 1221 states and 3272 transitions. [2023-12-02 12:31:09,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:09,831 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-02 12:31:09,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:09,834 INFO L225 Difference]: With dead ends: 1221 [2023-12-02 12:31:09,834 INFO L226 Difference]: Without dead ends: 1221 [2023-12-02 12:31:09,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:09,835 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:09,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 18 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 56 Unchecked, 0.0s Time] [2023-12-02 12:31:09,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2023-12-02 12:31:09,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 1162. [2023-12-02 12:31:09,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 1160 states have (on average 2.728448275862069) internal successors, (3165), 1161 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:09,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 3165 transitions. [2023-12-02 12:31:09,850 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 3165 transitions. Word has length 17 [2023-12-02 12:31:09,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:09,850 INFO L495 AbstractCegarLoop]: Abstraction has 1162 states and 3165 transitions. [2023-12-02 12:31:09,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:09,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 3165 transitions. [2023-12-02 12:31:09,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 12:31:09,851 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:09,851 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:09,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2023-12-02 12:31:10,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:10,052 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:10,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:10,052 INFO L85 PathProgramCache]: Analyzing trace with hash 807246817, now seen corresponding path program 1 times [2023-12-02 12:31:10,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:10,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [26074632] [2023-12-02 12:31:10,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:31:10,052 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:10,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:10,053 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:10,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2023-12-02 12:31:10,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:31:10,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 12:31:10,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:10,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:10,133 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:31:10,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:10,157 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:10,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [26074632] [2023-12-02 12:31:10,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [26074632] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:31:10,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2007920134] [2023-12-02 12:31:10,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:31:10,158 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 12:31:10,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 12:31:10,159 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 12:31:10,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (62)] Waiting until timeout for monitored process [2023-12-02 12:31:10,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:31:10,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 12:31:10,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:10,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:10,331 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:31:10,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:10,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2007920134] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:31:10,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199130961] [2023-12-02 12:31:10,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:31:10,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:31:10,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:31:10,345 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:31:10,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2023-12-02 12:31:10,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:31:10,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 12:31:10,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:10,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:10,444 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:31:10,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:10,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199130961] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:31:10,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 12:31:10,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2023-12-02 12:31:10,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19210413] [2023-12-02 12:31:10,457 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 12:31:10,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 12:31:10,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:10,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 12:31:10,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-02 12:31:10,458 INFO L87 Difference]: Start difference. First operand 1162 states and 3165 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:10,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:10,566 INFO L93 Difference]: Finished difference Result 3034 states and 8164 transitions. [2023-12-02 12:31:10,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 12:31:10,566 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-02 12:31:10,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:10,571 INFO L225 Difference]: With dead ends: 3034 [2023-12-02 12:31:10,572 INFO L226 Difference]: Without dead ends: 3034 [2023-12-02 12:31:10,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-02 12:31:10,572 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 113 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:10,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 74 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 12:31:10,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3034 states. [2023-12-02 12:31:10,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3034 to 3034. [2023-12-02 12:31:10,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3034 states, 3032 states have (on average 2.692612137203166) internal successors, (8164), 3033 states have internal predecessors, (8164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:10,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3034 states to 3034 states and 8164 transitions. [2023-12-02 12:31:10,638 INFO L78 Accepts]: Start accepts. Automaton has 3034 states and 8164 transitions. Word has length 17 [2023-12-02 12:31:10,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:10,638 INFO L495 AbstractCegarLoop]: Abstraction has 3034 states and 8164 transitions. [2023-12-02 12:31:10,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:10,638 INFO L276 IsEmpty]: Start isEmpty. Operand 3034 states and 8164 transitions. [2023-12-02 12:31:10,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 12:31:10,639 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:10,640 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:10,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2023-12-02 12:31:10,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2023-12-02 12:31:11,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (62)] Ended with exit code 0 [2023-12-02 12:31:11,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 12:31:11,242 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:11,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:11,243 INFO L85 PathProgramCache]: Analyzing trace with hash 806727970, now seen corresponding path program 1 times [2023-12-02 12:31:11,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:11,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1096930690] [2023-12-02 12:31:11,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:31:11,243 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:11,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:11,244 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:11,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2023-12-02 12:31:11,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:31:11,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:11,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:11,423 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_81| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_89| (_ BitVec 32))) (and (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_89| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_81| (_ bv0 1))) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_89| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_81|) (_ bv0 1)) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_89|)))) is different from true [2023-12-02 12:31:11,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:11,440 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:11,440 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:11,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1096930690] [2023-12-02 12:31:11,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1096930690] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:11,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:11,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:11,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270183114] [2023-12-02 12:31:11,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:11,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:11,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:11,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:11,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:11,441 INFO L87 Difference]: Start difference. First operand 3034 states and 8164 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:11,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:11,508 INFO L93 Difference]: Finished difference Result 3132 states and 8357 transitions. [2023-12-02 12:31:11,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:11,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-02 12:31:11,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:11,514 INFO L225 Difference]: With dead ends: 3132 [2023-12-02 12:31:11,514 INFO L226 Difference]: Without dead ends: 3132 [2023-12-02 12:31:11,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:11,514 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:11,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 18 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 58 Unchecked, 0.0s Time] [2023-12-02 12:31:11,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3132 states. [2023-12-02 12:31:11,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3132 to 3042. [2023-12-02 12:31:11,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3042 states, 3040 states have (on average 2.6914473684210525) internal successors, (8182), 3041 states have internal predecessors, (8182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:11,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3042 states to 3042 states and 8182 transitions. [2023-12-02 12:31:11,564 INFO L78 Accepts]: Start accepts. Automaton has 3042 states and 8182 transitions. Word has length 17 [2023-12-02 12:31:11,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:11,564 INFO L495 AbstractCegarLoop]: Abstraction has 3042 states and 8182 transitions. [2023-12-02 12:31:11,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:11,564 INFO L276 IsEmpty]: Start isEmpty. Operand 3042 states and 8182 transitions. [2023-12-02 12:31:11,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 12:31:11,565 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:11,565 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:11,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (64)] Ended with exit code 0 [2023-12-02 12:31:11,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:11,766 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:11,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:11,766 INFO L85 PathProgramCache]: Analyzing trace with hash 791534560, now seen corresponding path program 2 times [2023-12-02 12:31:11,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:11,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2058102112] [2023-12-02 12:31:11,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:31:11,766 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:11,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:11,767 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:11,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2023-12-02 12:31:11,872 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 12:31:11,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:11,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:11,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:11,984 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_82| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_90| (_ BitVec 32))) (and (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_90| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_82|) (_ bv0 1)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_90|) (_ bv0 1)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_90| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_82| (_ bv0 1)) |c_#valid|))) is different from true [2023-12-02 12:31:12,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:12,006 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:12,006 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:12,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2058102112] [2023-12-02 12:31:12,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2058102112] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:12,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:12,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:12,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012324341] [2023-12-02 12:31:12,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:12,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:12,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:12,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:12,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:12,008 INFO L87 Difference]: Start difference. First operand 3042 states and 8182 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:12,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:12,060 INFO L93 Difference]: Finished difference Result 3200 states and 8499 transitions. [2023-12-02 12:31:12,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:12,060 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-02 12:31:12,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:12,064 INFO L225 Difference]: With dead ends: 3200 [2023-12-02 12:31:12,064 INFO L226 Difference]: Without dead ends: 3200 [2023-12-02 12:31:12,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:12,065 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:12,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 18 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 57 Unchecked, 0.0s Time] [2023-12-02 12:31:12,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3200 states. [2023-12-02 12:31:12,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3200 to 3050. [2023-12-02 12:31:12,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3050 states, 3048 states have (on average 2.6896325459317585) internal successors, (8198), 3049 states have internal predecessors, (8198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:12,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3050 states to 3050 states and 8198 transitions. [2023-12-02 12:31:12,118 INFO L78 Accepts]: Start accepts. Automaton has 3050 states and 8198 transitions. Word has length 17 [2023-12-02 12:31:12,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:12,118 INFO L495 AbstractCegarLoop]: Abstraction has 3050 states and 8198 transitions. [2023-12-02 12:31:12,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:12,118 INFO L276 IsEmpty]: Start isEmpty. Operand 3050 states and 8198 transitions. [2023-12-02 12:31:12,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 12:31:12,119 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:12,119 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:12,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (65)] Ended with exit code 0 [2023-12-02 12:31:12,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:12,320 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:12,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:12,320 INFO L85 PathProgramCache]: Analyzing trace with hash 791535552, now seen corresponding path program 4 times [2023-12-02 12:31:12,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:12,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1660308247] [2023-12-02 12:31:12,320 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 12:31:12,321 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:12,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:12,321 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:12,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2023-12-02 12:31:12,407 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 12:31:12,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:12,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:12,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:12,515 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_91| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_83| (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_91| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_83|)) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_91|)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_91| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_83| (_ bv0 1))))) is different from true [2023-12-02 12:31:12,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:12,548 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:12,549 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:12,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1660308247] [2023-12-02 12:31:12,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1660308247] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:12,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:12,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:12,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257823243] [2023-12-02 12:31:12,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:12,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:12,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:12,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:12,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:12,550 INFO L87 Difference]: Start difference. First operand 3050 states and 8198 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:12,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:12,604 INFO L93 Difference]: Finished difference Result 3175 states and 8431 transitions. [2023-12-02 12:31:12,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:12,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-02 12:31:12,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:12,611 INFO L225 Difference]: With dead ends: 3175 [2023-12-02 12:31:12,611 INFO L226 Difference]: Without dead ends: 3175 [2023-12-02 12:31:12,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:12,611 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:12,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 18 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 57 Unchecked, 0.0s Time] [2023-12-02 12:31:12,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3175 states. [2023-12-02 12:31:12,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3175 to 3046. [2023-12-02 12:31:12,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3046 states, 3044 states have (on average 2.69053876478318) internal successors, (8190), 3045 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:12,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3046 states to 3046 states and 8190 transitions. [2023-12-02 12:31:12,677 INFO L78 Accepts]: Start accepts. Automaton has 3046 states and 8190 transitions. Word has length 17 [2023-12-02 12:31:12,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:12,677 INFO L495 AbstractCegarLoop]: Abstraction has 3046 states and 8190 transitions. [2023-12-02 12:31:12,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:12,677 INFO L276 IsEmpty]: Start isEmpty. Operand 3046 states and 8190 transitions. [2023-12-02 12:31:12,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 12:31:12,679 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:12,679 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:12,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (66)] Ended with exit code 0 [2023-12-02 12:31:12,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:12,880 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:12,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:12,880 INFO L85 PathProgramCache]: Analyzing trace with hash 379737287, now seen corresponding path program 5 times [2023-12-02 12:31:12,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:12,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1452777502] [2023-12-02 12:31:12,881 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-02 12:31:12,881 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:12,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:12,882 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:12,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2023-12-02 12:31:12,983 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 12:31:12,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:12,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:12,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:13,101 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_92| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_84| (_ BitVec 32))) (and (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_92| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_84| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_92| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_84|)) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_92|)))) is different from true [2023-12-02 12:31:13,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:13,136 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:13,136 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:13,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1452777502] [2023-12-02 12:31:13,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1452777502] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:13,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:13,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:13,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582794082] [2023-12-02 12:31:13,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:13,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:13,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:13,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:13,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:13,138 INFO L87 Difference]: Start difference. First operand 3046 states and 8190 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:13,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:13,193 INFO L93 Difference]: Finished difference Result 3166 states and 8411 transitions. [2023-12-02 12:31:13,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:13,194 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 WARNING: YOUR LOGFILE WAS TOO LONG, SOME LINES IN THE MIDDLE WERE REMOVED. [2023-12-02 12:31:18,236 INFO L93 Difference]: Finished difference Result 5135 states and 13980 transitions. [2023-12-02 12:31:18,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 12:31:18,237 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-02 12:31:18,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:18,244 INFO L225 Difference]: With dead ends: 5135 [2023-12-02 12:31:18,245 INFO L226 Difference]: Without dead ends: 5130 [2023-12-02 12:31:18,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-02 12:31:18,245 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 72 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:18,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 99 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 12:31:18,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5130 states. [2023-12-02 12:31:18,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5130 to 3272. [2023-12-02 12:31:18,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3272 states, 3270 states have (on average 2.7247706422018347) internal successors, (8910), 3271 states have internal predecessors, (8910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:18,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3272 states to 3272 states and 8910 transitions. [2023-12-02 12:31:18,315 INFO L78 Accepts]: Start accepts. Automaton has 3272 states and 8910 transitions. Word has length 18 [2023-12-02 12:31:18,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:18,315 INFO L495 AbstractCegarLoop]: Abstraction has 3272 states and 8910 transitions. [2023-12-02 12:31:18,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:18,315 INFO L276 IsEmpty]: Start isEmpty. Operand 3272 states and 8910 transitions. [2023-12-02 12:31:18,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 12:31:18,316 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:18,316 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:18,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (76)] Ended with exit code 0 [2023-12-02 12:31:18,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:18,517 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:18,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:18,517 INFO L85 PathProgramCache]: Analyzing trace with hash 152369701, now seen corresponding path program 1 times [2023-12-02 12:31:18,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:18,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1133759461] [2023-12-02 12:31:18,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:31:18,518 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:18,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:18,519 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:18,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2023-12-02 12:31:18,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:31:18,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:18,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:18,736 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_93| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_101| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_101|)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_101| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_93| (_ bv0 1))) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_101| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_93|)))) is different from true [2023-12-02 12:31:18,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:18,754 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:18,754 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:18,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1133759461] [2023-12-02 12:31:18,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1133759461] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:18,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:18,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:18,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671412804] [2023-12-02 12:31:18,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:18,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:18,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:18,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:18,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:18,756 INFO L87 Difference]: Start difference. First operand 3272 states and 8910 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:18,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:18,811 INFO L93 Difference]: Finished difference Result 3453 states and 9258 transitions. [2023-12-02 12:31:18,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:18,811 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-02 12:31:18,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:18,819 INFO L225 Difference]: With dead ends: 3453 [2023-12-02 12:31:18,819 INFO L226 Difference]: Without dead ends: 3453 [2023-12-02 12:31:18,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:18,819 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 9 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:18,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 18 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 58 Unchecked, 0.0s Time] [2023-12-02 12:31:18,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3453 states. [2023-12-02 12:31:18,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3453 to 3320. [2023-12-02 12:31:18,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3320 states, 3318 states have (on average 2.7142857142857144) internal successors, (9006), 3319 states have internal predecessors, (9006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:18,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3320 states to 3320 states and 9006 transitions. [2023-12-02 12:31:18,861 INFO L78 Accepts]: Start accepts. Automaton has 3320 states and 9006 transitions. Word has length 18 [2023-12-02 12:31:18,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:18,861 INFO L495 AbstractCegarLoop]: Abstraction has 3320 states and 9006 transitions. [2023-12-02 12:31:18,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:18,861 INFO L276 IsEmpty]: Start isEmpty. Operand 3320 states and 9006 transitions. [2023-12-02 12:31:18,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 12:31:18,862 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:18,862 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:18,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (77)] Forceful destruction successful, exit code 0 [2023-12-02 12:31:19,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:19,062 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:19,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:19,062 INFO L85 PathProgramCache]: Analyzing trace with hash 139177837, now seen corresponding path program 3 times [2023-12-02 12:31:19,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:19,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [952420821] [2023-12-02 12:31:19,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 12:31:19,063 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:19,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:19,064 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:19,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2023-12-02 12:31:19,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 12:31:19,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:19,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:19,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:19,284 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_102| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_94| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_102|)) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_102| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_94|)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_102| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_94| (_ bv0 1))))) is different from true [2023-12-02 12:31:19,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:19,308 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:19,308 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:19,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [952420821] [2023-12-02 12:31:19,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [952420821] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:19,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:19,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:19,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249004110] [2023-12-02 12:31:19,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:19,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:19,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:19,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:19,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:19,309 INFO L87 Difference]: Start difference. First operand 3320 states and 9006 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:19,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:19,377 INFO L93 Difference]: Finished difference Result 3526 states and 9425 transitions. [2023-12-02 12:31:19,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:19,377 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-02 12:31:19,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:19,382 INFO L225 Difference]: With dead ends: 3526 [2023-12-02 12:31:19,382 INFO L226 Difference]: Without dead ends: 3526 [2023-12-02 12:31:19,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:19,383 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:19,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 18 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 57 Unchecked, 0.0s Time] [2023-12-02 12:31:19,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3526 states. [2023-12-02 12:31:19,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3526 to 3364. [2023-12-02 12:31:19,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3364 states, 3362 states have (on average 2.7061273051754906) internal successors, (9098), 3363 states have internal predecessors, (9098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:19,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3364 states to 3364 states and 9098 transitions. [2023-12-02 12:31:19,429 INFO L78 Accepts]: Start accepts. Automaton has 3364 states and 9098 transitions. Word has length 18 [2023-12-02 12:31:19,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:19,430 INFO L495 AbstractCegarLoop]: Abstraction has 3364 states and 9098 transitions. [2023-12-02 12:31:19,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:19,430 INFO L276 IsEmpty]: Start isEmpty. Operand 3364 states and 9098 transitions. [2023-12-02 12:31:19,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 12:31:19,431 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:19,431 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:19,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (78)] Forceful destruction successful, exit code 0 [2023-12-02 12:31:19,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:19,631 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:19,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:19,631 INFO L85 PathProgramCache]: Analyzing trace with hash 139170211, now seen corresponding path program 2 times [2023-12-02 12:31:19,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:19,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [31571447] [2023-12-02 12:31:19,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:31:19,632 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:19,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:19,632 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:19,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2023-12-02 12:31:19,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 12:31:19,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:19,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:19,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:19,829 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_103| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_95| (_ BitVec 32))) (and (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_103| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_95| (_ bv0 1))) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_103| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_95|)) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_103|)))) is different from true [2023-12-02 12:31:19,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:19,852 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:19,852 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:19,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [31571447] [2023-12-02 12:31:19,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [31571447] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:19,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:19,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:19,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341198415] [2023-12-02 12:31:19,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:19,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:19,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:19,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:19,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:19,853 INFO L87 Difference]: Start difference. First operand 3364 states and 9098 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:19,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:19,904 INFO L93 Difference]: Finished difference Result 3503 states and 9356 transitions. [2023-12-02 12:31:19,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:19,905 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-02 12:31:19,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:19,911 INFO L225 Difference]: With dead ends: 3503 [2023-12-02 12:31:19,912 INFO L226 Difference]: Without dead ends: 3503 [2023-12-02 12:31:19,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:19,912 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:19,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 18 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 57 Unchecked, 0.0s Time] [2023-12-02 12:31:19,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3503 states. [2023-12-02 12:31:19,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3503 to 3364. [2023-12-02 12:31:19,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3364 states, 3362 states have (on average 2.7061273051754906) internal successors, (9098), 3363 states have internal predecessors, (9098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:19,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3364 states to 3364 states and 9098 transitions. [2023-12-02 12:31:19,955 INFO L78 Accepts]: Start accepts. Automaton has 3364 states and 9098 transitions. Word has length 18 [2023-12-02 12:31:19,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:19,955 INFO L495 AbstractCegarLoop]: Abstraction has 3364 states and 9098 transitions. [2023-12-02 12:31:19,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:19,955 INFO L276 IsEmpty]: Start isEmpty. Operand 3364 states and 9098 transitions. [2023-12-02 12:31:19,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 12:31:19,956 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:19,956 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:19,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (79)] Forceful destruction successful, exit code 0 [2023-12-02 12:31:20,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:20,156 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:20,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:20,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1702987498, now seen corresponding path program 2 times [2023-12-02 12:31:20,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:20,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1357389674] [2023-12-02 12:31:20,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:31:20,157 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:20,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:20,158 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:20,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2023-12-02 12:31:20,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 12:31:20,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:20,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 12:31:20,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:20,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:20,331 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:20,332 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:20,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1357389674] [2023-12-02 12:31:20,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1357389674] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:20,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:20,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 12:31:20,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277122514] [2023-12-02 12:31:20,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:20,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 12:31:20,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:20,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 12:31:20,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-02 12:31:20,333 INFO L87 Difference]: Start difference. First operand 3364 states and 9098 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:20,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:20,586 INFO L93 Difference]: Finished difference Result 6211 states and 16538 transitions. [2023-12-02 12:31:20,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 12:31:20,587 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-02 12:31:20,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:20,597 INFO L225 Difference]: With dead ends: 6211 [2023-12-02 12:31:20,597 INFO L226 Difference]: Without dead ends: 6206 [2023-12-02 12:31:20,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-12-02 12:31:20,598 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 87 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:20,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 98 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 12:31:20,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6206 states. [2023-12-02 12:31:20,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6206 to 3532. [2023-12-02 12:31:20,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3532 states, 3530 states have (on average 2.723229461756374) internal successors, (9613), 3531 states have internal predecessors, (9613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:20,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3532 states to 3532 states and 9613 transitions. [2023-12-02 12:31:20,661 INFO L78 Accepts]: Start accepts. Automaton has 3532 states and 9613 transitions. Word has length 18 [2023-12-02 12:31:20,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:20,661 INFO L495 AbstractCegarLoop]: Abstraction has 3532 states and 9613 transitions. [2023-12-02 12:31:20,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:20,661 INFO L276 IsEmpty]: Start isEmpty. Operand 3532 states and 9613 transitions. [2023-12-02 12:31:20,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 12:31:20,662 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:20,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:20,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (80)] Ended with exit code 0 [2023-12-02 12:31:20,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:20,862 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:20,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:20,863 INFO L85 PathProgramCache]: Analyzing trace with hash -185394949, now seen corresponding path program 4 times [2023-12-02 12:31:20,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:20,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [911729353] [2023-12-02 12:31:20,863 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 12:31:20,863 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:20,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:20,864 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:20,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2023-12-02 12:31:20,952 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 12:31:20,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:20,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:20,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:21,044 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_104| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_96| (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_104| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_96|)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_104|) (_ bv0 1)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_104| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_96| (_ bv0 1))))) is different from true [2023-12-02 12:31:21,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:21,075 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:21,075 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:21,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [911729353] [2023-12-02 12:31:21,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [911729353] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:21,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:21,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:21,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76920741] [2023-12-02 12:31:21,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:21,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:21,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:21,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:21,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:21,077 INFO L87 Difference]: Start difference. First operand 3532 states and 9613 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:21,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:21,131 INFO L93 Difference]: Finished difference Result 3646 states and 9831 transitions. [2023-12-02 12:31:21,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:21,132 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-02 12:31:21,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:21,136 INFO L225 Difference]: With dead ends: 3646 [2023-12-02 12:31:21,136 INFO L226 Difference]: Without dead ends: 3646 [2023-12-02 12:31:21,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:21,137 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:21,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 18 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 56 Unchecked, 0.0s Time] [2023-12-02 12:31:21,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3646 states. [2023-12-02 12:31:21,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3646 to 3544. [2023-12-02 12:31:21,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3544 states, 3542 states have (on average 2.720779220779221) internal successors, (9637), 3543 states have internal predecessors, (9637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:21,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3544 states to 3544 states and 9637 transitions. [2023-12-02 12:31:21,192 INFO L78 Accepts]: Start accepts. Automaton has 3544 states and 9637 transitions. Word has length 18 [2023-12-02 12:31:21,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:21,193 INFO L495 AbstractCegarLoop]: Abstraction has 3544 states and 9637 transitions. [2023-12-02 12:31:21,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:21,193 INFO L276 IsEmpty]: Start isEmpty. Operand 3544 states and 9637 transitions. [2023-12-02 12:31:21,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 12:31:21,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:21,194 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:21,196 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (81)] Ended with exit code 0 [2023-12-02 12:31:21,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:21,394 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:21,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:21,395 INFO L85 PathProgramCache]: Analyzing trace with hash -185662045, now seen corresponding path program 3 times [2023-12-02 12:31:21,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:21,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [912444293] [2023-12-02 12:31:21,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 12:31:21,395 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:21,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:21,396 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:21,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2023-12-02 12:31:21,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 12:31:21,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:21,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:21,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:21,582 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_97| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_105| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_105|) (_ bv0 1)) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_105| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_97|)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_105| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_97| (_ bv0 1)) |c_#valid|))) is different from true [2023-12-02 12:31:21,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:21,615 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:21,615 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:21,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [912444293] [2023-12-02 12:31:21,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [912444293] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:21,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:21,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:21,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799881175] [2023-12-02 12:31:21,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:21,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:21,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:21,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:21,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:21,617 INFO L87 Difference]: Start difference. First operand 3544 states and 9637 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:21,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:21,671 INFO L93 Difference]: Finished difference Result 3621 states and 9771 transitions. [2023-12-02 12:31:21,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:21,672 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-02 12:31:21,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:21,676 INFO L225 Difference]: With dead ends: 3621 [2023-12-02 12:31:21,676 INFO L226 Difference]: Without dead ends: 3621 [2023-12-02 12:31:21,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:21,677 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:21,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 18 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 56 Unchecked, 0.0s Time] [2023-12-02 12:31:21,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3621 states. [2023-12-02 12:31:21,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3621 to 3524. [2023-12-02 12:31:21,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3524 states, 3522 states have (on average 2.724872231686542) internal successors, (9597), 3523 states have internal predecessors, (9597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:21,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3524 states to 3524 states and 9597 transitions. [2023-12-02 12:31:21,721 INFO L78 Accepts]: Start accepts. Automaton has 3524 states and 9597 transitions. Word has length 18 [2023-12-02 12:31:21,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:21,721 INFO L495 AbstractCegarLoop]: Abstraction has 3524 states and 9597 transitions. [2023-12-02 12:31:21,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:21,722 INFO L276 IsEmpty]: Start isEmpty. Operand 3524 states and 9597 transitions. [2023-12-02 12:31:21,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 12:31:21,722 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:21,722 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:21,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (82)] Forceful destruction successful, exit code 0 [2023-12-02 12:31:21,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:21,923 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:21,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:21,923 INFO L85 PathProgramCache]: Analyzing trace with hash -2112466944, now seen corresponding path program 3 times [2023-12-02 12:31:21,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:21,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [719951915] [2023-12-02 12:31:21,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 12:31:21,924 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:21,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:21,924 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:21,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2023-12-02 12:31:21,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 12:31:21,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:21,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 12:31:21,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:22,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:22,038 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:22,038 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:22,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [719951915] [2023-12-02 12:31:22,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [719951915] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:22,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:22,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 12:31:22,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740185483] [2023-12-02 12:31:22,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:22,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 12:31:22,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:22,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 12:31:22,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 12:31:22,040 INFO L87 Difference]: Start difference. First operand 3524 states and 9597 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:22,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:22,351 INFO L93 Difference]: Finished difference Result 8556 states and 23307 transitions. [2023-12-02 12:31:22,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 12:31:22,352 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-02 12:31:22,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:22,369 INFO L225 Difference]: With dead ends: 8556 [2023-12-02 12:31:22,369 INFO L226 Difference]: Without dead ends: 8551 [2023-12-02 12:31:22,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2023-12-02 12:31:22,369 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 124 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:22,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 98 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 12:31:22,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8551 states. [2023-12-02 12:31:22,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8551 to 3857. [2023-12-02 12:31:22,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3857 states, 3855 states have (on average 2.757976653696498) internal successors, (10632), 3856 states have internal predecessors, (10632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:22,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3857 states to 3857 states and 10632 transitions. [2023-12-02 12:31:22,461 INFO L78 Accepts]: Start accepts. Automaton has 3857 states and 10632 transitions. Word has length 18 [2023-12-02 12:31:22,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:22,461 INFO L495 AbstractCegarLoop]: Abstraction has 3857 states and 10632 transitions. [2023-12-02 12:31:22,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:22,461 INFO L276 IsEmpty]: Start isEmpty. Operand 3857 states and 10632 transitions. [2023-12-02 12:31:22,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 12:31:22,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:22,462 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:22,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (83)] Ended with exit code 0 [2023-12-02 12:31:22,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:22,663 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:22,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:22,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1198181154, now seen corresponding path program 4 times [2023-12-02 12:31:22,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:22,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [779774965] [2023-12-02 12:31:22,663 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 12:31:22,663 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:22,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:22,664 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:22,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2023-12-02 12:31:22,739 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 12:31:22,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:22,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 12:31:22,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:22,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:22,783 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:22,784 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:22,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [779774965] [2023-12-02 12:31:22,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [779774965] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:22,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:22,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 12:31:22,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610872409] [2023-12-02 12:31:22,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:22,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 12:31:22,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:22,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 12:31:22,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 12:31:22,785 INFO L87 Difference]: Start difference. First operand 3857 states and 10632 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:22,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:22,993 INFO L93 Difference]: Finished difference Result 6446 states and 17393 transitions. [2023-12-02 12:31:22,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 12:31:22,994 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-02 12:31:22,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:23,003 INFO L225 Difference]: With dead ends: 6446 [2023-12-02 12:31:23,003 INFO L226 Difference]: Without dead ends: 6439 [2023-12-02 12:31:23,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-12-02 12:31:23,003 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 90 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:23,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 95 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 12:31:23,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6439 states. [2023-12-02 12:31:23,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6439 to 3711. [2023-12-02 12:31:23,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3711 states, 3709 states have (on average 2.738743596656781) internal successors, (10158), 3710 states have internal predecessors, (10158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:23,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3711 states to 3711 states and 10158 transitions. [2023-12-02 12:31:23,068 INFO L78 Accepts]: Start accepts. Automaton has 3711 states and 10158 transitions. Word has length 18 [2023-12-02 12:31:23,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:23,069 INFO L495 AbstractCegarLoop]: Abstraction has 3711 states and 10158 transitions. [2023-12-02 12:31:23,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:23,069 INFO L276 IsEmpty]: Start isEmpty. Operand 3711 states and 10158 transitions. [2023-12-02 12:31:23,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 12:31:23,070 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:23,070 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:23,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (84)] Ended with exit code 0 [2023-12-02 12:31:23,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:23,271 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:23,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:23,271 INFO L85 PathProgramCache]: Analyzing trace with hash -282392795, now seen corresponding path program 1 times [2023-12-02 12:31:23,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:23,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [737180836] [2023-12-02 12:31:23,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:31:23,272 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:23,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:23,273 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:23,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (85)] Waiting until timeout for monitored process [2023-12-02 12:31:23,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:31:23,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:23,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:23,484 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_106| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_98| (_ BitVec 32))) (and (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_106| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_98|) (_ bv0 1)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_106| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_98| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_106|)))) is different from true [2023-12-02 12:31:23,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:23,500 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:23,500 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:23,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [737180836] [2023-12-02 12:31:23,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [737180836] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:23,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:23,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:23,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132444500] [2023-12-02 12:31:23,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:23,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:23,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:23,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:23,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:23,501 INFO L87 Difference]: Start difference. First operand 3711 states and 10158 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:23,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:23,561 INFO L93 Difference]: Finished difference Result 3865 states and 10467 transitions. [2023-12-02 12:31:23,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:23,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-02 12:31:23,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:23,567 INFO L225 Difference]: With dead ends: 3865 [2023-12-02 12:31:23,567 INFO L226 Difference]: Without dead ends: 3865 [2023-12-02 12:31:23,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:23,568 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 9 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:23,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 18 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 58 Unchecked, 0.0s Time] [2023-12-02 12:31:23,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3865 states. [2023-12-02 12:31:23,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3865 to 3767. [2023-12-02 12:31:23,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3767 states, 3765 states have (on average 2.7312084993359895) internal successors, (10283), 3766 states have internal predecessors, (10283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:23,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3767 states to 3767 states and 10283 transitions. [2023-12-02 12:31:23,618 INFO L78 Accepts]: Start accepts. Automaton has 3767 states and 10283 transitions. Word has length 18 [2023-12-02 12:31:23,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:23,618 INFO L495 AbstractCegarLoop]: Abstraction has 3767 states and 10283 transitions. [2023-12-02 12:31:23,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:23,618 INFO L276 IsEmpty]: Start isEmpty. Operand 3767 states and 10283 transitions. [2023-12-02 12:31:23,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 12:31:23,619 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:23,619 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:23,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (85)] Forceful destruction successful, exit code 0 [2023-12-02 12:31:23,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:23,820 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:23,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:23,820 INFO L85 PathProgramCache]: Analyzing trace with hash -297586205, now seen corresponding path program 2 times [2023-12-02 12:31:23,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:23,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1105862539] [2023-12-02 12:31:23,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:31:23,820 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:23,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:23,821 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:23,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2023-12-02 12:31:23,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 12:31:23,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:23,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:23,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:24,014 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_107| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_99| (_ BitVec 32))) (and (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_107| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_99| (_ bv0 1))) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_107| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_99|)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_107|) (_ bv0 1)))) is different from true [2023-12-02 12:31:24,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:24,037 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:24,037 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:24,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1105862539] [2023-12-02 12:31:24,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1105862539] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:24,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:24,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:24,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999992365] [2023-12-02 12:31:24,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:24,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:24,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:24,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:24,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:24,039 INFO L87 Difference]: Start difference. First operand 3767 states and 10283 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:24,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:24,090 INFO L93 Difference]: Finished difference Result 3973 states and 10700 transitions. [2023-12-02 12:31:24,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:24,090 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-02 12:31:24,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:24,096 INFO L225 Difference]: With dead ends: 3973 [2023-12-02 12:31:24,096 INFO L226 Difference]: Without dead ends: 3973 [2023-12-02 12:31:24,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:24,097 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:24,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 18 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 57 Unchecked, 0.0s Time] [2023-12-02 12:31:24,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3973 states. [2023-12-02 12:31:24,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3973 to 3811. [2023-12-02 12:31:24,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3811 states, 3809 states have (on average 2.7238120241533212) internal successors, (10375), 3810 states have internal predecessors, (10375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:24,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3811 states to 3811 states and 10375 transitions. [2023-12-02 12:31:24,149 INFO L78 Accepts]: Start accepts. Automaton has 3811 states and 10375 transitions. Word has length 18 [2023-12-02 12:31:24,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:24,149 INFO L495 AbstractCegarLoop]: Abstraction has 3811 states and 10375 transitions. [2023-12-02 12:31:24,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:24,150 INFO L276 IsEmpty]: Start isEmpty. Operand 3811 states and 10375 transitions. [2023-12-02 12:31:24,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 12:31:24,150 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:24,150 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:24,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (86)] Forceful destruction successful, exit code 0 [2023-12-02 12:31:24,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:24,351 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:24,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:24,351 INFO L85 PathProgramCache]: Analyzing trace with hash -297584221, now seen corresponding path program 4 times [2023-12-02 12:31:24,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:24,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1706242936] [2023-12-02 12:31:24,351 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 12:31:24,352 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:24,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:24,352 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:24,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2023-12-02 12:31:24,441 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 12:31:24,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:24,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:24,444 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:24,559 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_100| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_108| (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_108| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_100|)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_108|) (_ bv0 1)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_108| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_100| (_ bv0 1))))) is different from true [2023-12-02 12:31:24,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:24,584 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:24,584 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:24,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1706242936] [2023-12-02 12:31:24,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1706242936] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:24,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:24,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:24,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237608792] [2023-12-02 12:31:24,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:24,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:24,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:24,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:24,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:24,586 INFO L87 Difference]: Start difference. First operand 3811 states and 10375 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:24,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:24,641 INFO L93 Difference]: Finished difference Result 3978 states and 10689 transitions. [2023-12-02 12:31:24,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:24,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-02 12:31:24,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:24,646 INFO L225 Difference]: With dead ends: 3978 [2023-12-02 12:31:24,646 INFO L226 Difference]: Without dead ends: 3978 [2023-12-02 12:31:24,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:24,647 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:24,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 18 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 57 Unchecked, 0.0s Time] [2023-12-02 12:31:24,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3978 states. [2023-12-02 12:31:24,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3978 to 3811. [2023-12-02 12:31:24,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3811 states, 3809 states have (on average 2.7238120241533212) internal successors, (10375), 3810 states have internal predecessors, (10375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:24,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3811 states to 3811 states and 10375 transitions. [2023-12-02 12:31:24,701 INFO L78 Accepts]: Start accepts. Automaton has 3811 states and 10375 transitions. Word has length 18 [2023-12-02 12:31:24,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:24,701 INFO L495 AbstractCegarLoop]: Abstraction has 3811 states and 10375 transitions. [2023-12-02 12:31:24,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:24,701 INFO L276 IsEmpty]: Start isEmpty. Operand 3811 states and 10375 transitions. [2023-12-02 12:31:24,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 12:31:24,702 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:24,702 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:24,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (87)] Ended with exit code 0 [2023-12-02 12:31:24,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:24,903 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:24,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:24,903 INFO L85 PathProgramCache]: Analyzing trace with hash -708399445, now seen corresponding path program 5 times [2023-12-02 12:31:24,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:24,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1674718735] [2023-12-02 12:31:24,903 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-02 12:31:24,903 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:24,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:24,904 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:24,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2023-12-02 12:31:25,009 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 12:31:25,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:25,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:25,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:25,126 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_101| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_109| (_ BitVec 32))) (and (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_109| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_101| (_ bv0 1)) |c_#valid|) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_109|) (_ bv0 1)) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_109| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_101|)))) is different from true [2023-12-02 12:31:25,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:25,159 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:25,159 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:25,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1674718735] [2023-12-02 12:31:25,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1674718735] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:25,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:25,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:25,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080126319] [2023-12-02 12:31:25,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:25,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:25,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:25,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:25,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:25,160 INFO L87 Difference]: Start difference. First operand 3811 states and 10375 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:25,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:25,219 INFO L93 Difference]: Finished difference Result 4105 states and 10974 transitions. [2023-12-02 12:31:25,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:25,220 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-02 12:31:25,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:25,225 INFO L225 Difference]: With dead ends: 4105 [2023-12-02 12:31:25,225 INFO L226 Difference]: Without dead ends: 4105 [2023-12-02 12:31:25,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:25,226 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:25,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 18 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 56 Unchecked, 0.0s Time] [2023-12-02 12:31:25,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4105 states. [2023-12-02 12:31:25,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4105 to 3817. [2023-12-02 12:31:25,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3817 states, 3815 states have (on average 2.724246395806029) internal successors, (10393), 3816 states have internal predecessors, (10393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:25,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3817 states to 3817 states and 10393 transitions. [2023-12-02 12:31:25,275 INFO L78 Accepts]: Start accepts. Automaton has 3817 states and 10393 transitions. Word has length 18 [2023-12-02 12:31:25,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:25,275 INFO L495 AbstractCegarLoop]: Abstraction has 3817 states and 10393 transitions. [2023-12-02 12:31:25,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:25,275 INFO L276 IsEmpty]: Start isEmpty. Operand 3817 states and 10393 transitions. [2023-12-02 12:31:25,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 12:31:25,276 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:25,276 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:25,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (88)] Forceful destruction successful, exit code 0 [2023-12-02 12:31:25,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:25,477 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:25,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:25,477 INFO L85 PathProgramCache]: Analyzing trace with hash -708407071, now seen corresponding path program 5 times [2023-12-02 12:31:25,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:25,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [113066229] [2023-12-02 12:31:25,477 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-02 12:31:25,477 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:25,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:25,478 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:25,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (89)] Waiting until timeout for monitored process [2023-12-02 12:31:25,568 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 12:31:25,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:25,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:25,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:25,671 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_110| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_102| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_110|)) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_110| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_102|) (_ bv0 1)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_110| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_102| (_ bv0 1)) |c_#valid|))) is different from true [2023-12-02 12:31:25,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:25,712 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:25,712 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:25,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [113066229] [2023-12-02 12:31:25,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [113066229] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:25,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:25,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:25,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224786503] [2023-12-02 12:31:25,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:25,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:25,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:25,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:25,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:25,713 INFO L87 Difference]: Start difference. First operand 3817 states and 10393 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:25,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:25,767 INFO L93 Difference]: Finished difference Result 3959 states and 10657 transitions. [2023-12-02 12:31:25,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:25,768 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-02 12:31:25,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:25,773 INFO L225 Difference]: With dead ends: 3959 [2023-12-02 12:31:25,773 INFO L226 Difference]: Without dead ends: 3959 [2023-12-02 12:31:25,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:25,773 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:25,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 18 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 56 Unchecked, 0.0s Time] [2023-12-02 12:31:25,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3959 states. [2023-12-02 12:31:25,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3959 to 3835. [2023-12-02 12:31:25,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3835 states, 3833 states have (on average 2.7208452908948604) internal successors, (10429), 3834 states have internal predecessors, (10429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:25,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3835 states to 3835 states and 10429 transitions. [2023-12-02 12:31:25,821 INFO L78 Accepts]: Start accepts. Automaton has 3835 states and 10429 transitions. Word has length 18 [2023-12-02 12:31:25,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:25,821 INFO L495 AbstractCegarLoop]: Abstraction has 3835 states and 10429 transitions. [2023-12-02 12:31:25,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:25,822 INFO L276 IsEmpty]: Start isEmpty. Operand 3835 states and 10429 transitions. [2023-12-02 12:31:25,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 12:31:25,823 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:25,823 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:25,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (89)] Ended with exit code 0 [2023-12-02 12:31:26,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:26,023 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:26,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:26,023 INFO L85 PathProgramCache]: Analyzing trace with hash -708613655, now seen corresponding path program 3 times [2023-12-02 12:31:26,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:26,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1560317679] [2023-12-02 12:31:26,024 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 12:31:26,024 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:26,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:26,025 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:26,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (90)] Waiting until timeout for monitored process [2023-12-02 12:31:26,113 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 12:31:26,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:26,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:26,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:26,202 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_111| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_103| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_111|) (_ bv0 1)) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_111| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_103|)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_111| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_103| (_ bv0 1))))) is different from true [2023-12-02 12:31:26,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:26,230 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:26,230 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:26,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1560317679] [2023-12-02 12:31:26,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1560317679] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:26,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:26,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:26,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872093972] [2023-12-02 12:31:26,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:26,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:26,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:26,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:26,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:26,231 INFO L87 Difference]: Start difference. First operand 3835 states and 10429 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:26,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:26,284 INFO L93 Difference]: Finished difference Result 4054 states and 10871 transitions. [2023-12-02 12:31:26,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:26,284 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-02 12:31:26,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:26,290 INFO L225 Difference]: With dead ends: 4054 [2023-12-02 12:31:26,290 INFO L226 Difference]: Without dead ends: 4054 [2023-12-02 12:31:26,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:26,291 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:26,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 18 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 56 Unchecked, 0.0s Time] [2023-12-02 12:31:26,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4054 states. [2023-12-02 12:31:26,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4054 to 3709. [2023-12-02 12:31:26,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3709 states, 3707 states have (on average 2.7426490423523067) internal successors, (10167), 3708 states have internal predecessors, (10167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:26,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3709 states to 3709 states and 10167 transitions. [2023-12-02 12:31:26,340 INFO L78 Accepts]: Start accepts. Automaton has 3709 states and 10167 transitions. Word has length 18 [2023-12-02 12:31:26,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:26,341 INFO L495 AbstractCegarLoop]: Abstraction has 3709 states and 10167 transitions. [2023-12-02 12:31:26,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:26,341 INFO L276 IsEmpty]: Start isEmpty. Operand 3709 states and 10167 transitions. [2023-12-02 12:31:26,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 12:31:26,342 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:26,342 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:26,344 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (90)] Ended with exit code 0 [2023-12-02 12:31:26,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:26,542 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:26,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:26,543 INFO L85 PathProgramCache]: Analyzing trace with hash 2058700557, now seen corresponding path program 6 times [2023-12-02 12:31:26,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:26,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1758475741] [2023-12-02 12:31:26,543 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-02 12:31:26,543 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:26,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:26,544 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:26,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (91)] Waiting until timeout for monitored process [2023-12-02 12:31:26,630 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-12-02 12:31:26,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:26,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:26,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:26,729 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_112| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_104| (_ BitVec 32))) (and (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_112| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_104| (_ bv0 1))) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_112| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_104|) (_ bv0 1)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_112|) (_ bv0 1)))) is different from true [2023-12-02 12:31:26,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:26,766 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:26,767 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:26,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1758475741] [2023-12-02 12:31:26,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1758475741] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:26,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:26,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:26,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97662805] [2023-12-02 12:31:26,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:26,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:26,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:26,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:26,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:26,768 INFO L87 Difference]: Start difference. First operand 3709 states and 10167 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:26,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:26,820 INFO L93 Difference]: Finished difference Result 3856 states and 10450 transitions. [2023-12-02 12:31:26,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:26,821 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-02 12:31:26,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:26,826 INFO L225 Difference]: With dead ends: 3856 [2023-12-02 12:31:26,826 INFO L226 Difference]: Without dead ends: 3856 [2023-12-02 12:31:26,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:26,836 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:26,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 18 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 55 Unchecked, 0.0s Time] [2023-12-02 12:31:26,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3856 states. [2023-12-02 12:31:26,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3856 to 3680. [2023-12-02 12:31:26,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3680 states, 3678 states have (on average 2.7479608482871125) internal successors, (10107), 3679 states have internal predecessors, (10107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:26,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3680 states to 3680 states and 10107 transitions. [2023-12-02 12:31:26,905 INFO L78 Accepts]: Start accepts. Automaton has 3680 states and 10107 transitions. Word has length 18 [2023-12-02 12:31:26,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:26,905 INFO L495 AbstractCegarLoop]: Abstraction has 3680 states and 10107 transitions. [2023-12-02 12:31:26,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:26,905 INFO L276 IsEmpty]: Start isEmpty. Operand 3680 states and 10107 transitions. [2023-12-02 12:31:26,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 12:31:26,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:26,906 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:26,908 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (91)] Ended with exit code 0 [2023-12-02 12:31:27,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:27,107 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:27,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:27,107 INFO L85 PathProgramCache]: Analyzing trace with hash 2058433461, now seen corresponding path program 6 times [2023-12-02 12:31:27,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:27,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1229844107] [2023-12-02 12:31:27,108 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-02 12:31:27,108 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:27,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:27,109 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:27,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (92)] Waiting until timeout for monitored process [2023-12-02 12:31:27,216 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-12-02 12:31:27,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:27,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:27,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:27,324 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_113| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_105| (_ BitVec 32))) (and (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_113| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_105|) (_ bv0 1)) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_113|)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_113| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_105| (_ bv0 1)) |c_#valid|))) is different from true [2023-12-02 12:31:27,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:27,365 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:27,365 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:27,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1229844107] [2023-12-02 12:31:27,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1229844107] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:27,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:27,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:27,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264777576] [2023-12-02 12:31:27,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:27,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:27,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:27,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:27,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:27,366 INFO L87 Difference]: Start difference. First operand 3680 states and 10107 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:27,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:27,423 INFO L93 Difference]: Finished difference Result 3749 states and 10224 transitions. [2023-12-02 12:31:27,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:27,423 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-02 12:31:27,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:27,428 INFO L225 Difference]: With dead ends: 3749 [2023-12-02 12:31:27,428 INFO L226 Difference]: Without dead ends: 3749 [2023-12-02 12:31:27,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:27,429 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:27,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 18 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 55 Unchecked, 0.0s Time] [2023-12-02 12:31:27,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3749 states. [2023-12-02 12:31:27,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3749 to 3682. [2023-12-02 12:31:27,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3682 states, 3680 states have (on average 2.747554347826087) internal successors, (10111), 3681 states have internal predecessors, (10111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:27,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3682 states to 3682 states and 10111 transitions. [2023-12-02 12:31:27,475 INFO L78 Accepts]: Start accepts. Automaton has 3682 states and 10111 transitions. Word has length 18 [2023-12-02 12:31:27,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:27,475 INFO L495 AbstractCegarLoop]: Abstraction has 3682 states and 10111 transitions. [2023-12-02 12:31:27,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:27,475 INFO L276 IsEmpty]: Start isEmpty. Operand 3682 states and 10111 transitions. [2023-12-02 12:31:27,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 12:31:27,476 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:27,476 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:27,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (92)] Forceful destruction successful, exit code 0 [2023-12-02 12:31:27,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:27,676 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:27,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:27,677 INFO L85 PathProgramCache]: Analyzing trace with hash 2051077037, now seen corresponding path program 4 times [2023-12-02 12:31:27,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:27,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2130182652] [2023-12-02 12:31:27,677 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 12:31:27,677 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:27,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:27,678 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:27,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (93)] Waiting until timeout for monitored process [2023-12-02 12:31:27,768 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 12:31:27,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:27,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:27,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:27,855 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_114| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_106| (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_114| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_106|)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_114| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_106| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_114|)))) is different from true [2023-12-02 12:31:27,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:27,890 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:27,890 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:27,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2130182652] [2023-12-02 12:31:27,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2130182652] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:27,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:27,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:27,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624979311] [2023-12-02 12:31:27,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:27,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:27,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:27,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:27,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:27,891 INFO L87 Difference]: Start difference. First operand 3682 states and 10111 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:27,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:27,943 INFO L93 Difference]: Finished difference Result 3745 states and 10230 transitions. [2023-12-02 12:31:27,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:27,943 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-02 12:31:27,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:27,948 INFO L225 Difference]: With dead ends: 3745 [2023-12-02 12:31:27,948 INFO L226 Difference]: Without dead ends: 3745 [2023-12-02 12:31:27,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:27,949 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:27,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 18 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 55 Unchecked, 0.0s Time] [2023-12-02 12:31:27,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3745 states. [2023-12-02 12:31:27,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3745 to 3611. [2023-12-02 12:31:27,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3611 states, 3609 states have (on average 2.7575505680243837) internal successors, (9952), 3610 states have internal predecessors, (9952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:27,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3611 states to 3611 states and 9952 transitions. [2023-12-02 12:31:27,995 INFO L78 Accepts]: Start accepts. Automaton has 3611 states and 9952 transitions. Word has length 18 [2023-12-02 12:31:27,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:27,995 INFO L495 AbstractCegarLoop]: Abstraction has 3611 states and 9952 transitions. [2023-12-02 12:31:27,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:27,995 INFO L276 IsEmpty]: Start isEmpty. Operand 3611 states and 9952 transitions. [2023-12-02 12:31:27,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 12:31:27,996 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:27,996 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:27,997 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (93)] Ended with exit code 0 [2023-12-02 12:31:28,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:28,196 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:28,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:28,197 INFO L85 PathProgramCache]: Analyzing trace with hash -761236091, now seen corresponding path program 5 times [2023-12-02 12:31:28,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:28,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1608509284] [2023-12-02 12:31:28,197 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-02 12:31:28,197 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:28,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:28,198 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:28,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (94)] Waiting until timeout for monitored process [2023-12-02 12:31:28,289 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 12:31:28,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:28,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:28,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:28,408 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_115| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_107| (_ BitVec 32))) (and (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_115| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_107| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_115| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_107|)) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_115|)))) is different from true [2023-12-02 12:31:28,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:28,430 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:28,430 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:28,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1608509284] [2023-12-02 12:31:28,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1608509284] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:28,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:28,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:28,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700380935] [2023-12-02 12:31:28,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:28,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:28,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:28,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:28,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:28,431 INFO L87 Difference]: Start difference. First operand 3611 states and 9952 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:28,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:28,485 INFO L93 Difference]: Finished difference Result 3767 states and 10267 transitions. [2023-12-02 12:31:28,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:28,485 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-02 12:31:28,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:28,490 INFO L225 Difference]: With dead ends: 3767 [2023-12-02 12:31:28,491 INFO L226 Difference]: Without dead ends: 3767 [2023-12-02 12:31:28,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:28,491 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:28,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 18 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 57 Unchecked, 0.0s Time] [2023-12-02 12:31:28,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3767 states. [2023-12-02 12:31:28,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3767 to 3623. [2023-12-02 12:31:28,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3623 states, 3621 states have (on average 2.755868544600939) internal successors, (9979), 3622 states have internal predecessors, (9979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:28,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3623 states to 3623 states and 9979 transitions. [2023-12-02 12:31:28,554 INFO L78 Accepts]: Start accepts. Automaton has 3623 states and 9979 transitions. Word has length 18 [2023-12-02 12:31:28,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:28,554 INFO L495 AbstractCegarLoop]: Abstraction has 3623 states and 9979 transitions. [2023-12-02 12:31:28,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:28,554 INFO L276 IsEmpty]: Start isEmpty. Operand 3623 states and 9979 transitions. [2023-12-02 12:31:28,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 12:31:28,555 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:28,555 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:28,557 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (94)] Ended with exit code 0 [2023-12-02 12:31:28,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:28,755 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:28,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:28,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1232231801, now seen corresponding path program 6 times [2023-12-02 12:31:28,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:28,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [986250506] [2023-12-02 12:31:28,756 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-02 12:31:28,756 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:28,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:28,757 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:28,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (95)] Waiting until timeout for monitored process [2023-12-02 12:31:28,849 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-12-02 12:31:28,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:28,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:28,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:28,953 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_116| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_108| (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_116| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_108|)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_116| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_108| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_116|)))) is different from true [2023-12-02 12:31:28,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:28,981 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:28,981 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:28,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [986250506] [2023-12-02 12:31:28,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [986250506] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:28,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:28,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:28,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472281433] [2023-12-02 12:31:28,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:28,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:28,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:28,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:28,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:28,982 INFO L87 Difference]: Start difference. First operand 3623 states and 9979 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:29,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:29,035 INFO L93 Difference]: Finished difference Result 3843 states and 10426 transitions. [2023-12-02 12:31:29,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:29,035 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-02 12:31:29,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:29,042 INFO L225 Difference]: With dead ends: 3843 [2023-12-02 12:31:29,042 INFO L226 Difference]: Without dead ends: 3843 [2023-12-02 12:31:29,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:29,043 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:29,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 18 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 56 Unchecked, 0.0s Time] [2023-12-02 12:31:29,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3843 states. [2023-12-02 12:31:29,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3843 to 3635. [2023-12-02 12:31:29,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3635 states, 3633 states have (on average 2.7533718689788054) internal successors, (10003), 3634 states have internal predecessors, (10003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:29,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3635 states to 3635 states and 10003 transitions. [2023-12-02 12:31:29,100 INFO L78 Accepts]: Start accepts. Automaton has 3635 states and 10003 transitions. Word has length 18 [2023-12-02 12:31:29,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:29,101 INFO L495 AbstractCegarLoop]: Abstraction has 3635 states and 10003 transitions. [2023-12-02 12:31:29,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:29,101 INFO L276 IsEmpty]: Start isEmpty. Operand 3635 states and 10003 transitions. [2023-12-02 12:31:29,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 12:31:29,102 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:29,102 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:29,104 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (95)] Ended with exit code 0 [2023-12-02 12:31:29,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:29,302 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:29,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:29,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1232200987, now seen corresponding path program 7 times [2023-12-02 12:31:29,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:29,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [966966136] [2023-12-02 12:31:29,303 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 12:31:29,303 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:29,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:29,304 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:29,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (96)] Waiting until timeout for monitored process [2023-12-02 12:31:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:31:29,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:29,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:29,498 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_117| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_109| (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_117| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_109|)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_117| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_109| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_117|)))) is different from true [2023-12-02 12:31:29,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:29,530 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:29,530 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:29,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [966966136] [2023-12-02 12:31:29,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [966966136] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:29,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:29,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:29,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727566316] [2023-12-02 12:31:29,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:29,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:29,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:29,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:29,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:29,531 INFO L87 Difference]: Start difference. First operand 3635 states and 10003 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:29,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:29,589 INFO L93 Difference]: Finished difference Result 3831 states and 10383 transitions. [2023-12-02 12:31:29,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:29,590 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-02 12:31:29,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:29,594 INFO L225 Difference]: With dead ends: 3831 [2023-12-02 12:31:29,595 INFO L226 Difference]: Without dead ends: 3831 [2023-12-02 12:31:29,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:29,595 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:29,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 18 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 56 Unchecked, 0.0s Time] [2023-12-02 12:31:29,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3831 states. [2023-12-02 12:31:29,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3831 to 3631. [2023-12-02 12:31:29,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3631 states, 3629 states have (on average 2.754202259575641) internal successors, (9995), 3630 states have internal predecessors, (9995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:29,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3631 states to 3631 states and 9995 transitions. [2023-12-02 12:31:29,641 INFO L78 Accepts]: Start accepts. Automaton has 3631 states and 9995 transitions. Word has length 18 [2023-12-02 12:31:29,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:29,641 INFO L495 AbstractCegarLoop]: Abstraction has 3631 states and 9995 transitions. [2023-12-02 12:31:29,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:29,641 INFO L276 IsEmpty]: Start isEmpty. Operand 3631 states and 9995 transitions. [2023-12-02 12:31:29,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 12:31:29,642 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:29,642 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:29,644 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (96)] Ended with exit code 0 [2023-12-02 12:31:29,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:29,842 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:29,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:29,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1113037843, now seen corresponding path program 7 times [2023-12-02 12:31:29,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:29,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2089869920] [2023-12-02 12:31:29,843 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 12:31:29,843 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:29,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:29,844 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:29,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (97)] Waiting until timeout for monitored process [2023-12-02 12:31:29,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:31:29,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:29,945 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:30,043 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_110| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_118| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_118|)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_118| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_110| (_ bv0 1)) |c_#valid|) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_118| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_110|) (_ bv0 1)))) is different from true [2023-12-02 12:31:30,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:30,084 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:30,085 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:30,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2089869920] [2023-12-02 12:31:30,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2089869920] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:30,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:30,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:30,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466623036] [2023-12-02 12:31:30,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:30,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:30,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:30,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:30,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:30,086 INFO L87 Difference]: Start difference. First operand 3631 states and 9995 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:30,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:30,139 INFO L93 Difference]: Finished difference Result 3756 states and 10242 transitions. [2023-12-02 12:31:30,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:30,139 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-02 12:31:30,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:30,144 INFO L225 Difference]: With dead ends: 3756 [2023-12-02 12:31:30,144 INFO L226 Difference]: Without dead ends: 3756 [2023-12-02 12:31:30,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:30,144 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:30,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 18 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 55 Unchecked, 0.0s Time] [2023-12-02 12:31:30,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3756 states. [2023-12-02 12:31:30,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3756 to 3599. [2023-12-02 12:31:30,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3599 states, 3597 states have (on average 2.7570197386711146) internal successors, (9917), 3598 states have internal predecessors, (9917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:30,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3599 states to 3599 states and 9917 transitions. [2023-12-02 12:31:30,189 INFO L78 Accepts]: Start accepts. Automaton has 3599 states and 9917 transitions. Word has length 18 [2023-12-02 12:31:30,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:30,189 INFO L495 AbstractCegarLoop]: Abstraction has 3599 states and 9917 transitions. [2023-12-02 12:31:30,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:30,189 INFO L276 IsEmpty]: Start isEmpty. Operand 3599 states and 9917 transitions. [2023-12-02 12:31:30,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 12:31:30,190 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:30,190 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:30,192 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (97)] Ended with exit code 0 [2023-12-02 12:31:30,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:30,391 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:30,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:30,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1113045469, now seen corresponding path program 8 times [2023-12-02 12:31:30,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:30,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [572183879] [2023-12-02 12:31:30,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:31:30,391 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:30,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:30,392 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:30,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (98)] Waiting until timeout for monitored process [2023-12-02 12:31:30,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 12:31:30,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:30,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:30,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:30,577 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_111| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_119| (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_119| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_111|)) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_119|)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_119| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_111| (_ bv0 1))))) is different from true [2023-12-02 12:31:30,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:30,618 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:30,618 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:30,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [572183879] [2023-12-02 12:31:30,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [572183879] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:30,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:30,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:30,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741307582] [2023-12-02 12:31:30,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:30,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:30,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:30,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:30,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:30,619 INFO L87 Difference]: Start difference. First operand 3599 states and 9917 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:30,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:30,677 INFO L93 Difference]: Finished difference Result 3704 states and 10109 transitions. [2023-12-02 12:31:30,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:30,678 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-02 12:31:30,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:30,682 INFO L225 Difference]: With dead ends: 3704 [2023-12-02 12:31:30,682 INFO L226 Difference]: Without dead ends: 3704 [2023-12-02 12:31:30,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:30,683 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:30,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 18 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 55 Unchecked, 0.0s Time] [2023-12-02 12:31:30,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3704 states. [2023-12-02 12:31:30,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3704 to 3593. [2023-12-02 12:31:30,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3593 states, 3591 states have (on average 2.758006126427179) internal successors, (9904), 3592 states have internal predecessors, (9904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:30,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3593 states to 3593 states and 9904 transitions. [2023-12-02 12:31:30,727 INFO L78 Accepts]: Start accepts. Automaton has 3593 states and 9904 transitions. Word has length 18 [2023-12-02 12:31:30,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:30,728 INFO L495 AbstractCegarLoop]: Abstraction has 3593 states and 9904 transitions. [2023-12-02 12:31:30,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:30,728 INFO L276 IsEmpty]: Start isEmpty. Operand 3593 states and 9904 transitions. [2023-12-02 12:31:30,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 12:31:30,729 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:30,729 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:30,731 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (98)] Ended with exit code 0 [2023-12-02 12:31:30,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:30,929 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:30,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:30,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1113252053, now seen corresponding path program 7 times [2023-12-02 12:31:30,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:30,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1029625329] [2023-12-02 12:31:30,930 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 12:31:30,930 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:30,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:30,931 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:30,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (99)] Waiting until timeout for monitored process [2023-12-02 12:31:31,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:31:31,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:31,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:31,125 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_120| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_112| (_ BitVec 32))) (and (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_120| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_112|) (_ bv0 1)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_120| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_112| (_ bv0 1)) |c_#valid|) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_120|) (_ bv0 1)))) is different from true [2023-12-02 12:31:31,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:31,162 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:31,162 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:31,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1029625329] [2023-12-02 12:31:31,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1029625329] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:31,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:31,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:31,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758882260] [2023-12-02 12:31:31,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:31,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:31,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:31,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:31,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:31,163 INFO L87 Difference]: Start difference. First operand 3593 states and 9904 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:31,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:31,217 INFO L93 Difference]: Finished difference Result 3816 states and 10357 transitions. [2023-12-02 12:31:31,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:31,217 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-02 12:31:31,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:31,222 INFO L225 Difference]: With dead ends: 3816 [2023-12-02 12:31:31,222 INFO L226 Difference]: Without dead ends: 3816 [2023-12-02 12:31:31,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:31,223 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:31,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 18 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 55 Unchecked, 0.0s Time] [2023-12-02 12:31:31,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3816 states. [2023-12-02 12:31:31,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3816 to 3533. [2023-12-02 12:31:31,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3533 states, 3531 states have (on average 2.769753610875106) internal successors, (9780), 3532 states have internal predecessors, (9780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:31,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3533 states to 3533 states and 9780 transitions. [2023-12-02 12:31:31,283 INFO L78 Accepts]: Start accepts. Automaton has 3533 states and 9780 transitions. Word has length 18 [2023-12-02 12:31:31,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:31,284 INFO L495 AbstractCegarLoop]: Abstraction has 3533 states and 9780 transitions. [2023-12-02 12:31:31,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:31,284 INFO L276 IsEmpty]: Start isEmpty. Operand 3533 states and 9780 transitions. [2023-12-02 12:31:31,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 12:31:31,285 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:31,285 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:31,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (99)] Ended with exit code 0 [2023-12-02 12:31:31,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:31,485 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:31,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:31,485 INFO L85 PathProgramCache]: Analyzing trace with hash -2147203751, now seen corresponding path program 8 times [2023-12-02 12:31:31,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:31,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2086977095] [2023-12-02 12:31:31,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:31:31,486 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:31,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:31,487 INFO L229 MonitoredProcess]: Starting monitored process 100 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:31,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (100)] Waiting until timeout for monitored process [2023-12-02 12:31:31,578 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 12:31:31,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:31,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:31,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:31,663 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_121| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_113| (_ BitVec 32))) (and (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_121| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_113|) (_ bv0 1)) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_121|)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_121| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_113| (_ bv0 1)) |c_#valid|))) is different from true [2023-12-02 12:31:31,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:31,704 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:31,705 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:31,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2086977095] [2023-12-02 12:31:31,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2086977095] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:31,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:31,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:31,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192764282] [2023-12-02 12:31:31,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:31,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:31,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:31,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:31,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:31,706 INFO L87 Difference]: Start difference. First operand 3533 states and 9780 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:31,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:31,754 INFO L93 Difference]: Finished difference Result 3534 states and 9761 transitions. [2023-12-02 12:31:31,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:31,755 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-02 12:31:31,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:31,760 INFO L225 Difference]: With dead ends: 3534 [2023-12-02 12:31:31,760 INFO L226 Difference]: Without dead ends: 3534 [2023-12-02 12:31:31,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:31,760 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:31,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 18 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 54 Unchecked, 0.0s Time] [2023-12-02 12:31:31,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3534 states. [2023-12-02 12:31:31,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3534 to 3493. [2023-12-02 12:31:31,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3493 states, 3491 states have (on average 2.7745631624176452) internal successors, (9686), 3492 states have internal predecessors, (9686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:31,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3493 states to 3493 states and 9686 transitions. [2023-12-02 12:31:31,805 INFO L78 Accepts]: Start accepts. Automaton has 3493 states and 9686 transitions. Word has length 18 [2023-12-02 12:31:31,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:31,805 INFO L495 AbstractCegarLoop]: Abstraction has 3493 states and 9686 transitions. [2023-12-02 12:31:31,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:31,805 INFO L276 IsEmpty]: Start isEmpty. Operand 3493 states and 9686 transitions. [2023-12-02 12:31:31,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 12:31:31,806 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:31,806 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:31,808 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (100)] Ended with exit code 0 [2023-12-02 12:31:32,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:32,007 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:32,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:32,007 INFO L85 PathProgramCache]: Analyzing trace with hash -2147470847, now seen corresponding path program 9 times [2023-12-02 12:31:32,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:32,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1758989983] [2023-12-02 12:31:32,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 12:31:32,008 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:32,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:32,009 INFO L229 MonitoredProcess]: Starting monitored process 101 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:32,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (101)] Waiting until timeout for monitored process [2023-12-02 12:31:32,101 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 12:31:32,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:32,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:32,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:32,189 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_122| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_114| (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_122| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_114|)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_122|) (_ bv0 1)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_122| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_114| (_ bv0 1)) |c_#valid|))) is different from true [2023-12-02 12:31:32,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:32,231 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:32,231 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:32,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1758989983] [2023-12-02 12:31:32,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1758989983] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:32,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:32,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:32,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960938145] [2023-12-02 12:31:32,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:32,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:32,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:32,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:32,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:32,233 INFO L87 Difference]: Start difference. First operand 3493 states and 9686 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:32,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:32,286 INFO L93 Difference]: Finished difference Result 3536 states and 9753 transitions. [2023-12-02 12:31:32,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:32,287 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-02 12:31:32,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:32,292 INFO L225 Difference]: With dead ends: 3536 [2023-12-02 12:31:32,292 INFO L226 Difference]: Without dead ends: 3536 [2023-12-02 12:31:32,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:32,292 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:32,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 18 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 54 Unchecked, 0.0s Time] [2023-12-02 12:31:32,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3536 states. [2023-12-02 12:31:32,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3536 to 3488. [2023-12-02 12:31:32,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3488 states, 3486 states have (on average 2.7753872633390704) internal successors, (9675), 3487 states have internal predecessors, (9675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:32,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3488 states to 3488 states and 9675 transitions. [2023-12-02 12:31:32,338 INFO L78 Accepts]: Start accepts. Automaton has 3488 states and 9675 transitions. Word has length 18 [2023-12-02 12:31:32,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:32,339 INFO L495 AbstractCegarLoop]: Abstraction has 3488 states and 9675 transitions. [2023-12-02 12:31:32,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:32,339 INFO L276 IsEmpty]: Start isEmpty. Operand 3488 states and 9675 transitions. [2023-12-02 12:31:32,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 12:31:32,340 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:32,340 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:32,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (101)] Forceful destruction successful, exit code 0 [2023-12-02 12:31:32,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:32,540 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:32,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:32,540 INFO L85 PathProgramCache]: Analyzing trace with hash 2140140025, now seen corresponding path program 8 times [2023-12-02 12:31:32,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:32,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1271061559] [2023-12-02 12:31:32,541 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:31:32,541 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:32,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:32,541 INFO L229 MonitoredProcess]: Starting monitored process 102 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:32,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (102)] Waiting until timeout for monitored process [2023-12-02 12:31:32,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 12:31:32,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:32,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:32,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:32,733 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_123| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_115| (_ BitVec 32))) (and (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_123| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_115|) (_ bv0 1)) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_123|)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_123| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_115| (_ bv0 1)) |c_#valid|))) is different from true [2023-12-02 12:31:32,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:32,772 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:32,772 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:32,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1271061559] [2023-12-02 12:31:32,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1271061559] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:32,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:32,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:32,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640338881] [2023-12-02 12:31:32,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:32,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:32,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:32,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:32,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:32,773 INFO L87 Difference]: Start difference. First operand 3488 states and 9675 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:32,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:32,820 INFO L93 Difference]: Finished difference Result 3489 states and 9656 transitions. [2023-12-02 12:31:32,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:32,821 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-02 12:31:32,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:32,825 INFO L225 Difference]: With dead ends: 3489 [2023-12-02 12:31:32,825 INFO L226 Difference]: Without dead ends: 3489 [2023-12-02 12:31:32,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:32,826 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:32,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 18 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 54 Unchecked, 0.0s Time] [2023-12-02 12:31:32,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3489 states. [2023-12-02 12:31:32,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3489 to 3437. [2023-12-02 12:31:32,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3437 states, 3435 states have (on average 2.7828238719068414) internal successors, (9559), 3436 states have internal predecessors, (9559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:32,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3437 states to 3437 states and 9559 transitions. [2023-12-02 12:31:32,878 INFO L78 Accepts]: Start accepts. Automaton has 3437 states and 9559 transitions. Word has length 18 [2023-12-02 12:31:32,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:32,878 INFO L495 AbstractCegarLoop]: Abstraction has 3437 states and 9559 transitions. [2023-12-02 12:31:32,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:32,878 INFO L276 IsEmpty]: Start isEmpty. Operand 3437 states and 9559 transitions. [2023-12-02 12:31:32,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 12:31:32,879 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:32,879 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:32,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (102)] Forceful destruction successful, exit code 0 [2023-12-02 12:31:33,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:33,079 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:33,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:33,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1579510721, now seen corresponding path program 1 times [2023-12-02 12:31:33,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:33,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [729604490] [2023-12-02 12:31:33,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:31:33,080 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:33,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:33,081 INFO L229 MonitoredProcess]: Starting monitored process 103 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:33,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (103)] Waiting until timeout for monitored process [2023-12-02 12:31:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:31:33,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:33,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:33,289 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_124| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_116| (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_124| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_116|)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_124| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_116| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_124|)))) is different from true [2023-12-02 12:31:33,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:33,306 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:33,306 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:33,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [729604490] [2023-12-02 12:31:33,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [729604490] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:33,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:33,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:33,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466731597] [2023-12-02 12:31:33,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:33,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:33,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:33,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:33,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:33,307 INFO L87 Difference]: Start difference. First operand 3437 states and 9559 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:33,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:33,366 INFO L93 Difference]: Finished difference Result 3706 states and 10109 transitions. [2023-12-02 12:31:33,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:33,366 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-02 12:31:33,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:33,371 INFO L225 Difference]: With dead ends: 3706 [2023-12-02 12:31:33,371 INFO L226 Difference]: Without dead ends: 3706 [2023-12-02 12:31:33,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:33,372 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:33,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 18 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 58 Unchecked, 0.0s Time] [2023-12-02 12:31:33,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3706 states. [2023-12-02 12:31:33,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3706 to 3501. [2023-12-02 12:31:33,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3501 states, 3499 states have (on average 2.7707916547585025) internal successors, (9695), 3500 states have internal predecessors, (9695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:33,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3501 states to 3501 states and 9695 transitions. [2023-12-02 12:31:33,417 INFO L78 Accepts]: Start accepts. Automaton has 3501 states and 9695 transitions. Word has length 19 [2023-12-02 12:31:33,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:33,417 INFO L495 AbstractCegarLoop]: Abstraction has 3501 states and 9695 transitions. [2023-12-02 12:31:33,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:33,417 INFO L276 IsEmpty]: Start isEmpty. Operand 3501 states and 9695 transitions. [2023-12-02 12:31:33,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 12:31:33,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:33,418 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:33,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (103)] Ended with exit code 0 [2023-12-02 12:31:33,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:33,619 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:33,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:33,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1566340991, now seen corresponding path program 2 times [2023-12-02 12:31:33,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:33,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1365701826] [2023-12-02 12:31:33,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:31:33,619 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:33,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:33,620 INFO L229 MonitoredProcess]: Starting monitored process 104 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:33,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (104)] Waiting until timeout for monitored process [2023-12-02 12:31:33,717 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 12:31:33,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:33,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:33,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:33,828 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_125| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_117| (_ BitVec 32))) (and (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_125| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_117| (_ bv0 1)) |c_#valid|) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_125|) (_ bv0 1)) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_125| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_117|) (_ bv0 1)))) is different from true [2023-12-02 12:31:33,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:33,849 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:33,849 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:33,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1365701826] [2023-12-02 12:31:33,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1365701826] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:33,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:33,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:33,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868178838] [2023-12-02 12:31:33,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:33,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:33,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:33,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:33,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:33,850 INFO L87 Difference]: Start difference. First operand 3501 states and 9695 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:33,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:33,905 INFO L93 Difference]: Finished difference Result 3728 states and 10155 transitions. [2023-12-02 12:31:33,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:33,906 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-02 12:31:33,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:33,911 INFO L225 Difference]: With dead ends: 3728 [2023-12-02 12:31:33,911 INFO L226 Difference]: Without dead ends: 3728 [2023-12-02 12:31:33,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:33,911 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 9 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:33,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 18 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 57 Unchecked, 0.0s Time] [2023-12-02 12:31:33,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3728 states. [2023-12-02 12:31:33,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3728 to 3513. [2023-12-02 12:31:33,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3513 states, 3511 states have (on average 2.7707205924238107) internal successors, (9728), 3512 states have internal predecessors, (9728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:33,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3513 states to 3513 states and 9728 transitions. [2023-12-02 12:31:33,956 INFO L78 Accepts]: Start accepts. Automaton has 3513 states and 9728 transitions. Word has length 19 [2023-12-02 12:31:33,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:33,956 INFO L495 AbstractCegarLoop]: Abstraction has 3513 states and 9728 transitions. [2023-12-02 12:31:33,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:33,956 INFO L276 IsEmpty]: Start isEmpty. Operand 3513 states and 9728 transitions. [2023-12-02 12:31:33,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 12:31:33,957 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:33,957 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:33,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (104)] Ended with exit code 0 [2023-12-02 12:31:34,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:34,158 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:34,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:34,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1242402465, now seen corresponding path program 3 times [2023-12-02 12:31:34,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:34,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [765775780] [2023-12-02 12:31:34,158 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 12:31:34,158 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:34,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:34,159 INFO L229 MonitoredProcess]: Starting monitored process 105 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:34,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (105)] Waiting until timeout for monitored process [2023-12-02 12:31:34,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 12:31:34,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:34,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:34,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:34,368 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_126| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_118| (_ BitVec 32))) (and (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_126| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_118|) (_ bv0 1)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_126| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_118| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_126|)))) is different from true [2023-12-02 12:31:34,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:34,419 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:34,420 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:34,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [765775780] [2023-12-02 12:31:34,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [765775780] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:34,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:34,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:34,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757682956] [2023-12-02 12:31:34,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:34,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:34,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:34,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:34,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:34,421 INFO L87 Difference]: Start difference. First operand 3513 states and 9728 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:34,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:34,474 INFO L93 Difference]: Finished difference Result 3658 states and 10010 transitions. [2023-12-02 12:31:34,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:34,475 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-02 12:31:34,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:34,480 INFO L225 Difference]: With dead ends: 3658 [2023-12-02 12:31:34,481 INFO L226 Difference]: Without dead ends: 3658 [2023-12-02 12:31:34,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:34,481 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:34,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 18 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 56 Unchecked, 0.0s Time] [2023-12-02 12:31:34,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3658 states. [2023-12-02 12:31:34,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3658 to 3505. [2023-12-02 12:31:34,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3505 states, 3503 states have (on average 2.7727662003996576) internal successors, (9713), 3504 states have internal predecessors, (9713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:34,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3505 states to 3505 states and 9713 transitions. [2023-12-02 12:31:34,525 INFO L78 Accepts]: Start accepts. Automaton has 3505 states and 9713 transitions. Word has length 19 [2023-12-02 12:31:34,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:34,525 INFO L495 AbstractCegarLoop]: Abstraction has 3505 states and 9713 transitions. [2023-12-02 12:31:34,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:34,525 INFO L276 IsEmpty]: Start isEmpty. Operand 3505 states and 9713 transitions. [2023-12-02 12:31:34,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 12:31:34,526 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:34,526 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:34,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (105)] Ended with exit code 0 [2023-12-02 12:31:34,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:34,727 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:34,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:34,727 INFO L85 PathProgramCache]: Analyzing trace with hash 443683678, now seen corresponding path program 1 times [2023-12-02 12:31:34,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:34,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2078362886] [2023-12-02 12:31:34,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:31:34,727 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:34,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:34,728 INFO L229 MonitoredProcess]: Starting monitored process 106 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:34,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (106)] Waiting until timeout for monitored process [2023-12-02 12:31:34,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:31:34,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:34,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:34,950 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_127| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_119| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_127|) (_ bv0 1)) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_127| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_119|) (_ bv0 1)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_127| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_119| (_ bv0 1)) |c_#valid|))) is different from true [2023-12-02 12:31:34,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:34,967 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:34,967 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:34,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2078362886] [2023-12-02 12:31:34,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2078362886] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:34,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:34,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:34,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374738792] [2023-12-02 12:31:34,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:34,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:34,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:34,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:34,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:34,968 INFO L87 Difference]: Start difference. First operand 3505 states and 9713 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:35,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:35,025 INFO L93 Difference]: Finished difference Result 3774 states and 10263 transitions. [2023-12-02 12:31:35,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:35,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-02 12:31:35,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:35,031 INFO L225 Difference]: With dead ends: 3774 [2023-12-02 12:31:35,031 INFO L226 Difference]: Without dead ends: 3774 [2023-12-02 12:31:35,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:35,031 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:35,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 18 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 58 Unchecked, 0.0s Time] [2023-12-02 12:31:35,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3774 states. [2023-12-02 12:31:35,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3774 to 3569. [2023-12-02 12:31:35,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3569 states, 3567 states have (on average 2.761143818334735) internal successors, (9849), 3568 states have internal predecessors, (9849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:35,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3569 states to 3569 states and 9849 transitions. [2023-12-02 12:31:35,079 INFO L78 Accepts]: Start accepts. Automaton has 3569 states and 9849 transitions. Word has length 19 [2023-12-02 12:31:35,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:35,079 INFO L495 AbstractCegarLoop]: Abstraction has 3569 states and 9849 transitions. [2023-12-02 12:31:35,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:35,079 INFO L276 IsEmpty]: Start isEmpty. Operand 3569 states and 9849 transitions. [2023-12-02 12:31:35,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 12:31:35,080 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:35,080 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:35,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (106)] Ended with exit code 0 [2023-12-02 12:31:35,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:35,280 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:35,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:35,281 INFO L85 PathProgramCache]: Analyzing trace with hash 428490268, now seen corresponding path program 2 times [2023-12-02 12:31:35,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:35,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1057952982] [2023-12-02 12:31:35,281 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:31:35,281 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:35,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:35,282 INFO L229 MonitoredProcess]: Starting monitored process 107 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:35,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (107)] Waiting until timeout for monitored process [2023-12-02 12:31:35,374 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 12:31:35,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:35,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:35,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:35,486 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_120| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_128| (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_128| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_120|)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_128| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_120| (_ bv0 1)) |c_#valid|) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_128|) (_ bv0 1)))) is different from true [2023-12-02 12:31:35,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:35,508 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:35,508 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:35,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1057952982] [2023-12-02 12:31:35,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1057952982] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:35,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:35,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:35,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129423777] [2023-12-02 12:31:35,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:35,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:35,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:35,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:35,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:35,509 INFO L87 Difference]: Start difference. First operand 3569 states and 9849 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:35,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:35,563 INFO L93 Difference]: Finished difference Result 3878 states and 10483 transitions. [2023-12-02 12:31:35,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:35,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-02 12:31:35,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:35,568 INFO L225 Difference]: With dead ends: 3878 [2023-12-02 12:31:35,568 INFO L226 Difference]: Without dead ends: 3878 [2023-12-02 12:31:35,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:35,568 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 9 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:35,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 18 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 57 Unchecked, 0.0s Time] [2023-12-02 12:31:35,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3878 states. [2023-12-02 12:31:35,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3878 to 3633. [2023-12-02 12:31:35,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3633 states, 3631 states have (on average 2.7477278986505094) internal successors, (9977), 3632 states have internal predecessors, (9977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:35,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3633 states to 3633 states and 9977 transitions. [2023-12-02 12:31:35,616 INFO L78 Accepts]: Start accepts. Automaton has 3633 states and 9977 transitions. Word has length 19 [2023-12-02 12:31:35,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:35,616 INFO L495 AbstractCegarLoop]: Abstraction has 3633 states and 9977 transitions. [2023-12-02 12:31:35,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:35,616 INFO L276 IsEmpty]: Start isEmpty. Operand 3633 states and 9977 transitions. [2023-12-02 12:31:35,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 12:31:35,617 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:35,617 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:35,619 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (107)] Ended with exit code 0 [2023-12-02 12:31:35,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:35,817 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:35,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:35,818 INFO L85 PathProgramCache]: Analyzing trace with hash 428494143, now seen corresponding path program 4 times [2023-12-02 12:31:35,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:35,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [190215118] [2023-12-02 12:31:35,818 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 12:31:35,818 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:35,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:35,819 INFO L229 MonitoredProcess]: Starting monitored process 108 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:35,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (108)] Waiting until timeout for monitored process [2023-12-02 12:31:35,913 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 12:31:35,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:35,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:35,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:36,031 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_121| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_129| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_129|)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_129| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_121| (_ bv0 1)) |c_#valid|) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_129| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_121|) (_ bv0 1)))) is different from true [2023-12-02 12:31:36,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:36,052 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:36,052 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:36,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [190215118] [2023-12-02 12:31:36,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [190215118] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:36,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:36,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:36,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078539194] [2023-12-02 12:31:36,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:36,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:36,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:36,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:36,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:36,053 INFO L87 Difference]: Start difference. First operand 3633 states and 9977 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:36,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:36,103 INFO L93 Difference]: Finished difference Result 3914 states and 10564 transitions. [2023-12-02 12:31:36,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:36,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-02 12:31:36,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:36,109 INFO L225 Difference]: With dead ends: 3914 [2023-12-02 12:31:36,109 INFO L226 Difference]: Without dead ends: 3914 [2023-12-02 12:31:36,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:36,109 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 9 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:36,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 18 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 57 Unchecked, 0.0s Time] [2023-12-02 12:31:36,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3914 states. [2023-12-02 12:31:36,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3914 to 3633. [2023-12-02 12:31:36,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3633 states, 3631 states have (on average 2.7477278986505094) internal successors, (9977), 3632 states have internal predecessors, (9977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:36,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3633 states to 3633 states and 9977 transitions. [2023-12-02 12:31:36,160 INFO L78 Accepts]: Start accepts. Automaton has 3633 states and 9977 transitions. Word has length 19 [2023-12-02 12:31:36,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:36,160 INFO L495 AbstractCegarLoop]: Abstraction has 3633 states and 9977 transitions. [2023-12-02 12:31:36,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:36,161 INFO L276 IsEmpty]: Start isEmpty. Operand 3633 states and 9977 transitions. [2023-12-02 12:31:36,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 12:31:36,161 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:36,161 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:36,163 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (108)] Ended with exit code 0 [2023-12-02 12:31:36,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:36,362 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:36,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:36,362 INFO L85 PathProgramCache]: Analyzing trace with hash 19546173, now seen corresponding path program 5 times [2023-12-02 12:31:36,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:36,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [69155089] [2023-12-02 12:31:36,362 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-02 12:31:36,362 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:36,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:36,363 INFO L229 MonitoredProcess]: Starting monitored process 109 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:36,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (109)] Waiting until timeout for monitored process [2023-12-02 12:31:36,463 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 12:31:36,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:36,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:36,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:36,586 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_130| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_122| (_ BitVec 32))) (and (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_130| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_122|) (_ bv0 1)) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_130|)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_130| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_122| (_ bv0 1)) |c_#valid|))) is different from true [2023-12-02 12:31:36,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:36,618 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:36,618 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:36,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [69155089] [2023-12-02 12:31:36,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [69155089] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:36,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:36,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:36,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898672073] [2023-12-02 12:31:36,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:36,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:36,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:36,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:36,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:36,619 INFO L87 Difference]: Start difference. First operand 3633 states and 9977 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:36,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:36,680 INFO L93 Difference]: Finished difference Result 3900 states and 10524 transitions. [2023-12-02 12:31:36,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:36,680 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-02 12:31:36,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:36,686 INFO L225 Difference]: With dead ends: 3900 [2023-12-02 12:31:36,686 INFO L226 Difference]: Without dead ends: 3900 [2023-12-02 12:31:36,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:36,686 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:36,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 18 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 56 Unchecked, 0.0s Time] [2023-12-02 12:31:36,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3900 states. [2023-12-02 12:31:36,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3900 to 3737. [2023-12-02 12:31:36,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3737 states, 3735 states have (on average 2.72904953145917) internal successors, (10193), 3736 states have internal predecessors, (10193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:36,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3737 states to 3737 states and 10193 transitions. [2023-12-02 12:31:36,735 INFO L78 Accepts]: Start accepts. Automaton has 3737 states and 10193 transitions. Word has length 19 [2023-12-02 12:31:36,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:36,735 INFO L495 AbstractCegarLoop]: Abstraction has 3737 states and 10193 transitions. [2023-12-02 12:31:36,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:36,735 INFO L276 IsEmpty]: Start isEmpty. Operand 3737 states and 10193 transitions. [2023-12-02 12:31:36,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 12:31:36,736 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:36,736 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:36,738 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (109)] Ended with exit code 0 [2023-12-02 12:31:36,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 109 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:36,936 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:36,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:36,937 INFO L85 PathProgramCache]: Analyzing trace with hash 19309798, now seen corresponding path program 3 times [2023-12-02 12:31:36,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:36,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [946372168] [2023-12-02 12:31:36,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 12:31:36,937 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:36,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:36,938 INFO L229 MonitoredProcess]: Starting monitored process 110 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:36,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (110)] Waiting until timeout for monitored process [2023-12-02 12:31:37,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 12:31:37,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:37,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:37,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:37,156 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_131| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_123| (_ BitVec 32))) (and (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_131| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_123| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_131|)) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_131| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_123|)))) is different from true [2023-12-02 12:31:37,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:37,188 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:37,188 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:37,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [946372168] [2023-12-02 12:31:37,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [946372168] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:37,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:37,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:37,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876203470] [2023-12-02 12:31:37,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:37,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:37,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:37,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:37,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:37,189 INFO L87 Difference]: Start difference. First operand 3737 states and 10193 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:37,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:37,241 INFO L93 Difference]: Finished difference Result 3996 states and 10719 transitions. [2023-12-02 12:31:37,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:37,242 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-02 12:31:37,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:37,247 INFO L225 Difference]: With dead ends: 3996 [2023-12-02 12:31:37,247 INFO L226 Difference]: Without dead ends: 3996 [2023-12-02 12:31:37,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:37,247 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:37,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 18 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 56 Unchecked, 0.0s Time] [2023-12-02 12:31:37,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3996 states. [2023-12-02 12:31:37,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3996 to 3613. [2023-12-02 12:31:37,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3613 states, 3611 states have (on average 2.7518692882857936) internal successors, (9937), 3612 states have internal predecessors, (9937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:37,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3613 states to 3613 states and 9937 transitions. [2023-12-02 12:31:37,307 INFO L78 Accepts]: Start accepts. Automaton has 3613 states and 9937 transitions. Word has length 19 [2023-12-02 12:31:37,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:37,308 INFO L495 AbstractCegarLoop]: Abstraction has 3613 states and 9937 transitions. [2023-12-02 12:31:37,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:37,308 INFO L276 IsEmpty]: Start isEmpty. Operand 3613 states and 9937 transitions. [2023-12-02 12:31:37,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 12:31:37,308 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:37,308 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:37,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (110)] Ended with exit code 0 [2023-12-02 12:31:37,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:37,509 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:37,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:37,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1452275601, now seen corresponding path program 6 times [2023-12-02 12:31:37,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:37,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933931403] [2023-12-02 12:31:37,510 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-02 12:31:37,510 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:37,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:37,510 INFO L229 MonitoredProcess]: Starting monitored process 111 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:37,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (111)] Waiting until timeout for monitored process [2023-12-02 12:31:37,609 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-12-02 12:31:37,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:37,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:37,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:37,715 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_132| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_124| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_132|)) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_132| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_124|)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_132| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_124| (_ bv0 1)) |c_#valid|))) is different from true [2023-12-02 12:31:37,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:37,750 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:37,750 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:37,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1933931403] [2023-12-02 12:31:37,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1933931403] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:37,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:37,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:37,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618473790] [2023-12-02 12:31:37,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:37,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:37,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:37,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:37,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:37,751 INFO L87 Difference]: Start difference. First operand 3613 states and 9937 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:37,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:37,799 INFO L93 Difference]: Finished difference Result 3718 states and 10135 transitions. [2023-12-02 12:31:37,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:37,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-02 12:31:37,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:37,805 INFO L225 Difference]: With dead ends: 3718 [2023-12-02 12:31:37,805 INFO L226 Difference]: Without dead ends: 3718 [2023-12-02 12:31:37,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:37,806 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:37,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 18 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 55 Unchecked, 0.0s Time] [2023-12-02 12:31:37,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3718 states. [2023-12-02 12:31:37,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3718 to 3645. [2023-12-02 12:31:37,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3645 states, 3643 states have (on average 2.7452648915728797) internal successors, (10001), 3644 states have internal predecessors, (10001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:37,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3645 states to 3645 states and 10001 transitions. [2023-12-02 12:31:37,862 INFO L78 Accepts]: Start accepts. Automaton has 3645 states and 10001 transitions. Word has length 19 [2023-12-02 12:31:37,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:37,862 INFO L495 AbstractCegarLoop]: Abstraction has 3645 states and 10001 transitions. [2023-12-02 12:31:37,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:37,862 INFO L276 IsEmpty]: Start isEmpty. Operand 3645 states and 10001 transitions. [2023-12-02 12:31:37,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 12:31:37,863 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:37,863 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:37,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (111)] Ended with exit code 0 [2023-12-02 12:31:38,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:38,063 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:38,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:38,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1460555546, now seen corresponding path program 4 times [2023-12-02 12:31:38,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:38,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1049269716] [2023-12-02 12:31:38,064 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 12:31:38,064 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:38,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:38,065 INFO L229 MonitoredProcess]: Starting monitored process 112 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:38,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (112)] Waiting until timeout for monitored process [2023-12-02 12:31:38,170 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 12:31:38,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:38,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:38,173 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:38,277 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_133| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_125| (_ BitVec 32))) (and (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_133| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_125| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_133|)) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_133| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_125|) (_ bv0 1)))) is different from true [2023-12-02 12:31:38,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:38,313 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:38,313 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:38,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1049269716] [2023-12-02 12:31:38,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1049269716] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:38,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:38,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:38,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518872019] [2023-12-02 12:31:38,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:38,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:38,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:38,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:38,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:38,314 INFO L87 Difference]: Start difference. First operand 3645 states and 10001 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:38,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:38,370 INFO L93 Difference]: Finished difference Result 3766 states and 10241 transitions. [2023-12-02 12:31:38,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:38,370 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-02 12:31:38,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:38,375 INFO L225 Difference]: With dead ends: 3766 [2023-12-02 12:31:38,375 INFO L226 Difference]: Without dead ends: 3766 [2023-12-02 12:31:38,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:38,375 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:38,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 18 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 55 Unchecked, 0.0s Time] [2023-12-02 12:31:38,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3766 states. [2023-12-02 12:31:38,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3766 to 3617. [2023-12-02 12:31:38,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3617 states, 3615 states have (on average 2.7510373443983402) internal successors, (9945), 3616 states have internal predecessors, (9945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:38,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3617 states to 3617 states and 9945 transitions. [2023-12-02 12:31:38,420 INFO L78 Accepts]: Start accepts. Automaton has 3617 states and 9945 transitions. Word has length 19 [2023-12-02 12:31:38,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:38,420 INFO L495 AbstractCegarLoop]: Abstraction has 3617 states and 9945 transitions. [2023-12-02 12:31:38,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:38,421 INFO L276 IsEmpty]: Start isEmpty. Operand 3617 states and 9945 transitions. [2023-12-02 12:31:38,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 12:31:38,421 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:38,421 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:38,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (112)] Ended with exit code 0 [2023-12-02 12:31:38,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:38,622 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:38,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:38,622 INFO L85 PathProgramCache]: Analyzing trace with hash -164241376, now seen corresponding path program 5 times [2023-12-02 12:31:38,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:38,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1605436972] [2023-12-02 12:31:38,623 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-02 12:31:38,623 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:38,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:38,623 INFO L229 MonitoredProcess]: Starting monitored process 113 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:38,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (113)] Waiting until timeout for monitored process [2023-12-02 12:31:38,717 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 12:31:38,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:38,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:38,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:38,819 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_134| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_126| (_ BitVec 32))) (and (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_134| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_126| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_134|)) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_134| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_126|)))) is different from true [2023-12-02 12:31:38,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:38,839 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:38,839 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:38,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1605436972] [2023-12-02 12:31:38,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1605436972] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:38,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:38,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:38,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268124502] [2023-12-02 12:31:38,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:38,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:38,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:38,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:38,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:38,840 INFO L87 Difference]: Start difference. First operand 3617 states and 9945 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:38,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:38,905 INFO L93 Difference]: Finished difference Result 3880 states and 10481 transitions. [2023-12-02 12:31:38,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:38,906 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-02 12:31:38,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:38,913 INFO L225 Difference]: With dead ends: 3880 [2023-12-02 12:31:38,913 INFO L226 Difference]: Without dead ends: 3880 [2023-12-02 12:31:38,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:38,913 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 9 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:38,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 18 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 57 Unchecked, 0.0s Time] [2023-12-02 12:31:38,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3880 states. [2023-12-02 12:31:38,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3880 to 3693. [2023-12-02 12:31:38,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3693 states, 3691 states have (on average 2.740178813329721) internal successors, (10114), 3692 states have internal predecessors, (10114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:38,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3693 states to 3693 states and 10114 transitions. [2023-12-02 12:31:38,993 INFO L78 Accepts]: Start accepts. Automaton has 3693 states and 10114 transitions. Word has length 19 [2023-12-02 12:31:38,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:38,993 INFO L495 AbstractCegarLoop]: Abstraction has 3693 states and 10114 transitions. [2023-12-02 12:31:38,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:38,993 INFO L276 IsEmpty]: Start isEmpty. Operand 3693 states and 10114 transitions. [2023-12-02 12:31:38,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 12:31:38,995 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:38,995 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:38,997 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (113)] Ended with exit code 0 [2023-12-02 12:31:39,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:39,195 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:39,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:39,196 INFO L85 PathProgramCache]: Analyzing trace with hash -635237086, now seen corresponding path program 6 times [2023-12-02 12:31:39,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:39,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1373296141] [2023-12-02 12:31:39,196 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-02 12:31:39,196 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:39,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:39,197 INFO L229 MonitoredProcess]: Starting monitored process 114 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:39,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (114)] Waiting until timeout for monitored process [2023-12-02 12:31:39,301 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-12-02 12:31:39,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:39,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:39,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:39,430 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_135| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_127| (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_135| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_127|)) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_135|)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_135| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_127| (_ bv0 1))))) is different from true [2023-12-02 12:31:39,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:39,468 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:39,468 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:39,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1373296141] [2023-12-02 12:31:39,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1373296141] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:39,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:39,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:39,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049825298] [2023-12-02 12:31:39,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:39,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:39,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:39,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:39,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:39,470 INFO L87 Difference]: Start difference. First operand 3693 states and 10114 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:39,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:39,528 INFO L93 Difference]: Finished difference Result 4020 states and 10782 transitions. [2023-12-02 12:31:39,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:39,528 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-02 12:31:39,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:39,534 INFO L225 Difference]: With dead ends: 4020 [2023-12-02 12:31:39,534 INFO L226 Difference]: Without dead ends: 4020 [2023-12-02 12:31:39,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:39,534 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:39,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 18 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 56 Unchecked, 0.0s Time] [2023-12-02 12:31:39,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4020 states. [2023-12-02 12:31:39,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4020 to 3797. [2023-12-02 12:31:39,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3797 states, 3795 states have (on average 2.7220026350461133) internal successors, (10330), 3796 states have internal predecessors, (10330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:39,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3797 states to 3797 states and 10330 transitions. [2023-12-02 12:31:39,582 INFO L78 Accepts]: Start accepts. Automaton has 3797 states and 10330 transitions. Word has length 19 [2023-12-02 12:31:39,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:39,582 INFO L495 AbstractCegarLoop]: Abstraction has 3797 states and 10330 transitions. [2023-12-02 12:31:39,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:39,582 INFO L276 IsEmpty]: Start isEmpty. Operand 3797 states and 10330 transitions. [2023-12-02 12:31:39,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 12:31:39,583 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:39,583 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:39,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (114)] Ended with exit code 0 [2023-12-02 12:31:39,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:39,783 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:39,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:39,784 INFO L85 PathProgramCache]: Analyzing trace with hash -635175551, now seen corresponding path program 7 times [2023-12-02 12:31:39,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:39,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [352438314] [2023-12-02 12:31:39,784 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 12:31:39,784 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:39,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:39,785 INFO L229 MonitoredProcess]: Starting monitored process 115 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:39,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (115)] Waiting until timeout for monitored process [2023-12-02 12:31:39,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:31:39,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:39,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:39,999 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_136| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_128| (_ BitVec 32))) (and (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_136| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_128|) (_ bv0 1)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_136| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_128| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_136|)))) is different from true [2023-12-02 12:31:40,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:40,033 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:40,033 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:40,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [352438314] [2023-12-02 12:31:40,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [352438314] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:40,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:40,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:40,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849283303] [2023-12-02 12:31:40,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:40,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:40,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:40,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:40,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:40,034 INFO L87 Difference]: Start difference. First operand 3797 states and 10330 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:40,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:40,094 INFO L93 Difference]: Finished difference Result 4148 states and 11049 transitions. [2023-12-02 12:31:40,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:40,095 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-02 12:31:40,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:40,100 INFO L225 Difference]: With dead ends: 4148 [2023-12-02 12:31:40,100 INFO L226 Difference]: Without dead ends: 4148 [2023-12-02 12:31:40,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:40,101 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:40,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 18 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 56 Unchecked, 0.0s Time] [2023-12-02 12:31:40,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2023-12-02 12:31:40,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 3817. [2023-12-02 12:31:40,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3817 states, 3815 states have (on average 2.7182175622542597) internal successors, (10370), 3816 states have internal predecessors, (10370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:40,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3817 states to 3817 states and 10370 transitions. [2023-12-02 12:31:40,150 INFO L78 Accepts]: Start accepts. Automaton has 3817 states and 10370 transitions. Word has length 19 [2023-12-02 12:31:40,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:40,150 INFO L495 AbstractCegarLoop]: Abstraction has 3817 states and 10370 transitions. [2023-12-02 12:31:40,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:40,151 INFO L276 IsEmpty]: Start isEmpty. Operand 3817 states and 10370 transitions. [2023-12-02 12:31:40,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 12:31:40,151 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:40,151 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:40,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (115)] Ended with exit code 0 [2023-12-02 12:31:40,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 115 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:40,352 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:40,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:40,352 INFO L85 PathProgramCache]: Analyzing trace with hash -485545793, now seen corresponding path program 8 times [2023-12-02 12:31:40,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:40,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1677922436] [2023-12-02 12:31:40,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:31:40,353 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:40,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:40,353 INFO L229 MonitoredProcess]: Starting monitored process 116 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:40,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (116)] Waiting until timeout for monitored process [2023-12-02 12:31:40,453 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 12:31:40,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:40,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:40,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:40,556 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_137| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_129| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_137|) (_ bv0 1)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_137| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_129| (_ bv0 1))) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_137| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_129|)))) is different from true [2023-12-02 12:31:40,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:40,590 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:40,590 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:40,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1677922436] [2023-12-02 12:31:40,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1677922436] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:40,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:40,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:40,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504321837] [2023-12-02 12:31:40,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:40,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:40,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:40,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:40,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:40,592 INFO L87 Difference]: Start difference. First operand 3817 states and 10370 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:40,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:40,644 INFO L93 Difference]: Finished difference Result 4134 states and 11017 transitions. [2023-12-02 12:31:40,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:40,645 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-02 12:31:40,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:40,650 INFO L225 Difference]: With dead ends: 4134 [2023-12-02 12:31:40,650 INFO L226 Difference]: Without dead ends: 4134 [2023-12-02 12:31:40,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:40,651 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:40,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 18 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 55 Unchecked, 0.0s Time] [2023-12-02 12:31:40,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4134 states. [2023-12-02 12:31:40,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4134 to 3805. [2023-12-02 12:31:40,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3805 states, 3803 states have (on average 2.7215356297659743) internal successors, (10350), 3804 states have internal predecessors, (10350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:40,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3805 states to 3805 states and 10350 transitions. [2023-12-02 12:31:40,711 INFO L78 Accepts]: Start accepts. Automaton has 3805 states and 10350 transitions. Word has length 19 [2023-12-02 12:31:40,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:40,711 INFO L495 AbstractCegarLoop]: Abstraction has 3805 states and 10350 transitions. [2023-12-02 12:31:40,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:40,711 INFO L276 IsEmpty]: Start isEmpty. Operand 3805 states and 10350 transitions. [2023-12-02 12:31:40,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 12:31:40,712 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:40,712 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:40,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (116)] Ended with exit code 0 [2023-12-02 12:31:40,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:40,913 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:40,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:40,913 INFO L85 PathProgramCache]: Analyzing trace with hash -485782168, now seen corresponding path program 7 times [2023-12-02 12:31:40,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:40,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [568287357] [2023-12-02 12:31:40,913 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 12:31:40,913 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:40,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:40,914 INFO L229 MonitoredProcess]: Starting monitored process 117 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:40,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (117)] Waiting until timeout for monitored process [2023-12-02 12:31:41,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:31:41,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:41,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:41,108 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_130| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_138| (_ BitVec 32))) (and (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_138| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_130| (_ bv0 1))) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_138|) (_ bv0 1)) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_138| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_130|) (_ bv0 1)))) is different from true [2023-12-02 12:31:41,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:41,143 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:41,143 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:41,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [568287357] [2023-12-02 12:31:41,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [568287357] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:41,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:41,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:41,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072554874] [2023-12-02 12:31:41,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:41,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:41,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:41,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:41,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:41,144 INFO L87 Difference]: Start difference. First operand 3805 states and 10350 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:41,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:41,196 INFO L93 Difference]: Finished difference Result 4108 states and 10967 transitions. [2023-12-02 12:31:41,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:41,197 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-02 12:31:41,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:41,202 INFO L225 Difference]: With dead ends: 4108 [2023-12-02 12:31:41,202 INFO L226 Difference]: Without dead ends: 4108 [2023-12-02 12:31:41,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:41,203 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:41,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 18 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 55 Unchecked, 0.0s Time] [2023-12-02 12:31:41,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4108 states. [2023-12-02 12:31:41,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4108 to 3646. [2023-12-02 12:31:41,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3644 states have (on average 2.7489023051591657) internal successors, (10017), 3645 states have internal predecessors, (10017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:41,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 10017 transitions. [2023-12-02 12:31:41,252 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 10017 transitions. Word has length 19 [2023-12-02 12:31:41,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:41,252 INFO L495 AbstractCegarLoop]: Abstraction has 3646 states and 10017 transitions. [2023-12-02 12:31:41,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:41,252 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 10017 transitions. [2023-12-02 12:31:41,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 12:31:41,253 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:41,253 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:41,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (117)] Ended with exit code 0 [2023-12-02 12:31:41,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 117 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:41,453 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:41,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:41,453 INFO L85 PathProgramCache]: Analyzing trace with hash -604791651, now seen corresponding path program 9 times [2023-12-02 12:31:41,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:41,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [630422653] [2023-12-02 12:31:41,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 12:31:41,454 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:41,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:41,454 INFO L229 MonitoredProcess]: Starting monitored process 118 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:41,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (118)] Waiting until timeout for monitored process [2023-12-02 12:31:41,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 12:31:41,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:41,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:41,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:41,658 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_131| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_139| (_ BitVec 32))) (and (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_139| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_131| (_ bv0 1))) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_139| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_131|)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_139|) (_ bv0 1)))) is different from true [2023-12-02 12:31:41,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:41,700 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:41,700 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:41,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [630422653] [2023-12-02 12:31:41,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [630422653] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:41,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:41,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:41,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982956227] [2023-12-02 12:31:41,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:41,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:41,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:41,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:41,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:41,700 INFO L87 Difference]: Start difference. First operand 3646 states and 10017 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:41,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:41,759 INFO L93 Difference]: Finished difference Result 3761 states and 10234 transitions. [2023-12-02 12:31:41,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:41,760 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-02 12:31:41,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:41,768 INFO L225 Difference]: With dead ends: 3761 [2023-12-02 12:31:41,769 INFO L226 Difference]: Without dead ends: 3761 [2023-12-02 12:31:41,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:41,769 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:41,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 18 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 54 Unchecked, 0.0s Time] [2023-12-02 12:31:41,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3761 states. [2023-12-02 12:31:41,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3761 to 3613. [2023-12-02 12:31:41,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3613 states, 3611 states have (on average 2.754915535862642) internal successors, (9948), 3612 states have internal predecessors, (9948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:41,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3613 states to 3613 states and 9948 transitions. [2023-12-02 12:31:41,847 INFO L78 Accepts]: Start accepts. Automaton has 3613 states and 9948 transitions. Word has length 19 [2023-12-02 12:31:41,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:41,847 INFO L495 AbstractCegarLoop]: Abstraction has 3613 states and 9948 transitions. [2023-12-02 12:31:41,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:41,847 INFO L276 IsEmpty]: Start isEmpty. Operand 3613 states and 9948 transitions. [2023-12-02 12:31:41,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 12:31:41,848 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:41,849 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:41,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (118)] Ended with exit code 0 [2023-12-02 12:31:42,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:42,049 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:42,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:42,049 INFO L85 PathProgramCache]: Analyzing trace with hash -613071596, now seen corresponding path program 8 times [2023-12-02 12:31:42,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:42,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2096756038] [2023-12-02 12:31:42,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:31:42,050 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:42,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:42,051 INFO L229 MonitoredProcess]: Starting monitored process 119 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:42,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (119)] Waiting until timeout for monitored process [2023-12-02 12:31:42,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 12:31:42,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:42,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:42,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:42,239 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_140| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_132| (_ BitVec 32))) (and (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_140| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_132| (_ bv0 1))) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_140|) (_ bv0 1)) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_140| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_132|) (_ bv0 1)))) is different from true [2023-12-02 12:31:42,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:42,279 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:42,279 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:42,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2096756038] [2023-12-02 12:31:42,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2096756038] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:42,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:42,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:42,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771711716] [2023-12-02 12:31:42,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:42,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:42,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:42,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:42,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:42,280 INFO L87 Difference]: Start difference. First operand 3613 states and 9948 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:42,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:42,341 INFO L93 Difference]: Finished difference Result 3701 states and 10118 transitions. [2023-12-02 12:31:42,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:42,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-02 12:31:42,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:42,348 INFO L225 Difference]: With dead ends: 3701 [2023-12-02 12:31:42,348 INFO L226 Difference]: Without dead ends: 3701 [2023-12-02 12:31:42,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:42,348 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:42,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 18 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 54 Unchecked, 0.0s Time] [2023-12-02 12:31:42,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3701 states. [2023-12-02 12:31:42,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3701 to 3511. [2023-12-02 12:31:42,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3511 states, 3509 states have (on average 2.7711598746081503) internal successors, (9724), 3510 states have internal predecessors, (9724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:42,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3511 states to 3511 states and 9724 transitions. [2023-12-02 12:31:42,415 INFO L78 Accepts]: Start accepts. Automaton has 3511 states and 9724 transitions. Word has length 19 [2023-12-02 12:31:42,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:42,416 INFO L495 AbstractCegarLoop]: Abstraction has 3511 states and 9724 transitions. [2023-12-02 12:31:42,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:42,416 INFO L276 IsEmpty]: Start isEmpty. Operand 3511 states and 9724 transitions. [2023-12-02 12:31:42,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 12:31:42,417 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:42,417 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:42,419 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (119)] Ended with exit code 0 [2023-12-02 12:31:42,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:42,617 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:42,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:42,618 INFO L85 PathProgramCache]: Analyzing trace with hash -2123481664, now seen corresponding path program 9 times [2023-12-02 12:31:42,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:42,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1988423338] [2023-12-02 12:31:42,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 12:31:42,619 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:42,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:42,620 INFO L229 MonitoredProcess]: Starting monitored process 120 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:42,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (120)] Waiting until timeout for monitored process [2023-12-02 12:31:42,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 12:31:42,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:42,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:42,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:42,835 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_141| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_133| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_141|) (_ bv0 1)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_141| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_133| (_ bv0 1)) |c_#valid|) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_141| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_133|) (_ bv0 1)))) is different from true [2023-12-02 12:31:42,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:42,869 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:42,870 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:42,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1988423338] [2023-12-02 12:31:42,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1988423338] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:42,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:42,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:42,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360110041] [2023-12-02 12:31:42,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:42,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:42,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:42,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:42,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:42,871 INFO L87 Difference]: Start difference. First operand 3511 states and 9724 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:42,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:42,923 INFO L93 Difference]: Finished difference Result 3739 states and 10189 transitions. [2023-12-02 12:31:42,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:42,923 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-02 12:31:42,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:42,928 INFO L225 Difference]: With dead ends: 3739 [2023-12-02 12:31:42,928 INFO L226 Difference]: Without dead ends: 3739 [2023-12-02 12:31:42,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:42,929 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:42,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 18 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 56 Unchecked, 0.0s Time] [2023-12-02 12:31:42,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3739 states. [2023-12-02 12:31:42,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3739 to 3527. [2023-12-02 12:31:42,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3527 states, 3525 states have (on average 2.7687943262411348) internal successors, (9760), 3526 states have internal predecessors, (9760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:42,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3527 states to 3527 states and 9760 transitions. [2023-12-02 12:31:42,976 INFO L78 Accepts]: Start accepts. Automaton has 3527 states and 9760 transitions. Word has length 19 [2023-12-02 12:31:42,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:42,976 INFO L495 AbstractCegarLoop]: Abstraction has 3527 states and 9760 transitions. [2023-12-02 12:31:42,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:42,976 INFO L276 IsEmpty]: Start isEmpty. Operand 3527 states and 9760 transitions. [2023-12-02 12:31:42,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 12:31:42,977 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:42,977 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:42,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (120)] Ended with exit code 0 [2023-12-02 12:31:43,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:43,177 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:43,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:43,178 INFO L85 PathProgramCache]: Analyzing trace with hash 455520510, now seen corresponding path program 10 times [2023-12-02 12:31:43,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:43,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1799479523] [2023-12-02 12:31:43,178 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 12:31:43,178 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:43,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:43,179 INFO L229 MonitoredProcess]: Starting monitored process 121 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:43,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (121)] Waiting until timeout for monitored process [2023-12-02 12:31:43,298 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 12:31:43,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:43,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:43,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:43,405 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_142| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_134| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_142|)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_142| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_134| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_142| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_134|)))) is different from true [2023-12-02 12:31:43,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:43,449 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:43,449 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:43,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1799479523] [2023-12-02 12:31:43,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1799479523] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:43,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:43,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:43,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406180078] [2023-12-02 12:31:43,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:43,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:43,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:43,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:43,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:43,450 INFO L87 Difference]: Start difference. First operand 3527 states and 9760 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:43,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:43,510 INFO L93 Difference]: Finished difference Result 3771 states and 10257 transitions. [2023-12-02 12:31:43,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:43,510 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-02 12:31:43,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:43,516 INFO L225 Difference]: With dead ends: 3771 [2023-12-02 12:31:43,516 INFO L226 Difference]: Without dead ends: 3771 [2023-12-02 12:31:43,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:43,517 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:43,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 18 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 55 Unchecked, 0.0s Time] [2023-12-02 12:31:43,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3771 states. [2023-12-02 12:31:43,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3771 to 3559. [2023-12-02 12:31:43,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3559 states, 3557 states have (on average 2.761877987067754) internal successors, (9824), 3558 states have internal predecessors, (9824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:43,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3559 states to 3559 states and 9824 transitions. [2023-12-02 12:31:43,576 INFO L78 Accepts]: Start accepts. Automaton has 3559 states and 9824 transitions. Word has length 19 [2023-12-02 12:31:43,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:43,576 INFO L495 AbstractCegarLoop]: Abstraction has 3559 states and 9824 transitions. [2023-12-02 12:31:43,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:43,576 INFO L276 IsEmpty]: Start isEmpty. Operand 3559 states and 9824 transitions. [2023-12-02 12:31:43,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 12:31:43,578 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:43,578 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:43,579 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (121)] Ended with exit code 0 [2023-12-02 12:31:43,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:43,778 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:43,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:43,778 INFO L85 PathProgramCache]: Analyzing trace with hash 456475775, now seen corresponding path program 10 times [2023-12-02 12:31:43,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:43,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2134663138] [2023-12-02 12:31:43,779 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 12:31:43,779 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:43,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:43,780 INFO L229 MonitoredProcess]: Starting monitored process 122 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:43,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (122)] Waiting until timeout for monitored process [2023-12-02 12:31:43,888 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 12:31:43,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:43,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:43,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:43,988 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_143| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_135| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_143|) (_ bv0 1)) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_143| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_135|)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_143| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_135| (_ bv0 1))))) is different from true [2023-12-02 12:31:44,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:44,027 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:44,027 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:44,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2134663138] [2023-12-02 12:31:44,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2134663138] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:44,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:44,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:44,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805089075] [2023-12-02 12:31:44,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:44,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:44,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:44,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:44,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:44,028 INFO L87 Difference]: Start difference. First operand 3559 states and 9824 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:44,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:44,086 INFO L93 Difference]: Finished difference Result 3873 states and 10467 transitions. [2023-12-02 12:31:44,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:44,087 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-02 12:31:44,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:44,092 INFO L225 Difference]: With dead ends: 3873 [2023-12-02 12:31:44,093 INFO L226 Difference]: Without dead ends: 3873 [2023-12-02 12:31:44,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:44,093 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:44,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 18 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 55 Unchecked, 0.0s Time] [2023-12-02 12:31:44,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3873 states. [2023-12-02 12:31:44,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3873 to 3543. [2023-12-02 12:31:44,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3543 states, 3541 states have (on average 2.765320530923468) internal successors, (9792), 3542 states have internal predecessors, (9792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:44,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3543 states to 3543 states and 9792 transitions. [2023-12-02 12:31:44,139 INFO L78 Accepts]: Start accepts. Automaton has 3543 states and 9792 transitions. Word has length 19 [2023-12-02 12:31:44,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:44,139 INFO L495 AbstractCegarLoop]: Abstraction has 3543 states and 9792 transitions. [2023-12-02 12:31:44,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:44,139 INFO L276 IsEmpty]: Start isEmpty. Operand 3543 states and 9792 transitions. [2023-12-02 12:31:44,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 12:31:44,140 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:44,140 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:44,142 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (122)] Ended with exit code 0 [2023-12-02 12:31:44,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:44,340 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:44,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:44,341 INFO L85 PathProgramCache]: Analyzing trace with hash -144434243, now seen corresponding path program 11 times [2023-12-02 12:31:44,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:44,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [201554036] [2023-12-02 12:31:44,341 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-02 12:31:44,341 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:44,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:44,342 INFO L229 MonitoredProcess]: Starting monitored process 123 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:44,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (123)] Waiting until timeout for monitored process [2023-12-02 12:31:44,465 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 12:31:44,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:44,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:44,468 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:44,551 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_144| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_136| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_144|)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_144| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_136| (_ bv0 1))) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_144| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_136|)))) is different from true [2023-12-02 12:31:44,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:44,591 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:44,591 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:44,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [201554036] [2023-12-02 12:31:44,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [201554036] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:44,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:44,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:44,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23707153] [2023-12-02 12:31:44,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:44,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:44,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:44,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:44,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:44,593 INFO L87 Difference]: Start difference. First operand 3543 states and 9792 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:44,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:44,643 INFO L93 Difference]: Finished difference Result 3697 states and 10100 transitions. [2023-12-02 12:31:44,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:44,644 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-02 12:31:44,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:44,648 INFO L225 Difference]: With dead ends: 3697 [2023-12-02 12:31:44,649 INFO L226 Difference]: Without dead ends: 3697 [2023-12-02 12:31:44,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:44,649 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:44,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 18 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 54 Unchecked, 0.0s Time] [2023-12-02 12:31:44,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3697 states. [2023-12-02 12:31:44,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3697 to 3485. [2023-12-02 12:31:44,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3485 states, 3483 states have (on average 2.773184036749928) internal successors, (9659), 3484 states have internal predecessors, (9659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:44,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3485 states to 3485 states and 9659 transitions. [2023-12-02 12:31:44,692 INFO L78 Accepts]: Start accepts. Automaton has 3485 states and 9659 transitions. Word has length 19 [2023-12-02 12:31:44,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:44,692 INFO L495 AbstractCegarLoop]: Abstraction has 3485 states and 9659 transitions. [2023-12-02 12:31:44,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:44,692 INFO L276 IsEmpty]: Start isEmpty. Operand 3485 states and 9659 transitions. [2023-12-02 12:31:44,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 12:31:44,693 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:44,693 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:44,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (123)] Ended with exit code 0 [2023-12-02 12:31:44,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 123 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:44,893 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:44,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:44,894 INFO L85 PathProgramCache]: Analyzing trace with hash -144670618, now seen corresponding path program 11 times [2023-12-02 12:31:44,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:44,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1910992833] [2023-12-02 12:31:44,894 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-02 12:31:44,894 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:44,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:44,895 INFO L229 MonitoredProcess]: Starting monitored process 124 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:44,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (124)] Waiting until timeout for monitored process [2023-12-02 12:31:45,000 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 12:31:45,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:45,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:45,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:45,100 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_145| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_137| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_145|)) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_145| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_137|) (_ bv0 1)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_145| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_137| (_ bv0 1)) |c_#valid|))) is different from true [2023-12-02 12:31:45,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:45,139 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:45,139 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:45,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1910992833] [2023-12-02 12:31:45,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1910992833] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:45,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:45,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:45,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110904123] [2023-12-02 12:31:45,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:45,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:45,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:45,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:45,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:45,140 INFO L87 Difference]: Start difference. First operand 3485 states and 9659 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:45,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:45,201 INFO L93 Difference]: Finished difference Result 3717 states and 10132 transitions. [2023-12-02 12:31:45,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:45,201 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-02 12:31:45,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:45,206 INFO L225 Difference]: With dead ends: 3717 [2023-12-02 12:31:45,206 INFO L226 Difference]: Without dead ends: 3717 [2023-12-02 12:31:45,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:45,206 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:45,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 18 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 54 Unchecked, 0.0s Time] [2023-12-02 12:31:45,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3717 states. [2023-12-02 12:31:45,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3717 to 3408. [2023-12-02 12:31:45,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3408 states, 3406 states have (on average 2.7889019377568998) internal successors, (9499), 3407 states have internal predecessors, (9499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:45,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3408 states to 3408 states and 9499 transitions. [2023-12-02 12:31:45,251 INFO L78 Accepts]: Start accepts. Automaton has 3408 states and 9499 transitions. Word has length 19 [2023-12-02 12:31:45,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:45,251 INFO L495 AbstractCegarLoop]: Abstraction has 3408 states and 9499 transitions. [2023-12-02 12:31:45,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:45,251 INFO L276 IsEmpty]: Start isEmpty. Operand 3408 states and 9499 transitions. [2023-12-02 12:31:45,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 12:31:45,251 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:45,252 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:45,253 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (124)] Ended with exit code 0 [2023-12-02 12:31:45,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:45,452 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:45,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:45,452 INFO L85 PathProgramCache]: Analyzing trace with hash -2138806319, now seen corresponding path program 12 times [2023-12-02 12:31:45,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:45,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1394450500] [2023-12-02 12:31:45,453 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-02 12:31:45,453 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:45,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:45,454 INFO L229 MonitoredProcess]: Starting monitored process 125 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:45,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (125)] Waiting until timeout for monitored process [2023-12-02 12:31:45,574 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-12-02 12:31:45,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:45,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:45,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:45,668 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_146| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_138| (_ BitVec 32))) (and (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_146| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_138|) (_ bv0 1)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_146| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_138| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_146|)))) is different from true [2023-12-02 12:31:45,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:45,722 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:45,722 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:45,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1394450500] [2023-12-02 12:31:45,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1394450500] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:45,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:45,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:45,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983974225] [2023-12-02 12:31:45,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:45,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:45,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:45,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:45,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:45,723 INFO L87 Difference]: Start difference. First operand 3408 states and 9499 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:45,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:45,782 INFO L93 Difference]: Finished difference Result 3408 states and 9479 transitions. [2023-12-02 12:31:45,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:45,783 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-02 12:31:45,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:45,787 INFO L225 Difference]: With dead ends: 3408 [2023-12-02 12:31:45,787 INFO L226 Difference]: Without dead ends: 3408 [2023-12-02 12:31:45,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:45,788 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:45,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 18 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 53 Unchecked, 0.0s Time] [2023-12-02 12:31:45,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3408 states. [2023-12-02 12:31:45,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3408 to 3358. [2023-12-02 12:31:45,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3358 states, 3356 states have (on average 2.7961859356376637) internal successors, (9384), 3357 states have internal predecessors, (9384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:45,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3358 states to 3358 states and 9384 transitions. [2023-12-02 12:31:45,830 INFO L78 Accepts]: Start accepts. Automaton has 3358 states and 9384 transitions. Word has length 19 [2023-12-02 12:31:45,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:45,830 INFO L495 AbstractCegarLoop]: Abstraction has 3358 states and 9384 transitions. [2023-12-02 12:31:45,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:45,831 INFO L276 IsEmpty]: Start isEmpty. Operand 3358 states and 9384 transitions. [2023-12-02 12:31:45,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 12:31:45,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:45,831 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:45,833 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (125)] Ended with exit code 0 [2023-12-02 12:31:46,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:46,032 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:46,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:46,032 INFO L85 PathProgramCache]: Analyzing trace with hash -2147086264, now seen corresponding path program 12 times [2023-12-02 12:31:46,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:46,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [630086272] [2023-12-02 12:31:46,032 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-02 12:31:46,033 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:46,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:46,033 INFO L229 MonitoredProcess]: Starting monitored process 126 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:46,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (126)] Waiting until timeout for monitored process [2023-12-02 12:31:46,149 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-12-02 12:31:46,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:46,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:46,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:46,247 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_147| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_139| (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_147| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_139|)) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_147|)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_147| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_139| (_ bv0 1)) |c_#valid|))) is different from true [2023-12-02 12:31:46,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:46,317 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:46,317 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:46,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [630086272] [2023-12-02 12:31:46,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [630086272] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:46,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:46,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:46,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783089907] [2023-12-02 12:31:46,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:46,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:46,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:46,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:46,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:46,318 INFO L87 Difference]: Start difference. First operand 3358 states and 9384 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:46,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:46,371 INFO L93 Difference]: Finished difference Result 3358 states and 9364 transitions. [2023-12-02 12:31:46,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:46,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-02 12:31:46,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:46,376 INFO L225 Difference]: With dead ends: 3358 [2023-12-02 12:31:46,376 INFO L226 Difference]: Without dead ends: 3358 [2023-12-02 12:31:46,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:46,376 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:46,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 18 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 53 Unchecked, 0.0s Time] [2023-12-02 12:31:46,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3358 states. [2023-12-02 12:31:46,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3358 to 3293. [2023-12-02 12:31:46,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3293 states, 3291 states have (on average 2.807353388027955) internal successors, (9239), 3292 states have internal predecessors, (9239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:46,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3293 states to 3293 states and 9239 transitions. [2023-12-02 12:31:46,418 INFO L78 Accepts]: Start accepts. Automaton has 3293 states and 9239 transitions. Word has length 19 [2023-12-02 12:31:46,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:46,418 INFO L495 AbstractCegarLoop]: Abstraction has 3293 states and 9239 transitions. [2023-12-02 12:31:46,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:46,418 INFO L276 IsEmpty]: Start isEmpty. Operand 3293 states and 9239 transitions. [2023-12-02 12:31:46,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 12:31:46,419 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:46,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:46,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (126)] Forceful destruction successful, exit code 0 [2023-12-02 12:31:46,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:46,619 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:46,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:46,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1735381408, now seen corresponding path program 1 times [2023-12-02 12:31:46,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:46,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [29017145] [2023-12-02 12:31:46,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:31:46,620 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:46,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:46,621 INFO L229 MonitoredProcess]: Starting monitored process 127 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:46,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (127)] Waiting until timeout for monitored process [2023-12-02 12:31:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:31:46,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:46,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:46,860 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_140| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_148| (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_148| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_140|)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_148| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_140| (_ bv0 1)) |c_#valid|) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_148|) (_ bv0 1)))) is different from true [2023-12-02 12:31:46,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:46,876 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:46,877 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:46,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [29017145] [2023-12-02 12:31:46,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [29017145] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:46,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:46,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:46,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335269069] [2023-12-02 12:31:46,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:46,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:46,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:46,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:46,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:46,878 INFO L87 Difference]: Start difference. First operand 3293 states and 9239 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:46,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:46,933 INFO L93 Difference]: Finished difference Result 3618 states and 9927 transitions. [2023-12-02 12:31:46,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:46,934 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-12-02 12:31:46,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:46,939 INFO L225 Difference]: With dead ends: 3618 [2023-12-02 12:31:46,939 INFO L226 Difference]: Without dead ends: 3618 [2023-12-02 12:31:46,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:46,939 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 7 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:46,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 18 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 58 Unchecked, 0.0s Time] [2023-12-02 12:31:46,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3618 states. [2023-12-02 12:31:46,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3618 to 3357. [2023-12-02 12:31:46,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3357 states, 3355 states have (on average 2.7967213114754097) internal successors, (9383), 3356 states have internal predecessors, (9383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:46,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3357 states to 3357 states and 9383 transitions. [2023-12-02 12:31:46,982 INFO L78 Accepts]: Start accepts. Automaton has 3357 states and 9383 transitions. Word has length 20 [2023-12-02 12:31:46,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:46,982 INFO L495 AbstractCegarLoop]: Abstraction has 3357 states and 9383 transitions. [2023-12-02 12:31:46,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:46,982 INFO L276 IsEmpty]: Start isEmpty. Operand 3357 states and 9383 transitions. [2023-12-02 12:31:46,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 12:31:46,983 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:46,983 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:46,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (127)] Ended with exit code 0 [2023-12-02 12:31:47,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:47,183 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:47,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:47,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1720187998, now seen corresponding path program 2 times [2023-12-02 12:31:47,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:47,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [523588009] [2023-12-02 12:31:47,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:31:47,184 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:47,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:47,185 INFO L229 MonitoredProcess]: Starting monitored process 128 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:47,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (128)] Waiting until timeout for monitored process [2023-12-02 12:31:47,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 12:31:47,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:47,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:47,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:47,409 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_141| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_149| (_ BitVec 32))) (and (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_149| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_141|) (_ bv0 1)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_149| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_141| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_149|)))) is different from true [2023-12-02 12:31:47,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:47,431 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:47,431 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:47,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [523588009] [2023-12-02 12:31:47,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [523588009] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:47,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:47,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:47,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91013370] [2023-12-02 12:31:47,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:47,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:47,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:47,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:47,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:47,433 INFO L87 Difference]: Start difference. First operand 3357 states and 9383 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:47,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:47,485 INFO L93 Difference]: Finished difference Result 3682 states and 10071 transitions. [2023-12-02 12:31:47,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:47,486 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-12-02 12:31:47,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:47,491 INFO L225 Difference]: With dead ends: 3682 [2023-12-02 12:31:47,491 INFO L226 Difference]: Without dead ends: 3682 [2023-12-02 12:31:47,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:47,491 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:47,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 18 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 57 Unchecked, 0.0s Time] [2023-12-02 12:31:47,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3682 states. [2023-12-02 12:31:47,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3682 to 3389. [2023-12-02 12:31:47,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3389 states, 3387 states have (on average 2.7903749630941834) internal successors, (9451), 3388 states have internal predecessors, (9451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:47,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3389 states to 3389 states and 9451 transitions. [2023-12-02 12:31:47,534 INFO L78 Accepts]: Start accepts. Automaton has 3389 states and 9451 transitions. Word has length 20 [2023-12-02 12:31:47,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:47,534 INFO L495 AbstractCegarLoop]: Abstraction has 3389 states and 9451 transitions. [2023-12-02 12:31:47,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:47,535 INFO L276 IsEmpty]: Start isEmpty. Operand 3389 states and 9451 transitions. [2023-12-02 12:31:47,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 12:31:47,535 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:47,535 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:47,538 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (128)] Ended with exit code 0 [2023-12-02 12:31:47,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:47,736 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:47,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:47,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1311931018, now seen corresponding path program 3 times [2023-12-02 12:31:47,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:47,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [499055323] [2023-12-02 12:31:47,736 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 12:31:47,737 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:47,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:47,737 INFO L229 MonitoredProcess]: Starting monitored process 129 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:47,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (129)] Waiting until timeout for monitored process [2023-12-02 12:31:47,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 12:31:47,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:47,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:47,848 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:47,964 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_150| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_142| (_ BitVec 32))) (and (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_150| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_142| (_ bv0 1))) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_150| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_142|)) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_150|)))) is different from true [2023-12-02 12:31:47,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:47,992 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:47,992 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:47,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [499055323] [2023-12-02 12:31:47,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [499055323] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:47,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:47,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:47,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303527192] [2023-12-02 12:31:47,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:47,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:47,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:47,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:47,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:47,993 INFO L87 Difference]: Start difference. First operand 3389 states and 9451 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:48,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:48,049 INFO L93 Difference]: Finished difference Result 3792 states and 10301 transitions. [2023-12-02 12:31:48,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:48,050 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-12-02 12:31:48,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:48,054 INFO L225 Difference]: With dead ends: 3792 [2023-12-02 12:31:48,055 INFO L226 Difference]: Without dead ends: 3792 [2023-12-02 12:31:48,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:48,055 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 9 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:48,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 18 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 56 Unchecked, 0.0s Time] [2023-12-02 12:31:48,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3792 states. [2023-12-02 12:31:48,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3792 to 3477. [2023-12-02 12:31:48,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3477 states, 3475 states have (on average 2.7758273381294964) internal successors, (9646), 3476 states have internal predecessors, (9646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:48,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3477 states to 3477 states and 9646 transitions. [2023-12-02 12:31:48,111 INFO L78 Accepts]: Start accepts. Automaton has 3477 states and 9646 transitions. Word has length 20 [2023-12-02 12:31:48,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:48,111 INFO L495 AbstractCegarLoop]: Abstraction has 3477 states and 9646 transitions. [2023-12-02 12:31:48,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:48,111 INFO L276 IsEmpty]: Start isEmpty. Operand 3477 states and 9646 transitions. [2023-12-02 12:31:48,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 12:31:48,113 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:48,113 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:48,120 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (129)] Ended with exit code 0 [2023-12-02 12:31:48,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:48,313 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:48,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:48,314 INFO L85 PathProgramCache]: Analyzing trace with hash -140228696, now seen corresponding path program 4 times [2023-12-02 12:31:48,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:48,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2142926235] [2023-12-02 12:31:48,314 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 12:31:48,314 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:48,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:48,315 INFO L229 MonitoredProcess]: Starting monitored process 130 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:48,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (130)] Waiting until timeout for monitored process [2023-12-02 12:31:48,424 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 12:31:48,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:48,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:48,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:48,536 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_151| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_143| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_151|) (_ bv0 1)) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_151| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_143|) (_ bv0 1)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_151| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_143| (_ bv0 1)) |c_#valid|))) is different from true [2023-12-02 12:31:48,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:48,574 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:48,574 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:48,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2142926235] [2023-12-02 12:31:48,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2142926235] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:48,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:48,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:48,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204697475] [2023-12-02 12:31:48,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:48,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:48,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:48,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:48,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:48,576 INFO L87 Difference]: Start difference. First operand 3477 states and 9646 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:48,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:48,633 INFO L93 Difference]: Finished difference Result 3722 states and 10156 transitions. [2023-12-02 12:31:48,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:48,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-12-02 12:31:48,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:48,638 INFO L225 Difference]: With dead ends: 3722 [2023-12-02 12:31:48,638 INFO L226 Difference]: Without dead ends: 3722 [2023-12-02 12:31:48,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:48,639 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:48,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 18 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 55 Unchecked, 0.0s Time] [2023-12-02 12:31:48,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3722 states. [2023-12-02 12:31:48,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3722 to 3485. [2023-12-02 12:31:48,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3485 states, 3483 states have (on average 2.7743324720068907) internal successors, (9663), 3484 states have internal predecessors, (9663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:48,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3485 states to 3485 states and 9663 transitions. [2023-12-02 12:31:48,690 INFO L78 Accepts]: Start accepts. Automaton has 3485 states and 9663 transitions. Word has length 20 [2023-12-02 12:31:48,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:48,690 INFO L495 AbstractCegarLoop]: Abstraction has 3485 states and 9663 transitions. [2023-12-02 12:31:48,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:48,690 INFO L276 IsEmpty]: Start isEmpty. Operand 3485 states and 9663 transitions. [2023-12-02 12:31:48,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 12:31:48,691 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:48,691 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:48,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (130)] Forceful destruction successful, exit code 0 [2023-12-02 12:31:48,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:48,892 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:48,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:48,892 INFO L85 PathProgramCache]: Analyzing trace with hash 869292838, now seen corresponding path program 5 times [2023-12-02 12:31:48,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:48,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [854600826] [2023-12-02 12:31:48,892 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-02 12:31:48,892 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:48,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:48,893 INFO L229 MonitoredProcess]: Starting monitored process 131 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:48,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (131)] Waiting until timeout for monitored process [2023-12-02 12:31:49,000 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 12:31:49,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:49,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:49,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:49,119 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_152| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_144| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_152|)) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_152| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_144|)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_152| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_144| (_ bv0 1)) |c_#valid|))) is different from true [2023-12-02 12:31:49,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:49,140 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:49,140 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:49,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [854600826] [2023-12-02 12:31:49,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [854600826] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:49,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:49,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:49,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664196552] [2023-12-02 12:31:49,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:49,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:49,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:49,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:49,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:49,141 INFO L87 Difference]: Start difference. First operand 3485 states and 9663 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:49,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:49,190 INFO L93 Difference]: Finished difference Result 3914 states and 10580 transitions. [2023-12-02 12:31:49,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:49,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-12-02 12:31:49,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:49,195 INFO L225 Difference]: With dead ends: 3914 [2023-12-02 12:31:49,195 INFO L226 Difference]: Without dead ends: 3914 [2023-12-02 12:31:49,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:49,196 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:49,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 18 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 57 Unchecked, 0.0s Time] [2023-12-02 12:31:49,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3914 states. [2023-12-02 12:31:49,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3914 to 3581. [2023-12-02 12:31:49,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3581 states, 3579 states have (on average 2.75915060072646) internal successors, (9875), 3580 states have internal predecessors, (9875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:49,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3581 states to 3581 states and 9875 transitions. [2023-12-02 12:31:49,241 INFO L78 Accepts]: Start accepts. Automaton has 3581 states and 9875 transitions. Word has length 20 [2023-12-02 12:31:49,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:49,241 INFO L495 AbstractCegarLoop]: Abstraction has 3581 states and 9875 transitions. [2023-12-02 12:31:49,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:49,241 INFO L276 IsEmpty]: Start isEmpty. Operand 3581 states and 9875 transitions. [2023-12-02 12:31:49,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 12:31:49,242 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:49,242 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:49,244 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (131)] Ended with exit code 0 [2023-12-02 12:31:49,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 131 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:49,443 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:49,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:49,443 INFO L85 PathProgramCache]: Analyzing trace with hash 398297128, now seen corresponding path program 6 times [2023-12-02 12:31:49,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:49,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1938734380] [2023-12-02 12:31:49,443 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-02 12:31:49,443 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:49,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:49,444 INFO L229 MonitoredProcess]: Starting monitored process 132 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:49,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (132)] Waiting until timeout for monitored process [2023-12-02 12:31:49,552 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-12-02 12:31:49,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:49,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:49,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:49,667 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_153| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_145| (_ BitVec 32))) (and (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_153| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_145| (_ bv0 1)) |c_#valid|) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_153| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_145|) (_ bv0 1)) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_153|)))) is different from true [2023-12-02 12:31:49,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:49,699 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:49,699 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:49,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1938734380] [2023-12-02 12:31:49,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1938734380] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:49,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:49,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:49,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206573271] [2023-12-02 12:31:49,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:49,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:49,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:49,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:49,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:49,700 INFO L87 Difference]: Start difference. First operand 3581 states and 9875 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:49,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:49,757 INFO L93 Difference]: Finished difference Result 4010 states and 10792 transitions. [2023-12-02 12:31:49,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:49,757 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-12-02 12:31:49,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:49,762 INFO L225 Difference]: With dead ends: 4010 [2023-12-02 12:31:49,762 INFO L226 Difference]: Without dead ends: 4010 [2023-12-02 12:31:49,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:49,763 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 9 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:49,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 18 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 56 Unchecked, 0.0s Time] [2023-12-02 12:31:49,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4010 states. [2023-12-02 12:31:49,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4010 to 3629. [2023-12-02 12:31:49,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3629 states, 3627 states have (on average 2.750206782464847) internal successors, (9975), 3628 states have internal predecessors, (9975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:49,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3629 states to 3629 states and 9975 transitions. [2023-12-02 12:31:49,826 INFO L78 Accepts]: Start accepts. Automaton has 3629 states and 9975 transitions. Word has length 20 [2023-12-02 12:31:49,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:49,826 INFO L495 AbstractCegarLoop]: Abstraction has 3629 states and 9975 transitions. [2023-12-02 12:31:49,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:49,826 INFO L276 IsEmpty]: Start isEmpty. Operand 3629 states and 9975 transitions. [2023-12-02 12:31:49,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 12:31:49,827 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:49,827 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:49,829 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (132)] Ended with exit code 0 [2023-12-02 12:31:50,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:50,027 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:50,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:50,028 INFO L85 PathProgramCache]: Analyzing trace with hash 605931916, now seen corresponding path program 7 times [2023-12-02 12:31:50,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:50,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1091674585] [2023-12-02 12:31:50,028 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 12:31:50,028 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:50,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:50,029 INFO L229 MonitoredProcess]: Starting monitored process 133 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:50,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (133)] Waiting until timeout for monitored process [2023-12-02 12:31:50,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:31:50,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:50,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:50,246 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_154| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_146| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_154|)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_154| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_146| (_ bv0 1)) |c_#valid|) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_154| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_146|) (_ bv0 1)))) is different from true [2023-12-02 12:31:50,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:50,282 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:50,283 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:50,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1091674585] [2023-12-02 12:31:50,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1091674585] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:50,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:50,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:50,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118490666] [2023-12-02 12:31:50,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:50,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:50,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:50,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:50,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:50,284 INFO L87 Difference]: Start difference. First operand 3629 states and 9975 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:50,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:50,331 INFO L93 Difference]: Finished difference Result 4136 states and 11054 transitions. [2023-12-02 12:31:50,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:50,332 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-12-02 12:31:50,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:50,337 INFO L225 Difference]: With dead ends: 4136 [2023-12-02 12:31:50,337 INFO L226 Difference]: Without dead ends: 4136 [2023-12-02 12:31:50,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:50,337 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:50,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 18 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 55 Unchecked, 0.0s Time] [2023-12-02 12:31:50,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4136 states. [2023-12-02 12:31:50,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4136 to 3577. [2023-12-02 12:31:50,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3577 states, 3575 states have (on average 2.7566433566433566) internal successors, (9855), 3576 states have internal predecessors, (9855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:50,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3577 states to 3577 states and 9855 transitions. [2023-12-02 12:31:50,385 INFO L78 Accepts]: Start accepts. Automaton has 3577 states and 9855 transitions. Word has length 20 [2023-12-02 12:31:50,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:50,386 INFO L495 AbstractCegarLoop]: Abstraction has 3577 states and 9855 transitions. [2023-12-02 12:31:50,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:50,386 INFO L276 IsEmpty]: Start isEmpty. Operand 3577 states and 9855 transitions. [2023-12-02 12:31:50,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 12:31:50,387 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:50,387 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:50,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (133)] Ended with exit code 0 [2023-12-02 12:31:50,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:50,587 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:50,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:50,587 INFO L85 PathProgramCache]: Analyzing trace with hash -2070870118, now seen corresponding path program 8 times [2023-12-02 12:31:50,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:50,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1299760309] [2023-12-02 12:31:50,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:31:50,588 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:50,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:50,589 INFO L229 MonitoredProcess]: Starting monitored process 134 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:50,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (134)] Waiting until timeout for monitored process [2023-12-02 12:31:50,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 12:31:50,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:50,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:50,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:50,801 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_155| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_147| (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_155| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_147|)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_155| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_147| (_ bv0 1))) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_155|) (_ bv0 1)))) is different from true [2023-12-02 12:31:50,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:50,849 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:50,849 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:50,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1299760309] [2023-12-02 12:31:50,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1299760309] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:50,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:50,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:50,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012987471] [2023-12-02 12:31:50,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:50,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:50,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:50,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:50,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:50,851 INFO L87 Difference]: Start difference. First operand 3577 states and 9855 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:50,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:50,909 INFO L93 Difference]: Finished difference Result 3782 states and 10281 transitions. [2023-12-02 12:31:50,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:50,910 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-12-02 12:31:50,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:50,915 INFO L225 Difference]: With dead ends: 3782 [2023-12-02 12:31:50,915 INFO L226 Difference]: Without dead ends: 3782 [2023-12-02 12:31:50,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:50,915 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:50,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 18 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 54 Unchecked, 0.0s Time] [2023-12-02 12:31:50,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3782 states. [2023-12-02 12:31:50,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3782 to 3581. [2023-12-02 12:31:50,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3581 states, 3579 states have (on average 2.7557977088572225) internal successors, (9863), 3580 states have internal predecessors, (9863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:50,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3581 states to 3581 states and 9863 transitions. [2023-12-02 12:31:50,963 INFO L78 Accepts]: Start accepts. Automaton has 3581 states and 9863 transitions. Word has length 20 [2023-12-02 12:31:50,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:50,963 INFO L495 AbstractCegarLoop]: Abstraction has 3581 states and 9863 transitions. [2023-12-02 12:31:50,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:50,963 INFO L276 IsEmpty]: Start isEmpty. Operand 3581 states and 9863 transitions. [2023-12-02 12:31:50,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 12:31:50,964 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:50,964 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:50,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (134)] Ended with exit code 0 [2023-12-02 12:31:51,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:51,164 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:51,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:51,165 INFO L85 PathProgramCache]: Analyzing trace with hash -796514652, now seen corresponding path program 9 times [2023-12-02 12:31:51,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:51,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1943119684] [2023-12-02 12:31:51,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 12:31:51,165 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:51,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:51,166 INFO L229 MonitoredProcess]: Starting monitored process 135 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:51,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (135)] Waiting until timeout for monitored process [2023-12-02 12:31:51,277 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 12:31:51,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:51,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:51,281 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:51,385 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_156| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_148| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_156|)) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_156| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_148|)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_156| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_148| (_ bv0 1))))) is different from true [2023-12-02 12:31:51,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:51,412 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:51,412 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:51,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1943119684] [2023-12-02 12:31:51,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1943119684] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:51,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:51,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:51,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339201180] [2023-12-02 12:31:51,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:51,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:51,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:51,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:51,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:51,413 INFO L87 Difference]: Start difference. First operand 3581 states and 9863 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:51,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:51,467 INFO L93 Difference]: Finished difference Result 4140 states and 11050 transitions. [2023-12-02 12:31:51,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:51,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-12-02 12:31:51,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:51,473 INFO L225 Difference]: With dead ends: 4140 [2023-12-02 12:31:51,473 INFO L226 Difference]: Without dead ends: 4140 [2023-12-02 12:31:51,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:51,473 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 9 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:51,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 18 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 56 Unchecked, 0.0s Time] [2023-12-02 12:31:51,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4140 states. [2023-12-02 12:31:51,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4140 to 3861. [2023-12-02 12:31:51,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3861 states, 3859 states have (on average 2.7162477325732053) internal successors, (10482), 3860 states have internal predecessors, (10482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:51,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3861 states to 3861 states and 10482 transitions. [2023-12-02 12:31:51,523 INFO L78 Accepts]: Start accepts. Automaton has 3861 states and 10482 transitions. Word has length 20 [2023-12-02 12:31:51,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:51,523 INFO L495 AbstractCegarLoop]: Abstraction has 3861 states and 10482 transitions. [2023-12-02 12:31:51,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:51,523 INFO L276 IsEmpty]: Start isEmpty. Operand 3861 states and 10482 transitions. [2023-12-02 12:31:51,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 12:31:51,524 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:51,524 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:51,526 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (135)] Ended with exit code 0 [2023-12-02 12:31:51,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 135 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:51,725 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:51,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:51,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1782487522, now seen corresponding path program 10 times [2023-12-02 12:31:51,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:51,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1536666244] [2023-12-02 12:31:51,725 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 12:31:51,725 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:51,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:51,726 INFO L229 MonitoredProcess]: Starting monitored process 136 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:51,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (136)] Waiting until timeout for monitored process [2023-12-02 12:31:51,857 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 12:31:51,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:51,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:51,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:51,974 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_157| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_149| (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_157| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_149|)) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_157|)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_157| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_149| (_ bv0 1)) |c_#valid|))) is different from true [2023-12-02 12:31:52,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:52,009 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:52,009 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:52,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1536666244] [2023-12-02 12:31:52,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1536666244] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:52,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:52,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:52,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513233947] [2023-12-02 12:31:52,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:52,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:52,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:52,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:52,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:52,010 INFO L87 Difference]: Start difference. First operand 3861 states and 10482 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:52,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:52,063 INFO L93 Difference]: Finished difference Result 4420 states and 11669 transitions. [2023-12-02 12:31:52,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:52,063 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-12-02 12:31:52,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:52,069 INFO L225 Difference]: With dead ends: 4420 [2023-12-02 12:31:52,069 INFO L226 Difference]: Without dead ends: 4420 [2023-12-02 12:31:52,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:52,069 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:52,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 18 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 55 Unchecked, 0.0s Time] [2023-12-02 12:31:52,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4420 states. [2023-12-02 12:31:52,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4420 to 4001. [2023-12-02 12:31:52,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4001 states, 3999 states have (on average 2.6941735433858462) internal successors, (10774), 4000 states have internal predecessors, (10774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:52,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4001 states to 4001 states and 10774 transitions. [2023-12-02 12:31:52,120 INFO L78 Accepts]: Start accepts. Automaton has 4001 states and 10774 transitions. Word has length 20 [2023-12-02 12:31:52,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:52,121 INFO L495 AbstractCegarLoop]: Abstraction has 4001 states and 10774 transitions. [2023-12-02 12:31:52,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:52,121 INFO L276 IsEmpty]: Start isEmpty. Operand 4001 states and 10774 transitions. [2023-12-02 12:31:52,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 12:31:52,122 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:52,122 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:52,124 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (136)] Ended with exit code 0 [2023-12-02 12:31:52,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 136 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:52,322 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:52,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:52,323 INFO L85 PathProgramCache]: Analyzing trace with hash 2127950154, now seen corresponding path program 11 times [2023-12-02 12:31:52,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:52,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2093002326] [2023-12-02 12:31:52,323 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-02 12:31:52,323 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:52,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:52,324 INFO L229 MonitoredProcess]: Starting monitored process 137 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:52,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (137)] Waiting until timeout for monitored process [2023-12-02 12:31:52,435 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 12:31:52,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:52,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:52,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:52,528 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_158| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_150| (_ BitVec 32))) (and (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_158| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_150| (_ bv0 1))) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_158|) (_ bv0 1)) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_158| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_150|)))) is different from true [2023-12-02 12:31:52,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:52,566 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:52,566 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:52,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2093002326] [2023-12-02 12:31:52,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2093002326] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:52,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:52,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:52,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744960735] [2023-12-02 12:31:52,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:52,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:52,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:52,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:52,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:52,568 INFO L87 Difference]: Start difference. First operand 4001 states and 10774 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:52,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:52,623 INFO L93 Difference]: Finished difference Result 4638 states and 12123 transitions. [2023-12-02 12:31:52,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:52,623 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-12-02 12:31:52,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:52,629 INFO L225 Difference]: With dead ends: 4638 [2023-12-02 12:31:52,629 INFO L226 Difference]: Without dead ends: 4638 [2023-12-02 12:31:52,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:52,629 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:52,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 18 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 54 Unchecked, 0.0s Time] [2023-12-02 12:31:52,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4638 states. [2023-12-02 12:31:52,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4638 to 3530. [2023-12-02 12:31:52,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3530 states, 3528 states have (on average 2.76218820861678) internal successors, (9745), 3529 states have internal predecessors, (9745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:52,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3530 states to 3530 states and 9745 transitions. [2023-12-02 12:31:52,679 INFO L78 Accepts]: Start accepts. Automaton has 3530 states and 9745 transitions. Word has length 20 [2023-12-02 12:31:52,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:52,679 INFO L495 AbstractCegarLoop]: Abstraction has 3530 states and 9745 transitions. [2023-12-02 12:31:52,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:52,679 INFO L276 IsEmpty]: Start isEmpty. Operand 3530 states and 9745 transitions. [2023-12-02 12:31:52,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 12:31:52,680 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:52,680 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:52,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (137)] Ended with exit code 0 [2023-12-02 12:31:52,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 137 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:52,881 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:52,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:52,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1568671444, now seen corresponding path program 12 times [2023-12-02 12:31:52,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:52,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1631432836] [2023-12-02 12:31:52,881 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-02 12:31:52,881 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:52,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:52,882 INFO L229 MonitoredProcess]: Starting monitored process 138 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:52,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (138)] Waiting until timeout for monitored process [2023-12-02 12:31:52,995 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-12-02 12:31:52,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:52,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:52,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:53,093 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_151| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_159| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_159|)) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_159| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_151|)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_159| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_151| (_ bv0 1)) |c_#valid|))) is different from true [2023-12-02 12:31:53,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:53,145 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:53,145 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:53,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1631432836] [2023-12-02 12:31:53,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1631432836] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:53,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:53,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:53,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128570487] [2023-12-02 12:31:53,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:53,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:53,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:53,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:53,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:53,146 INFO L87 Difference]: Start difference. First operand 3530 states and 9745 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:53,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:53,199 INFO L93 Difference]: Finished difference Result 3725 states and 10150 transitions. [2023-12-02 12:31:53,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:53,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-12-02 12:31:53,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:53,204 INFO L225 Difference]: With dead ends: 3725 [2023-12-02 12:31:53,204 INFO L226 Difference]: Without dead ends: 3725 [2023-12-02 12:31:53,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:53,205 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:53,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 18 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 53 Unchecked, 0.0s Time] [2023-12-02 12:31:53,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3725 states. [2023-12-02 12:31:53,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3725 to 3235. [2023-12-02 12:31:53,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3235 states, 3233 states have (on average 2.8165790287658523) internal successors, (9106), 3234 states have internal predecessors, (9106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:53,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3235 states to 3235 states and 9106 transitions. [2023-12-02 12:31:53,247 INFO L78 Accepts]: Start accepts. Automaton has 3235 states and 9106 transitions. Word has length 20 [2023-12-02 12:31:53,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:53,247 INFO L495 AbstractCegarLoop]: Abstraction has 3235 states and 9106 transitions. [2023-12-02 12:31:53,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:53,247 INFO L276 IsEmpty]: Start isEmpty. Operand 3235 states and 9106 transitions. [2023-12-02 12:31:53,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 12:31:53,248 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:53,248 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:53,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (138)] Ended with exit code 0 [2023-12-02 12:31:53,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:53,448 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:53,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:53,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1403421436, now seen corresponding path program 13 times [2023-12-02 12:31:53,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:53,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1980535937] [2023-12-02 12:31:53,449 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 12:31:53,449 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:53,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:53,450 INFO L229 MonitoredProcess]: Starting monitored process 139 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:53,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (139)] Waiting until timeout for monitored process [2023-12-02 12:31:53,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:31:53,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:53,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:53,673 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_152| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_160| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_160|)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_160| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_152| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_160| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_152|)))) is different from true [2023-12-02 12:31:53,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:53,709 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:53,710 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:53,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1980535937] [2023-12-02 12:31:53,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1980535937] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:53,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:53,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:53,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071563090] [2023-12-02 12:31:53,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:53,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:53,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:53,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:53,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:53,710 INFO L87 Difference]: Start difference. First operand 3235 states and 9106 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:53,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:53,764 INFO L93 Difference]: Finished difference Result 3599 states and 9875 transitions. [2023-12-02 12:31:53,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:53,764 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-12-02 12:31:53,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:53,769 INFO L225 Difference]: With dead ends: 3599 [2023-12-02 12:31:53,769 INFO L226 Difference]: Without dead ends: 3599 [2023-12-02 12:31:53,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:53,769 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:53,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 18 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 55 Unchecked, 0.0s Time] [2023-12-02 12:31:53,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3599 states. [2023-12-02 12:31:53,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3599 to 3347. [2023-12-02 12:31:53,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3347 states, 3345 states have (on average 2.795814648729447) internal successors, (9352), 3346 states have internal predecessors, (9352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:53,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3347 states to 3347 states and 9352 transitions. [2023-12-02 12:31:53,811 INFO L78 Accepts]: Start accepts. Automaton has 3347 states and 9352 transitions. Word has length 20 [2023-12-02 12:31:53,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:53,812 INFO L495 AbstractCegarLoop]: Abstraction has 3347 states and 9352 transitions. [2023-12-02 12:31:53,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:53,812 INFO L276 IsEmpty]: Start isEmpty. Operand 3347 states and 9352 transitions. [2023-12-02 12:31:53,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 12:31:53,813 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:53,813 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:53,815 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (139)] Ended with exit code 0 [2023-12-02 12:31:54,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:54,013 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:54,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:54,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1236234630, now seen corresponding path program 14 times [2023-12-02 12:31:54,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:54,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [436293911] [2023-12-02 12:31:54,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:31:54,014 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:54,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:54,014 INFO L229 MonitoredProcess]: Starting monitored process 140 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:54,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (140)] Waiting until timeout for monitored process [2023-12-02 12:31:54,128 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 12:31:54,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:54,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:54,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:54,237 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_161| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_153| (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_161| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_153|)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_161| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_153| (_ bv0 1))) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_161|) (_ bv0 1)))) is different from true [2023-12-02 12:31:54,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:54,282 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:54,282 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:54,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [436293911] [2023-12-02 12:31:54,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [436293911] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:54,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:54,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:54,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301881208] [2023-12-02 12:31:54,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:54,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:54,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:54,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:54,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:54,283 INFO L87 Difference]: Start difference. First operand 3347 states and 9352 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:54,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:54,333 INFO L93 Difference]: Finished difference Result 3711 states and 10121 transitions. [2023-12-02 12:31:54,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:54,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-12-02 12:31:54,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:54,339 INFO L225 Difference]: With dead ends: 3711 [2023-12-02 12:31:54,339 INFO L226 Difference]: Without dead ends: 3711 [2023-12-02 12:31:54,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:54,340 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:54,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 18 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 54 Unchecked, 0.0s Time] [2023-12-02 12:31:54,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3711 states. [2023-12-02 12:31:54,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3711 to 3403. [2023-12-02 12:31:54,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3403 states, 3401 states have (on average 2.7838870920317556) internal successors, (9468), 3402 states have internal predecessors, (9468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:54,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3403 states to 3403 states and 9468 transitions. [2023-12-02 12:31:54,383 INFO L78 Accepts]: Start accepts. Automaton has 3403 states and 9468 transitions. Word has length 20 [2023-12-02 12:31:54,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:54,383 INFO L495 AbstractCegarLoop]: Abstraction has 3403 states and 9468 transitions. [2023-12-02 12:31:54,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:54,384 INFO L276 IsEmpty]: Start isEmpty. Operand 3403 states and 9468 transitions. [2023-12-02 12:31:54,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 12:31:54,385 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:54,385 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:54,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (140)] Ended with exit code 0 [2023-12-02 12:31:54,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:54,585 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:54,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:54,585 INFO L85 PathProgramCache]: Analyzing trace with hash -182493684, now seen corresponding path program 15 times [2023-12-02 12:31:54,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:54,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1699054139] [2023-12-02 12:31:54,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 12:31:54,586 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:54,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:54,587 INFO L229 MonitoredProcess]: Starting monitored process 141 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:54,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (141)] Waiting until timeout for monitored process [2023-12-02 12:31:54,701 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 12:31:54,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:54,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:54,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:54,785 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_162| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_154| (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_162| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_154|)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_162| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_154| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_162|)))) is different from true [2023-12-02 12:31:54,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:54,831 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:54,831 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:54,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1699054139] [2023-12-02 12:31:54,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1699054139] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:54,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:54,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:54,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739994740] [2023-12-02 12:31:54,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:54,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:54,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:54,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:54,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:54,832 INFO L87 Difference]: Start difference. First operand 3403 states and 9468 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:54,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:54,887 INFO L93 Difference]: Finished difference Result 3767 states and 10237 transitions. [2023-12-02 12:31:54,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:54,887 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-12-02 12:31:54,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:54,892 INFO L225 Difference]: With dead ends: 3767 [2023-12-02 12:31:54,892 INFO L226 Difference]: Without dead ends: 3767 [2023-12-02 12:31:54,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:54,892 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:54,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 18 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 53 Unchecked, 0.0s Time] [2023-12-02 12:31:54,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3767 states. [2023-12-02 12:31:54,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3767 to 3108. [2023-12-02 12:31:54,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3108 states, 3106 states have (on average 2.842562781712814) internal successors, (8829), 3107 states have internal predecessors, (8829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:54,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3108 states to 3108 states and 8829 transitions. [2023-12-02 12:31:54,933 INFO L78 Accepts]: Start accepts. Automaton has 3108 states and 8829 transitions. Word has length 20 [2023-12-02 12:31:54,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:54,933 INFO L495 AbstractCegarLoop]: Abstraction has 3108 states and 8829 transitions. [2023-12-02 12:31:54,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:54,934 INFO L276 IsEmpty]: Start isEmpty. Operand 3108 states and 8829 transitions. [2023-12-02 12:31:54,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 12:31:54,934 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:54,934 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:54,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (141)] Ended with exit code 0 [2023-12-02 12:31:55,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 141 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:55,135 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:55,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:55,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1878485896, now seen corresponding path program 16 times [2023-12-02 12:31:55,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:55,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1715794798] [2023-12-02 12:31:55,136 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 12:31:55,136 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:55,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:55,137 INFO L229 MonitoredProcess]: Starting monitored process 142 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:55,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (142)] Waiting until timeout for monitored process [2023-12-02 12:31:55,249 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 12:31:55,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:55,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:31:55,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:55,334 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_163| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_155| (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_163| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_155|)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_163|) (_ bv0 1)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_163| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_155| (_ bv0 1))))) is different from true [2023-12-02 12:31:55,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:55,399 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:31:55,399 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:55,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1715794798] [2023-12-02 12:31:55,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1715794798] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:55,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:31:55,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:31:55,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342172973] [2023-12-02 12:31:55,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:55,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:31:55,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:55,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:31:55,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:55,400 INFO L87 Difference]: Start difference. First operand 3108 states and 8829 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:55,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:55,452 INFO L93 Difference]: Finished difference Result 3008 states and 8509 transitions. [2023-12-02 12:31:55,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:31:55,453 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-12-02 12:31:55,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:55,459 INFO L225 Difference]: With dead ends: 3008 [2023-12-02 12:31:55,459 INFO L226 Difference]: Without dead ends: 3008 [2023-12-02 12:31:55,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 12:31:55,459 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:55,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 18 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 52 Unchecked, 0.0s Time] [2023-12-02 12:31:55,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2023-12-02 12:31:55,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 2813. [2023-12-02 12:31:55,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2813 states, 2811 states have (on average 2.8783351120597653) internal successors, (8091), 2812 states have internal predecessors, (8091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:55,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2813 states to 2813 states and 8091 transitions. [2023-12-02 12:31:55,513 INFO L78 Accepts]: Start accepts. Automaton has 2813 states and 8091 transitions. Word has length 20 [2023-12-02 12:31:55,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:55,513 INFO L495 AbstractCegarLoop]: Abstraction has 2813 states and 8091 transitions. [2023-12-02 12:31:55,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:55,513 INFO L276 IsEmpty]: Start isEmpty. Operand 2813 states and 8091 transitions. [2023-12-02 12:31:55,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 12:31:55,514 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:55,515 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:55,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (142)] Ended with exit code 0 [2023-12-02 12:31:55,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:55,715 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:55,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:55,715 INFO L85 PathProgramCache]: Analyzing trace with hash 942800036, now seen corresponding path program 1 times [2023-12-02 12:31:55,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:55,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1524297148] [2023-12-02 12:31:55,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:31:55,716 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:55,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:55,716 INFO L229 MonitoredProcess]: Starting monitored process 143 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:55,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (143)] Waiting until timeout for monitored process [2023-12-02 12:31:55,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:31:55,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 12:31:55,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:55,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:55,876 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:31:56,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:56,053 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:56,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1524297148] [2023-12-02 12:31:56,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1524297148] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:31:56,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1404399520] [2023-12-02 12:31:56,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:31:56,054 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 12:31:56,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 12:31:56,055 INFO L229 MonitoredProcess]: Starting monitored process 144 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 12:31:56,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (144)] Waiting until timeout for monitored process [2023-12-02 12:31:56,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:31:56,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 12:31:56,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:56,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:56,279 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:31:56,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:56,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1404399520] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:31:56,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189551700] [2023-12-02 12:31:56,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:31:56,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:31:56,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:31:56,370 INFO L229 MonitoredProcess]: Starting monitored process 145 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:31:56,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Waiting until timeout for monitored process [2023-12-02 12:31:56,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:31:56,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 12:31:56,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:56,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:56,542 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:31:56,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:56,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189551700] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:31:56,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 12:31:56,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 12 [2023-12-02 12:31:56,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314319336] [2023-12-02 12:31:56,637 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 12:31:56,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-02 12:31:56,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:56,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-02 12:31:56,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-12-02 12:31:56,638 INFO L87 Difference]: Start difference. First operand 2813 states and 8091 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:57,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:31:57,784 INFO L93 Difference]: Finished difference Result 9280 states and 26102 transitions. [2023-12-02 12:31:57,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-02 12:31:57,785 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-02 12:31:57,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:31:57,799 INFO L225 Difference]: With dead ends: 9280 [2023-12-02 12:31:57,799 INFO L226 Difference]: Without dead ends: 9267 [2023-12-02 12:31:57,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=327, Invalid=933, Unknown=0, NotChecked=0, Total=1260 [2023-12-02 12:31:57,800 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 318 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 12:31:57,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 237 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 12:31:57,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9267 states. [2023-12-02 12:31:57,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9267 to 3286. [2023-12-02 12:31:57,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3286 states, 3284 states have (on average 2.925700365408039) internal successors, (9608), 3285 states have internal predecessors, (9608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:57,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3286 states to 3286 states and 9608 transitions. [2023-12-02 12:31:57,895 INFO L78 Accepts]: Start accepts. Automaton has 3286 states and 9608 transitions. Word has length 21 [2023-12-02 12:31:57,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:31:57,895 INFO L495 AbstractCegarLoop]: Abstraction has 3286 states and 9608 transitions. [2023-12-02 12:31:57,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:31:57,895 INFO L276 IsEmpty]: Start isEmpty. Operand 3286 states and 9608 transitions. [2023-12-02 12:31:57,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 12:31:57,896 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:31:57,896 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:31:57,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (143)] Ended with exit code 0 [2023-12-02 12:31:58,099 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (144)] Ended with exit code 0 [2023-12-02 12:31:58,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Forceful destruction successful, exit code 0 [2023-12-02 12:31:58,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,144 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,145 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:31:58,497 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:31:58,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:31:58,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1958368616, now seen corresponding path program 2 times [2023-12-02 12:31:58,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:31:58,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1825417627] [2023-12-02 12:31:58,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:31:58,498 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:31:58,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:31:58,499 INFO L229 MonitoredProcess]: Starting monitored process 146 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:31:58,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (146)] Waiting until timeout for monitored process [2023-12-02 12:31:58,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 12:31:58,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:58,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 12:31:58,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:58,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:58,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:31:58,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:58,900 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:31:58,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1825417627] [2023-12-02 12:31:58,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1825417627] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:31:58,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1929388161] [2023-12-02 12:31:58,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:31:58,900 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 12:31:58,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 12:31:58,901 INFO L229 MonitoredProcess]: Starting monitored process 147 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 12:31:58,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (147)] Waiting until timeout for monitored process [2023-12-02 12:31:59,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 12:31:59,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:59,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 12:31:59,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:59,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:59,206 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:31:59,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:59,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1929388161] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:31:59,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254051531] [2023-12-02 12:31:59,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:31:59,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:31:59,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:31:59,324 INFO L229 MonitoredProcess]: Starting monitored process 148 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:31:59,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Waiting until timeout for monitored process [2023-12-02 12:31:59,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 12:31:59,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:31:59,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 12:31:59,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:59,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:59,493 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:31:59,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:31:59,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254051531] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:31:59,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 12:31:59,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 12 [2023-12-02 12:31:59,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28132333] [2023-12-02 12:31:59,603 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 12:31:59,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-02 12:31:59,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:31:59,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-02 12:31:59,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-12-02 12:31:59,603 INFO L87 Difference]: Start difference. First operand 3286 states and 9608 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:32:00,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:32:00,729 INFO L93 Difference]: Finished difference Result 7118 states and 20040 transitions. [2023-12-02 12:32:00,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-02 12:32:00,730 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-02 12:32:00,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:32:00,740 INFO L225 Difference]: With dead ends: 7118 [2023-12-02 12:32:00,740 INFO L226 Difference]: Without dead ends: 7097 [2023-12-02 12:32:00,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=351, Invalid=909, Unknown=0, NotChecked=0, Total=1260 [2023-12-02 12:32:00,740 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 298 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 12:32:00,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 219 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 12:32:00,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7097 states. [2023-12-02 12:32:00,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7097 to 3330. [2023-12-02 12:32:00,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3330 states, 3328 states have (on average 2.9576322115384617) internal successors, (9843), 3329 states have internal predecessors, (9843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:32:00,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3330 states to 3330 states and 9843 transitions. [2023-12-02 12:32:00,810 INFO L78 Accepts]: Start accepts. Automaton has 3330 states and 9843 transitions. Word has length 21 [2023-12-02 12:32:00,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:32:00,810 INFO L495 AbstractCegarLoop]: Abstraction has 3330 states and 9843 transitions. [2023-12-02 12:32:00,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:32:00,810 INFO L276 IsEmpty]: Start isEmpty. Operand 3330 states and 9843 transitions. [2023-12-02 12:32:00,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 12:32:00,812 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:32:00,812 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:32:00,816 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Ended with exit code 0 [2023-12-02 12:32:01,014 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (146)] Ended with exit code 0 [2023-12-02 12:32:01,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (147)] Ended with exit code 0 [2023-12-02 12:32:01,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 148 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,146 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,147 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 12:32:01,412 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:32:01,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:32:01,413 INFO L85 PathProgramCache]: Analyzing trace with hash -2017094259, now seen corresponding path program 1 times [2023-12-02 12:32:01,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:32:01,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [976380902] [2023-12-02 12:32:01,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:32:01,413 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:32:01,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:32:01,414 INFO L229 MonitoredProcess]: Starting monitored process 149 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:32:01,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (149)] Waiting until timeout for monitored process [2023-12-02 12:32:01,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:32:01,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 12:32:01,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:32:01,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:32:01,569 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:32:01,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:32:01,803 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:32:01,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [976380902] [2023-12-02 12:32:01,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [976380902] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:32:01,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1983712963] [2023-12-02 12:32:01,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:32:01,804 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 12:32:01,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 12:32:01,805 INFO L229 MonitoredProcess]: Starting monitored process 150 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 12:32:01,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (150)] Waiting until timeout for monitored process [2023-12-02 12:32:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:32:01,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 12:32:01,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:32:02,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:32:02,021 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:32:02,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:32:02,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1983712963] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:32:02,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474030677] [2023-12-02 12:32:02,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:32:02,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:32:02,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:32:02,146 INFO L229 MonitoredProcess]: Starting monitored process 151 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:32:02,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Waiting until timeout for monitored process [2023-12-02 12:32:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:32:02,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 12:32:02,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:32:02,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:32:02,300 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:32:02,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:32:02,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474030677] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:32:02,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 12:32:02,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 12 [2023-12-02 12:32:02,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713163738] [2023-12-02 12:32:02,415 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 12:32:02,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-02 12:32:02,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:32:02,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-02 12:32:02,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-12-02 12:32:02,415 INFO L87 Difference]: Start difference. First operand 3330 states and 9843 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:32:03,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:32:03,265 INFO L93 Difference]: Finished difference Result 5917 states and 16761 transitions. [2023-12-02 12:32:03,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-02 12:32:03,266 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-02 12:32:03,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:32:03,274 INFO L225 Difference]: With dead ends: 5917 [2023-12-02 12:32:03,274 INFO L226 Difference]: Without dead ends: 5900 [2023-12-02 12:32:03,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=307, Invalid=749, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 12:32:03,274 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 271 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 12:32:03,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 165 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 12:32:03,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5900 states. [2023-12-02 12:32:03,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5900 to 3363. [2023-12-02 12:32:03,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3363 states, 3361 states have (on average 3.008628384409402) internal successors, (10112), 3362 states have internal predecessors, (10112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:32:03,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3363 states to 3363 states and 10112 transitions. [2023-12-02 12:32:03,340 INFO L78 Accepts]: Start accepts. Automaton has 3363 states and 10112 transitions. Word has length 21 [2023-12-02 12:32:03,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:32:03,341 INFO L495 AbstractCegarLoop]: Abstraction has 3363 states and 10112 transitions. [2023-12-02 12:32:03,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:32:03,341 INFO L276 IsEmpty]: Start isEmpty. Operand 3363 states and 10112 transitions. [2023-12-02 12:32:03,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-02 12:32:03,342 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:32:03,342 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:32:03,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Forceful destruction successful, exit code 0 [2023-12-02 12:32:03,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (150)] Forceful destruction successful, exit code 0 [2023-12-02 12:32:03,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (149)] Forceful destruction successful, exit code 0 [2023-12-02 12:32:03,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 151 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,150 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,149 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:32:03,943 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:32:03,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:32:03,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1524808558, now seen corresponding path program 2 times [2023-12-02 12:32:03,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:32:03,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1182790846] [2023-12-02 12:32:03,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:32:03,944 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:32:03,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:32:03,944 INFO L229 MonitoredProcess]: Starting monitored process 152 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:32:03,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (152)] Waiting until timeout for monitored process [2023-12-02 12:32:04,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 12:32:04,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:32:04,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 12:32:04,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:32:04,102 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:32:04,103 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:32:04,198 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:32:04,198 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:32:04,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1182790846] [2023-12-02 12:32:04,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1182790846] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:32:04,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1074865938] [2023-12-02 12:32:04,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:32:04,198 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 12:32:04,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 12:32:04,199 INFO L229 MonitoredProcess]: Starting monitored process 153 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 12:32:04,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (153)] Waiting until timeout for monitored process [2023-12-02 12:32:04,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 12:32:04,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:32:04,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 12:32:04,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:32:04,470 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:32:04,470 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:32:04,502 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:32:04,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1074865938] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:32:04,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698097123] [2023-12-02 12:32:04,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:32:04,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:32:04,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:32:04,504 INFO L229 MonitoredProcess]: Starting monitored process 154 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:32:04,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Waiting until timeout for monitored process [2023-12-02 12:32:04,647 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 12:32:04,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:32:04,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 12:32:04,650 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:32:04,674 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:32:04,674 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:32:04,709 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:32:04,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698097123] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:32:04,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 12:32:04,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 12 [2023-12-02 12:32:04,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376290046] [2023-12-02 12:32:04,710 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 12:32:04,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 12:32:04,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:32:04,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 12:32:04,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-02 12:32:04,711 INFO L87 Difference]: Start difference. First operand 3363 states and 10112 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:32:05,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:32:05,088 INFO L93 Difference]: Finished difference Result 9505 states and 28628 transitions. [2023-12-02 12:32:05,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 12:32:05,088 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-12-02 12:32:05,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:32:05,104 INFO L225 Difference]: With dead ends: 9505 [2023-12-02 12:32:05,104 INFO L226 Difference]: Without dead ends: 9505 [2023-12-02 12:32:05,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-12-02 12:32:05,104 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 406 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 12:32:05,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 299 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 12:32:05,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9505 states. [2023-12-02 12:32:05,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9505 to 9505. [2023-12-02 12:32:05,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9505 states, 9503 states have (on average 3.012522361359571) internal successors, (28628), 9504 states have internal predecessors, (28628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:32:05,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9505 states to 9505 states and 28628 transitions. [2023-12-02 12:32:05,245 INFO L78 Accepts]: Start accepts. Automaton has 9505 states and 28628 transitions. Word has length 26 [2023-12-02 12:32:05,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:32:05,245 INFO L495 AbstractCegarLoop]: Abstraction has 9505 states and 28628 transitions. [2023-12-02 12:32:05,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:32:05,245 INFO L276 IsEmpty]: Start isEmpty. Operand 9505 states and 28628 transitions. [2023-12-02 12:32:05,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-02 12:32:05,247 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:32:05,247 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:32:05,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Ended with exit code 0 [2023-12-02 12:32:05,449 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (152)] Ended with exit code 0 [2023-12-02 12:32:05,650 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (153)] Ended with exit code 0 [2023-12-02 12:32:05,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 154 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,152 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,153 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 12:32:05,848 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:32:05,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:32:05,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1823433514, now seen corresponding path program 2 times [2023-12-02 12:32:05,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:32:05,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2055421493] [2023-12-02 12:32:05,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:32:05,849 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:32:05,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:32:05,850 INFO L229 MonitoredProcess]: Starting monitored process 155 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:32:05,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (155)] Waiting until timeout for monitored process [2023-12-02 12:32:05,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 12:32:05,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:32:05,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 12:32:05,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:32:05,996 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:32:05,997 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:32:06,083 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:32:06,083 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:32:06,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2055421493] [2023-12-02 12:32:06,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2055421493] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:32:06,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [682821578] [2023-12-02 12:32:06,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:32:06,084 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 12:32:06,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 12:32:06,085 INFO L229 MonitoredProcess]: Starting monitored process 156 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 12:32:06,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (156)] Waiting until timeout for monitored process [2023-12-02 12:32:06,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 12:32:06,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:32:06,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 12:32:06,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:32:06,338 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:32:06,338 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:32:06,368 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:32:06,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [682821578] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:32:06,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797822947] [2023-12-02 12:32:06,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:32:06,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:32:06,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:32:06,369 INFO L229 MonitoredProcess]: Starting monitored process 157 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:32:06,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Waiting until timeout for monitored process [2023-12-02 12:32:06,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 12:32:06,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:32:06,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 12:32:06,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:32:06,528 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:32:06,528 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:32:06,561 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:32:06,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797822947] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:32:06,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 12:32:06,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 12 [2023-12-02 12:32:06,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130736836] [2023-12-02 12:32:06,562 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 12:32:06,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 12:32:06,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:32:06,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 12:32:06,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-02 12:32:06,563 INFO L87 Difference]: Start difference. First operand 9505 states and 28628 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:32:07,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:32:07,029 INFO L93 Difference]: Finished difference Result 28258 states and 84617 transitions. [2023-12-02 12:32:07,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 12:32:07,030 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-12-02 12:32:07,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:32:07,076 INFO L225 Difference]: With dead ends: 28258 [2023-12-02 12:32:07,077 INFO L226 Difference]: Without dead ends: 28258 [2023-12-02 12:32:07,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-12-02 12:32:07,077 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 544 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 12:32:07,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 328 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 12:32:07,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28258 states. [2023-12-02 12:32:07,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28258 to 28258. [2023-12-02 12:32:07,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28258 states, 28256 states have (on average 2.9946560022650055) internal successors, (84617), 28257 states have internal predecessors, (84617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:32:07,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28258 states to 28258 states and 84617 transitions. [2023-12-02 12:32:07,532 INFO L78 Accepts]: Start accepts. Automaton has 28258 states and 84617 transitions. Word has length 26 [2023-12-02 12:32:07,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:32:07,532 INFO L495 AbstractCegarLoop]: Abstraction has 28258 states and 84617 transitions. [2023-12-02 12:32:07,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:32:07,532 INFO L276 IsEmpty]: Start isEmpty. Operand 28258 states and 84617 transitions. [2023-12-02 12:32:07,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-02 12:32:07,537 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:32:07,537 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:32:07,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Ended with exit code 0 [2023-12-02 12:32:07,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (155)] Forceful destruction successful, exit code 0 [2023-12-02 12:32:07,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (156)] Ended with exit code 0 [2023-12-02 12:32:08,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 157 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,155 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,156 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 12:32:08,138 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:32:08,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:32:08,139 INFO L85 PathProgramCache]: Analyzing trace with hash -599520233, now seen corresponding path program 1 times [2023-12-02 12:32:08,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:32:08,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1844841283] [2023-12-02 12:32:08,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:32:08,139 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:32:08,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:32:08,140 INFO L229 MonitoredProcess]: Starting monitored process 158 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:32:08,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (158)] Waiting until timeout for monitored process [2023-12-02 12:32:08,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:32:08,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 12:32:08,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:32:08,430 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 12:32:08,430 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:32:08,853 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 12:32:08,853 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:32:08,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1844841283] [2023-12-02 12:32:08,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1844841283] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:32:08,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1567326574] [2023-12-02 12:32:08,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:32:08,854 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 12:32:08,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 12:32:08,855 INFO L229 MonitoredProcess]: Starting monitored process 159 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 12:32:08,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (159)] Waiting until timeout for monitored process [2023-12-02 12:32:09,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:32:09,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 12:32:09,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:32:09,101 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 12:32:09,102 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:32:09,289 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 12:32:09,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1567326574] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:32:09,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999279093] [2023-12-02 12:32:09,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:32:09,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:32:09,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:32:09,290 INFO L229 MonitoredProcess]: Starting monitored process 160 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:32:09,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Waiting until timeout for monitored process [2023-12-02 12:32:09,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:32:09,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 12:32:09,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:32:09,476 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 12:32:09,476 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:32:09,669 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 12:32:09,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999279093] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:32:09,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 12:32:09,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 10] total 18 [2023-12-02 12:32:09,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114992194] [2023-12-02 12:32:09,669 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 12:32:09,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-02 12:32:09,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:32:09,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-02 12:32:09,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2023-12-02 12:32:09,670 INFO L87 Difference]: Start difference. First operand 28258 states and 84617 transitions. Second operand has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 18 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:32:12,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:32:12,413 INFO L93 Difference]: Finished difference Result 73007 states and 210090 transitions. [2023-12-02 12:32:12,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-02 12:32:12,413 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 18 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-12-02 12:32:12,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:32:12,553 INFO L225 Difference]: With dead ends: 73007 [2023-12-02 12:32:12,553 INFO L226 Difference]: Without dead ends: 72978 [2023-12-02 12:32:12,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 940 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=825, Invalid=2367, Unknown=0, NotChecked=0, Total=3192 [2023-12-02 12:32:12,553 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 995 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 1432 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 1461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:32:12,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [995 Valid, 464 Invalid, 1461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1432 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 12:32:12,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72978 states. [2023-12-02 12:32:13,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72978 to 27172. [2023-12-02 12:32:13,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27172 states, 27170 states have (on average 3.0008097165991905) internal successors, (81532), 27171 states have internal predecessors, (81532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:32:13,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27172 states to 27172 states and 81532 transitions. [2023-12-02 12:32:13,502 INFO L78 Accepts]: Start accepts. Automaton has 27172 states and 81532 transitions. Word has length 33 [2023-12-02 12:32:13,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:32:13,502 INFO L495 AbstractCegarLoop]: Abstraction has 27172 states and 81532 transitions. [2023-12-02 12:32:13,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 18 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:32:13,502 INFO L276 IsEmpty]: Start isEmpty. Operand 27172 states and 81532 transitions. [2023-12-02 12:32:13,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-02 12:32:13,514 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:32:13,514 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:32:13,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (158)] Ended with exit code 0 [2023-12-02 12:32:13,716 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (159)] Ended with exit code 0 [2023-12-02 12:32:13,919 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Ended with exit code 0 [2023-12-02 12:32:14,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 158 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,159 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,160 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:32:14,115 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:32:14,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:32:14,115 INFO L85 PathProgramCache]: Analyzing trace with hash -529965986, now seen corresponding path program 2 times [2023-12-02 12:32:14,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:32:14,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766178731] [2023-12-02 12:32:14,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:32:14,115 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:32:14,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:32:14,116 INFO L229 MonitoredProcess]: Starting monitored process 161 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:32:14,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (161)] Waiting until timeout for monitored process [2023-12-02 12:32:14,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 12:32:14,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:32:14,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 12:32:14,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:32:14,629 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:32:14,629 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:32:15,299 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:32:15,299 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:32:15,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766178731] [2023-12-02 12:32:15,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [766178731] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:32:15,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [82289685] [2023-12-02 12:32:15,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:32:15,300 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 12:32:15,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 12:32:15,300 INFO L229 MonitoredProcess]: Starting monitored process 162 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 12:32:15,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (162)] Waiting until timeout for monitored process [2023-12-02 12:32:15,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 12:32:15,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:32:15,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 12:32:15,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:32:15,680 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:32:15,680 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:32:15,869 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:32:15,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [82289685] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:32:15,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598662678] [2023-12-02 12:32:15,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:32:15,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:32:15,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:32:15,871 INFO L229 MonitoredProcess]: Starting monitored process 163 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:32:15,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Waiting until timeout for monitored process [2023-12-02 12:32:16,029 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 12:32:16,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:32:16,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 12:32:16,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:32:16,153 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:32:16,153 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:32:16,324 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:32:16,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598662678] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:32:16,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 12:32:16,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 14, 14] total 26 [2023-12-02 12:32:16,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826349460] [2023-12-02 12:32:16,324 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 12:32:16,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-02 12:32:16,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:32:16,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-02 12:32:16,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=589, Unknown=0, NotChecked=0, Total=702 [2023-12-02 12:32:16,325 INFO L87 Difference]: Start difference. First operand 27172 states and 81532 transitions. Second operand has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:32:23,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:32:23,113 INFO L93 Difference]: Finished difference Result 106938 states and 301200 transitions. [2023-12-02 12:32:23,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-12-02 12:32:23,114 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2023-12-02 12:32:23,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:32:23,347 INFO L225 Difference]: With dead ends: 106938 [2023-12-02 12:32:23,347 INFO L226 Difference]: Without dead ends: 106913 [2023-12-02 12:32:23,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2433 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1833, Invalid=6539, Unknown=0, NotChecked=0, Total=8372 [2023-12-02 12:32:23,348 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 1115 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 3233 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1115 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 3254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 3233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-02 12:32:23,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1115 Valid, 1070 Invalid, 3254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 3233 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-02 12:32:23,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106913 states. [2023-12-02 12:32:24,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106913 to 32371. [2023-12-02 12:32:24,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32371 states, 32369 states have (on average 3.013840402854583) internal successors, (97555), 32370 states have internal predecessors, (97555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:32:24,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32371 states to 32371 states and 97555 transitions. [2023-12-02 12:32:24,844 INFO L78 Accepts]: Start accepts. Automaton has 32371 states and 97555 transitions. Word has length 42 [2023-12-02 12:32:24,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:32:24,844 INFO L495 AbstractCegarLoop]: Abstraction has 32371 states and 97555 transitions. [2023-12-02 12:32:24,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:32:24,844 INFO L276 IsEmpty]: Start isEmpty. Operand 32371 states and 97555 transitions. [2023-12-02 12:32:24,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-02 12:32:24,859 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:32:24,859 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:32:24,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (162)] Ended with exit code 0 [2023-12-02 12:32:25,062 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (161)] Ended with exit code 0 [2023-12-02 12:32:25,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Ended with exit code 0 [2023-12-02 12:32:25,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 162 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,161 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,163 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:32:25,460 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:32:25,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:32:25,461 INFO L85 PathProgramCache]: Analyzing trace with hash 790385114, now seen corresponding path program 3 times [2023-12-02 12:32:25,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:32:25,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [927466055] [2023-12-02 12:32:25,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 12:32:25,461 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:32:25,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:32:25,462 INFO L229 MonitoredProcess]: Starting monitored process 164 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:32:25,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (164)] Waiting until timeout for monitored process [2023-12-02 12:32:25,585 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-02 12:32:25,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:32:25,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 12:32:25,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:32:25,804 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:32:25,804 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:32:26,464 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:32:26,464 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:32:26,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [927466055] [2023-12-02 12:32:26,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [927466055] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:32:26,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2115080766] [2023-12-02 12:32:26,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 12:32:26,465 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 12:32:26,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 12:32:26,465 INFO L229 MonitoredProcess]: Starting monitored process 165 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 12:32:26,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (165)] Waiting until timeout for monitored process [2023-12-02 12:32:26,763 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-02 12:32:26,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:32:26,765 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 12:32:26,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:32:26,875 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:32:26,875 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:32:27,243 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:32:27,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2115080766] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:32:27,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725480762] [2023-12-02 12:32:27,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 12:32:27,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:32:27,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:32:27,244 INFO L229 MonitoredProcess]: Starting monitored process 166 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:32:27,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Waiting until timeout for monitored process [2023-12-02 12:32:27,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-02 12:32:27,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:32:27,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 12:32:27,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:32:27,477 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:32:27,477 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:32:27,645 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:32:27,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725480762] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:32:27,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 12:32:27,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 14, 14] total 26 [2023-12-02 12:32:27,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749835239] [2023-12-02 12:32:27,645 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 12:32:27,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-02 12:32:27,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:32:27,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-02 12:32:27,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=588, Unknown=0, NotChecked=0, Total=702 [2023-12-02 12:32:27,646 INFO L87 Difference]: Start difference. First operand 32371 states and 97555 transitions. Second operand has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:32:32,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:32:32,880 INFO L93 Difference]: Finished difference Result 116524 states and 333264 transitions. [2023-12-02 12:32:32,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-12-02 12:32:32,881 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2023-12-02 12:32:32,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:32:33,287 INFO L225 Difference]: With dead ends: 116524 [2023-12-02 12:32:33,287 INFO L226 Difference]: Without dead ends: 116499 [2023-12-02 12:32:33,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1521 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1387, Invalid=4933, Unknown=0, NotChecked=0, Total=6320 [2023-12-02 12:32:33,288 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 1064 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 2532 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1064 SdHoareTripleChecker+Valid, 853 SdHoareTripleChecker+Invalid, 2562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-02 12:32:33,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1064 Valid, 853 Invalid, 2562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 2532 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-02 12:32:33,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116499 states. [2023-12-02 12:32:34,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116499 to 36066. [2023-12-02 12:32:34,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36066 states, 36064 states have (on average 3.0220441437444543) internal successors, (108987), 36065 states have internal predecessors, (108987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:32:34,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36066 states to 36066 states and 108987 transitions. [2023-12-02 12:32:34,686 INFO L78 Accepts]: Start accepts. Automaton has 36066 states and 108987 transitions. Word has length 42 [2023-12-02 12:32:34,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:32:34,686 INFO L495 AbstractCegarLoop]: Abstraction has 36066 states and 108987 transitions. [2023-12-02 12:32:34,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:32:34,686 INFO L276 IsEmpty]: Start isEmpty. Operand 36066 states and 108987 transitions. [2023-12-02 12:32:34,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-02 12:32:34,701 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:32:34,701 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:32:34,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (165)] Ended with exit code 0 [2023-12-02 12:32:34,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Forceful destruction successful, exit code 0 [2023-12-02 12:32:35,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (164)] Ended with exit code 0 [2023-12-02 12:32:35,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 165 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,166 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,164 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:32:35,302 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:32:35,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:32:35,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1812759710, now seen corresponding path program 4 times [2023-12-02 12:32:35,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:32:35,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1038272600] [2023-12-02 12:32:35,302 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 12:32:35,302 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:32:35,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:32:35,303 INFO L229 MonitoredProcess]: Starting monitored process 167 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:32:35,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (167)] Waiting until timeout for monitored process [2023-12-02 12:32:35,417 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 12:32:35,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:32:35,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 12:32:35,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:32:35,605 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:32:35,605 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:32:36,294 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:32:36,294 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:32:36,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1038272600] [2023-12-02 12:32:36,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1038272600] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:32:36,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [194997454] [2023-12-02 12:32:36,295 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 12:32:36,295 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 12:32:36,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 12:32:36,296 INFO L229 MonitoredProcess]: Starting monitored process 168 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 12:32:36,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (168)] Waiting until timeout for monitored process [2023-12-02 12:32:36,535 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 12:32:36,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:32:36,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 12:32:36,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:32:36,614 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:32:36,615 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:32:36,851 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:32:36,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [194997454] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:32:36,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578468280] [2023-12-02 12:32:36,851 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 12:32:36,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:32:36,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:32:36,852 INFO L229 MonitoredProcess]: Starting monitored process 169 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:32:36,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Waiting until timeout for monitored process [2023-12-02 12:32:37,124 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 12:32:37,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:32:37,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 12:32:37,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:32:37,220 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:32:37,221 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:32:37,541 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:32:37,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578468280] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:32:37,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 12:32:37,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 14, 14] total 26 [2023-12-02 12:32:37,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165413729] [2023-12-02 12:32:37,542 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 12:32:37,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-02 12:32:37,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:32:37,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-02 12:32:37,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=598, Unknown=0, NotChecked=0, Total=702 [2023-12-02 12:32:37,543 INFO L87 Difference]: Start difference. First operand 36066 states and 108987 transitions. Second operand has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:32:44,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:32:44,980 INFO L93 Difference]: Finished difference Result 131170 states and 373065 transitions. [2023-12-02 12:32:44,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2023-12-02 12:32:44,981 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2023-12-02 12:32:44,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:32:45,442 INFO L225 Difference]: With dead ends: 131170 [2023-12-02 12:32:45,442 INFO L226 Difference]: Without dead ends: 131145 [2023-12-02 12:32:45,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2659 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=2009, Invalid=7111, Unknown=0, NotChecked=0, Total=9120 [2023-12-02 12:32:45,443 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 1197 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 2976 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 3019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-02 12:32:45,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1197 Valid, 1073 Invalid, 3019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 2976 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-02 12:32:45,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131145 states. [2023-12-02 12:32:47,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131145 to 37994. [2023-12-02 12:32:47,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37994 states, 37992 states have (on average 3.0293482838492314) internal successors, (115091), 37993 states have internal predecessors, (115091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:32:47,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37994 states to 37994 states and 115091 transitions. [2023-12-02 12:32:47,236 INFO L78 Accepts]: Start accepts. Automaton has 37994 states and 115091 transitions. Word has length 42 [2023-12-02 12:32:47,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:32:47,237 INFO L495 AbstractCegarLoop]: Abstraction has 37994 states and 115091 transitions. [2023-12-02 12:32:47,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:32:47,237 INFO L276 IsEmpty]: Start isEmpty. Operand 37994 states and 115091 transitions. [2023-12-02 12:32:47,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-02 12:32:47,258 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:32:47,258 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:32:47,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (167)] Ended with exit code 0 [2023-12-02 12:32:47,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (168)] Ended with exit code 0 [2023-12-02 12:32:47,663 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Ended with exit code 0 [2023-12-02 12:32:47,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 167 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,168 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,169 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:32:47,859 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:32:47,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:32:47,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1915885266, now seen corresponding path program 5 times [2023-12-02 12:32:47,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:32:47,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [593520177] [2023-12-02 12:32:47,860 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-02 12:32:47,860 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:32:47,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:32:47,861 INFO L229 MonitoredProcess]: Starting monitored process 170 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:32:47,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (170)] Waiting until timeout for monitored process [2023-12-02 12:32:47,986 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-12-02 12:32:47,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:32:47,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 12:32:47,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:32:48,286 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:32:48,286 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:32:48,945 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:32:48,945 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:32:48,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [593520177] [2023-12-02 12:32:48,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [593520177] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:32:48,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [684148248] [2023-12-02 12:32:48,945 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-02 12:32:48,945 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 12:32:48,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 12:32:48,946 INFO L229 MonitoredProcess]: Starting monitored process 171 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 12:32:48,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (171)] Waiting until timeout for monitored process [2023-12-02 12:32:49,217 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-12-02 12:32:49,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:32:49,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 12:32:49,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:32:49,290 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:32:49,290 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:32:49,534 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:32:49,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [684148248] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:32:49,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976781958] [2023-12-02 12:32:49,535 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-02 12:32:49,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:32:49,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:32:49,536 INFO L229 MonitoredProcess]: Starting monitored process 172 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:32:49,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Waiting until timeout for monitored process [2023-12-02 12:32:49,673 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-12-02 12:32:49,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:32:49,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 12:32:49,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:32:49,812 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:32:49,812 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:32:50,038 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:32:50,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976781958] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:32:50,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 12:32:50,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 14, 14] total 26 [2023-12-02 12:32:50,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463324210] [2023-12-02 12:32:50,039 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 12:32:50,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-02 12:32:50,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:32:50,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-02 12:32:50,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=592, Unknown=0, NotChecked=0, Total=702 [2023-12-02 12:32:50,040 INFO L87 Difference]: Start difference. First operand 37994 states and 115091 transitions. Second operand has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:32:59,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:32:59,815 INFO L93 Difference]: Finished difference Result 124951 states and 354394 transitions. [2023-12-02 12:32:59,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2023-12-02 12:32:59,815 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2023-12-02 12:32:59,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:33:00,185 INFO L225 Difference]: With dead ends: 124951 [2023-12-02 12:33:00,185 INFO L226 Difference]: Without dead ends: 124926 [2023-12-02 12:33:00,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3368 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=2477, Invalid=8235, Unknown=0, NotChecked=0, Total=10712 [2023-12-02 12:33:00,186 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 1685 mSDsluCounter, 1029 mSDsCounter, 0 mSdLazyCounter, 3331 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1685 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 3390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 3331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-02 12:33:00,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1685 Valid, 1110 Invalid, 3390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 3331 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-02 12:33:00,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124926 states. [2023-12-02 12:33:01,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124926 to 39751. [2023-12-02 12:33:01,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39751 states, 39749 states have (on average 3.0362021686080154) internal successors, (120686), 39750 states have internal predecessors, (120686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:33:01,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39751 states to 39751 states and 120686 transitions. [2023-12-02 12:33:01,837 INFO L78 Accepts]: Start accepts. Automaton has 39751 states and 120686 transitions. Word has length 42 [2023-12-02 12:33:01,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:33:01,837 INFO L495 AbstractCegarLoop]: Abstraction has 39751 states and 120686 transitions. [2023-12-02 12:33:01,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:33:01,837 INFO L276 IsEmpty]: Start isEmpty. Operand 39751 states and 120686 transitions. [2023-12-02 12:33:01,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-02 12:33:01,858 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:33:01,858 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:33:01,861 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (171)] Ended with exit code 0 [2023-12-02 12:33:02,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (170)] Ended with exit code 0 [2023-12-02 12:33:02,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Ended with exit code 0 [2023-12-02 12:33:02,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 171 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,170 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,172 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:33:02,459 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:33:02,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:33:02,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1411421206, now seen corresponding path program 6 times [2023-12-02 12:33:02,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:33:02,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1547636117] [2023-12-02 12:33:02,459 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-02 12:33:02,459 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:33:02,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:33:02,460 INFO L229 MonitoredProcess]: Starting monitored process 173 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:33:02,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (173)] Waiting until timeout for monitored process [2023-12-02 12:33:02,600 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-02 12:33:02,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:33:02,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 12:33:02,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:33:02,762 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:33:02,763 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:33:03,626 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:33:03,626 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:33:03,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1547636117] [2023-12-02 12:33:03,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1547636117] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:33:03,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1674280989] [2023-12-02 12:33:03,627 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-02 12:33:03,627 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 12:33:03,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 12:33:03,628 INFO L229 MonitoredProcess]: Starting monitored process 174 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 12:33:03,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (174)] Waiting until timeout for monitored process [2023-12-02 12:33:04,029 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-02 12:33:04,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:33:04,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 12:33:04,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:33:04,080 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:33:04,081 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:33:04,330 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:33:04,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1674280989] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:33:04,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846746247] [2023-12-02 12:33:04,331 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-02 12:33:04,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:33:04,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:33:04,332 INFO L229 MonitoredProcess]: Starting monitored process 175 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:33:04,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Waiting until timeout for monitored process [2023-12-02 12:33:04,483 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-02 12:33:04,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:33:04,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 12:33:04,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:33:04,534 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:33:04,534 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:33:04,788 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:33:04,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846746247] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:33:04,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 12:33:04,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 14, 14] total 26 [2023-12-02 12:33:04,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888636188] [2023-12-02 12:33:04,788 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 12:33:04,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-02 12:33:04,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:33:04,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-02 12:33:04,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702 [2023-12-02 12:33:04,789 INFO L87 Difference]: Start difference. First operand 39751 states and 120686 transitions. Second operand has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:33:12,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:33:12,519 INFO L93 Difference]: Finished difference Result 81424 states and 229925 transitions. [2023-12-02 12:33:12,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-12-02 12:33:12,520 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2023-12-02 12:33:12,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:33:12,677 INFO L225 Difference]: With dead ends: 81424 [2023-12-02 12:33:12,677 INFO L226 Difference]: Without dead ends: 81375 [2023-12-02 12:33:12,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2428 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=2024, Invalid=6348, Unknown=0, NotChecked=0, Total=8372 [2023-12-02 12:33:12,678 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 1192 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 3229 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 3257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 3229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:33:12,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1192 Valid, 1022 Invalid, 3257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 3229 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-02 12:33:12,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81375 states. [2023-12-02 12:33:13,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81375 to 38069. [2023-12-02 12:33:13,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38069 states, 38067 states have (on average 3.0371975727007645) internal successors, (115617), 38068 states have internal predecessors, (115617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:33:13,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38069 states to 38069 states and 115617 transitions. [2023-12-02 12:33:13,889 INFO L78 Accepts]: Start accepts. Automaton has 38069 states and 115617 transitions. Word has length 42 [2023-12-02 12:33:13,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:33:13,889 INFO L495 AbstractCegarLoop]: Abstraction has 38069 states and 115617 transitions. [2023-12-02 12:33:13,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:33:13,889 INFO L276 IsEmpty]: Start isEmpty. Operand 38069 states and 115617 transitions. [2023-12-02 12:33:13,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-02 12:33:13,904 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:33:13,904 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:33:13,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (173)] Ended with exit code 0 [2023-12-02 12:33:14,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (174)] Ended with exit code 0 [2023-12-02 12:33:14,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Forceful destruction successful, exit code 0 [2023-12-02 12:33:14,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 173 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,174 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,175 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:33:14,505 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:33:14,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:33:14,505 INFO L85 PathProgramCache]: Analyzing trace with hash -686631762, now seen corresponding path program 3 times [2023-12-02 12:33:14,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:33:14,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1071812776] [2023-12-02 12:33:14,506 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 12:33:14,506 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:33:14,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:33:14,507 INFO L229 MonitoredProcess]: Starting monitored process 176 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:33:14,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (176)] Waiting until timeout for monitored process [2023-12-02 12:33:14,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 12:33:14,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:33:14,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 12:33:14,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:33:15,027 WARN L876 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| (_ bv0 32))) (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_164| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_156| (_ BitVec 32))) (and (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_164| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_156| (_ bv0 1)) |c_#valid|) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_164|) (_ bv0 1)) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_164| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_156|) (_ bv0 1))))) is different from true [2023-12-02 12:33:15,038 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 10 not checked. [2023-12-02 12:33:15,039 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:33:15,129 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-12-02 12:33:15,129 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:33:15,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1071812776] [2023-12-02 12:33:15,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1071812776] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:33:15,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [737049457] [2023-12-02 12:33:15,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 12:33:15,129 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 12:33:15,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 12:33:15,130 INFO L229 MonitoredProcess]: Starting monitored process 177 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 12:33:15,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (177)] Waiting until timeout for monitored process [2023-12-02 12:33:15,378 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 12:33:15,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:33:15,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 12:33:15,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:33:15,882 WARN L876 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_165| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_157| (_ BitVec 32))) (and (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_165| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_157| (_ bv0 1)) |c_#valid|) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_165| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_157|) (_ bv0 1)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_165|) (_ bv0 1)))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| (_ bv0 32)))) is different from true [2023-12-02 12:33:15,893 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 10 not checked. [2023-12-02 12:33:15,893 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:33:15,966 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-12-02 12:33:15,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [737049457] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:33:15,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424320209] [2023-12-02 12:33:15,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 12:33:15,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:33:15,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:33:15,967 INFO L229 MonitoredProcess]: Starting monitored process 178 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:33:15,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (178)] Waiting until timeout for monitored process [2023-12-02 12:33:16,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 12:33:16,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:33:16,112 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 12:33:16,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:33:16,215 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-12-02 12:33:16,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 14 [2023-12-02 12:33:16,238 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-12-02 12:33:16,238 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:33:16,320 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-12-02 12:33:16,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424320209] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:33:16,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 12:33:16,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2, 2, 2, 2] total 6 [2023-12-02 12:33:16,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771404172] [2023-12-02 12:33:16,320 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 12:33:16,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 12:33:16,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:33:16,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 12:33:16,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=21, Unknown=2, NotChecked=18, Total=56 [2023-12-02 12:33:16,321 INFO L87 Difference]: Start difference. First operand 38069 states and 115617 transitions. Second operand has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:33:16,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:33:16,588 INFO L93 Difference]: Finished difference Result 39122 states and 117693 transitions. [2023-12-02 12:33:16,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 12:33:16,589 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2023-12-02 12:33:16,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:33:16,644 INFO L225 Difference]: With dead ends: 39122 [2023-12-02 12:33:16,644 INFO L226 Difference]: Without dead ends: 34480 [2023-12-02 12:33:16,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 251 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=29, Unknown=2, NotChecked=22, Total=72 [2023-12-02 12:33:16,644 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 36 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 84 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:33:16,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 35 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 84 Unchecked, 0.1s Time] [2023-12-02 12:33:16,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34480 states. [2023-12-02 12:33:16,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34480 to 7812. [2023-12-02 12:33:16,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7812 states, 7811 states have (on average 2.7031109973114837) internal successors, (21114), 7811 states have internal predecessors, (21114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:33:16,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7812 states to 7812 states and 21114 transitions. [2023-12-02 12:33:16,996 INFO L78 Accepts]: Start accepts. Automaton has 7812 states and 21114 transitions. Word has length 44 [2023-12-02 12:33:16,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:33:16,996 INFO L495 AbstractCegarLoop]: Abstraction has 7812 states and 21114 transitions. [2023-12-02 12:33:16,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:33:16,996 INFO L276 IsEmpty]: Start isEmpty. Operand 7812 states and 21114 transitions. [2023-12-02 12:33:17,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-02 12:33:17,002 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:33:17,002 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:33:17,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (177)] Ended with exit code 0 [2023-12-02 12:33:17,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (178)] Forceful destruction successful, exit code 0 [2023-12-02 12:33:17,404 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (176)] Ended with exit code 0 [2023-12-02 12:33:17,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 177 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,178 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,176 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:33:17,603 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:33:17,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:33:17,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1387374187, now seen corresponding path program 7 times [2023-12-02 12:33:17,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:33:17,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1785158193] [2023-12-02 12:33:17,603 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 12:33:17,603 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:33:17,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:33:17,604 INFO L229 MonitoredProcess]: Starting monitored process 179 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:33:17,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (179)] Waiting until timeout for monitored process [2023-12-02 12:33:17,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:33:17,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-02 12:33:17,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:33:18,037 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 1 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:33:18,037 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:33:18,943 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:33:18,944 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:33:18,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1785158193] [2023-12-02 12:33:18,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1785158193] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:33:18,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2111349033] [2023-12-02 12:33:18,944 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 12:33:18,944 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 12:33:18,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 12:33:18,945 INFO L229 MonitoredProcess]: Starting monitored process 180 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 12:33:18,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (180)] Waiting until timeout for monitored process [2023-12-02 12:33:19,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:33:19,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-02 12:33:19,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:33:19,286 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 1 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:33:19,286 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:33:19,470 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:33:19,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2111349033] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:33:19,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730731311] [2023-12-02 12:33:19,470 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 12:33:19,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:33:19,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:33:19,471 INFO L229 MonitoredProcess]: Starting monitored process 181 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:33:19,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (181)] Waiting until timeout for monitored process [2023-12-02 12:33:19,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:33:19,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-02 12:33:19,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:33:19,763 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 1 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:33:19,763 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:33:19,995 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:33:19,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730731311] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:33:19,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 12:33:19,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17, 17, 17, 17] total 32 [2023-12-02 12:33:19,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307759504] [2023-12-02 12:33:19,996 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 12:33:19,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-02 12:33:19,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:33:19,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-02 12:33:19,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=898, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 12:33:19,996 INFO L87 Difference]: Start difference. First operand 7812 states and 21114 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:33:27,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:33:27,284 INFO L93 Difference]: Finished difference Result 19792 states and 48220 transitions. [2023-12-02 12:33:27,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-12-02 12:33:27,285 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-02 12:33:27,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:33:27,314 INFO L225 Difference]: With dead ends: 19792 [2023-12-02 12:33:27,314 INFO L226 Difference]: Without dead ends: 18156 [2023-12-02 12:33:27,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1748 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=1698, Invalid=6492, Unknown=0, NotChecked=0, Total=8190 [2023-12-02 12:33:27,315 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 779 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 2100 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 2123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:33:27,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 907 Invalid, 2123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2100 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-02 12:33:27,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18156 states. [2023-12-02 12:33:27,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18156 to 9871. [2023-12-02 12:33:27,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9871 states, 9870 states have (on average 2.5900709219858156) internal successors, (25564), 9870 states have internal predecessors, (25564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:33:27,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9871 states to 9871 states and 25564 transitions. [2023-12-02 12:33:27,563 INFO L78 Accepts]: Start accepts. Automaton has 9871 states and 25564 transitions. Word has length 51 [2023-12-02 12:33:27,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:33:27,563 INFO L495 AbstractCegarLoop]: Abstraction has 9871 states and 25564 transitions. [2023-12-02 12:33:27,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:33:27,563 INFO L276 IsEmpty]: Start isEmpty. Operand 9871 states and 25564 transitions. [2023-12-02 12:33:27,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-02 12:33:27,572 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:33:27,572 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:33:27,574 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (179)] Ended with exit code 0 [2023-12-02 12:33:27,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (181)] Forceful destruction successful, exit code 0 [2023-12-02 12:33:27,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (180)] Forceful destruction successful, exit code 0 [2023-12-02 12:33:28,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 179 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,181 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,180 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 12:33:28,173 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:33:28,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:33:28,174 INFO L85 PathProgramCache]: Analyzing trace with hash 93499891, now seen corresponding path program 8 times [2023-12-02 12:33:28,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:33:28,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [635167930] [2023-12-02 12:33:28,174 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:33:28,174 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:33:28,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:33:28,175 INFO L229 MonitoredProcess]: Starting monitored process 182 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:33:28,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (182)] Waiting until timeout for monitored process [2023-12-02 12:33:28,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 12:33:28,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:33:28,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-02 12:33:28,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:33:28,587 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:33:28,587 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:33:29,490 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:33:29,490 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:33:29,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [635167930] [2023-12-02 12:33:29,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [635167930] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:33:29,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2101992121] [2023-12-02 12:33:29,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:33:29,491 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 12:33:29,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 12:33:29,491 INFO L229 MonitoredProcess]: Starting monitored process 183 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 12:33:29,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (183)] Waiting until timeout for monitored process [2023-12-02 12:33:29,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 12:33:29,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:33:29,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-02 12:33:29,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:33:29,904 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:33:29,904 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:33:30,157 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:33:30,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2101992121] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:33:30,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213462363] [2023-12-02 12:33:30,158 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:33:30,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:33:30,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:33:30,159 INFO L229 MonitoredProcess]: Starting monitored process 184 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:33:30,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (184)] Waiting until timeout for monitored process [2023-12-02 12:33:30,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 12:33:30,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:33:30,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-02 12:33:30,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:33:30,431 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:33:30,431 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:33:30,685 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:33:30,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213462363] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:33:30,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 12:33:30,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17, 17, 17, 17] total 32 [2023-12-02 12:33:30,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896183980] [2023-12-02 12:33:30,685 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 12:33:30,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-02 12:33:30,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:33:30,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-02 12:33:30,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=906, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 12:33:30,686 INFO L87 Difference]: Start difference. First operand 9871 states and 25564 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:33:38,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:33:38,056 INFO L93 Difference]: Finished difference Result 25546 states and 62035 transitions. [2023-12-02 12:33:38,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-12-02 12:33:38,056 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-02 12:33:38,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:33:38,089 INFO L225 Difference]: With dead ends: 25546 [2023-12-02 12:33:38,089 INFO L226 Difference]: Without dead ends: 23812 [2023-12-02 12:33:38,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2084 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=1845, Invalid=7085, Unknown=0, NotChecked=0, Total=8930 [2023-12-02 12:33:38,090 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 961 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 2094 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 2134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-02 12:33:38,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [961 Valid, 913 Invalid, 2134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2094 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-02 12:33:38,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23812 states. [2023-12-02 12:33:38,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23812 to 11130. [2023-12-02 12:33:38,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11130 states, 11129 states have (on average 2.650372899631593) internal successors, (29496), 11129 states have internal predecessors, (29496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:33:38,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11130 states to 11130 states and 29496 transitions. [2023-12-02 12:33:38,322 INFO L78 Accepts]: Start accepts. Automaton has 11130 states and 29496 transitions. Word has length 51 [2023-12-02 12:33:38,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:33:38,323 INFO L495 AbstractCegarLoop]: Abstraction has 11130 states and 29496 transitions. [2023-12-02 12:33:38,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:33:38,323 INFO L276 IsEmpty]: Start isEmpty. Operand 11130 states and 29496 transitions. [2023-12-02 12:33:38,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-02 12:33:38,330 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:33:38,330 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:33:38,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (184)] Ended with exit code 0 [2023-12-02 12:33:38,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (182)] Ended with exit code 0 [2023-12-02 12:33:38,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (183)] Ended with exit code 0 [2023-12-02 12:33:38,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 184 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,182 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,183 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 12:33:38,930 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:33:38,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:33:38,931 INFO L85 PathProgramCache]: Analyzing trace with hash -493171265, now seen corresponding path program 9 times [2023-12-02 12:33:38,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:33:38,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [369312495] [2023-12-02 12:33:38,931 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 12:33:38,931 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:33:38,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:33:38,932 INFO L229 MonitoredProcess]: Starting monitored process 185 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:33:38,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (185)] Waiting until timeout for monitored process [2023-12-02 12:33:39,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-12-02 12:33:39,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:33:39,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-02 12:33:39,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:33:39,319 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:33:39,319 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:33:40,352 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:33:40,353 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:33:40,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [369312495] [2023-12-02 12:33:40,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [369312495] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:33:40,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [877682221] [2023-12-02 12:33:40,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 12:33:40,353 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 12:33:40,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 12:33:40,354 INFO L229 MonitoredProcess]: Starting monitored process 186 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 12:33:40,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (186)] Waiting until timeout for monitored process [2023-12-02 12:33:40,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-12-02 12:33:40,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:33:40,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-02 12:33:40,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:33:40,742 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:33:40,742 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:33:41,042 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:33:41,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [877682221] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:33:41,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986722454] [2023-12-02 12:33:41,042 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 12:33:41,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:33:41,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:33:41,043 INFO L229 MonitoredProcess]: Starting monitored process 187 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:33:41,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (187)] Waiting until timeout for monitored process [2023-12-02 12:33:41,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-12-02 12:33:41,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:33:41,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-02 12:33:41,248 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:33:41,346 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:33:41,346 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:33:41,646 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:33:41,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986722454] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:33:41,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 12:33:41,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17, 17, 17, 17] total 32 [2023-12-02 12:33:41,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666392930] [2023-12-02 12:33:41,646 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 12:33:41,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-02 12:33:41,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:33:41,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-02 12:33:41,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=910, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 12:33:41,647 INFO L87 Difference]: Start difference. First operand 11130 states and 29496 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:33:51,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:33:51,354 INFO L93 Difference]: Finished difference Result 26259 states and 68144 transitions. [2023-12-02 12:33:51,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-12-02 12:33:51,355 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-02 12:33:51,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:33:51,401 INFO L225 Difference]: With dead ends: 26259 [2023-12-02 12:33:51,401 INFO L226 Difference]: Without dead ends: 24489 [2023-12-02 12:33:51,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2792 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=2218, Invalid=8288, Unknown=0, NotChecked=0, Total=10506 [2023-12-02 12:33:51,402 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 1790 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 2229 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1790 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 2353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 2229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-02 12:33:51,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1790 Valid, 899 Invalid, 2353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 2229 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-02 12:33:51,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24489 states. [2023-12-02 12:33:51,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24489 to 8635. [2023-12-02 12:33:51,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8635 states, 8634 states have (on average 2.972550382209868) internal successors, (25665), 8634 states have internal predecessors, (25665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:33:51,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8635 states to 8635 states and 25665 transitions. [2023-12-02 12:33:51,716 INFO L78 Accepts]: Start accepts. Automaton has 8635 states and 25665 transitions. Word has length 51 [2023-12-02 12:33:51,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:33:51,716 INFO L495 AbstractCegarLoop]: Abstraction has 8635 states and 25665 transitions. [2023-12-02 12:33:51,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:33:51,716 INFO L276 IsEmpty]: Start isEmpty. Operand 8635 states and 25665 transitions. [2023-12-02 12:33:51,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-02 12:33:51,722 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:33:51,723 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:33:51,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (186)] Ended with exit code 0 [2023-12-02 12:33:51,928 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (187)] Ended with exit code 0 [2023-12-02 12:33:52,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (185)] Forceful destruction successful, exit code 0 [2023-12-02 12:33:52,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 186 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,187 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,185 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:33:52,324 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:33:52,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:33:52,324 INFO L85 PathProgramCache]: Analyzing trace with hash -91832761, now seen corresponding path program 10 times [2023-12-02 12:33:52,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:33:52,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1047196988] [2023-12-02 12:33:52,324 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 12:33:52,324 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:33:52,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:33:52,325 INFO L229 MonitoredProcess]: Starting monitored process 188 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:33:52,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (188)] Waiting until timeout for monitored process [2023-12-02 12:33:52,450 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 12:33:52,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:33:52,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-02 12:33:52,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:33:52,678 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:33:52,678 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:33:53,873 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:33:53,873 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:33:53,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1047196988] [2023-12-02 12:33:53,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1047196988] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:33:53,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [567106581] [2023-12-02 12:33:53,873 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 12:33:53,873 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 12:33:53,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 12:33:53,874 INFO L229 MonitoredProcess]: Starting monitored process 189 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 12:33:53,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (189)] Waiting until timeout for monitored process [2023-12-02 12:33:54,150 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 12:33:54,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:33:54,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-02 12:33:54,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:33:54,217 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:33:54,217 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:33:54,534 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:33:54,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [567106581] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:33:54,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172806210] [2023-12-02 12:33:54,534 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 12:33:54,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:33:54,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:33:54,535 INFO L229 MonitoredProcess]: Starting monitored process 190 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:33:54,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (190)] Waiting until timeout for monitored process [2023-12-02 12:33:54,685 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 12:33:54,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:33:54,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-02 12:33:54,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:33:54,761 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:33:54,761 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:33:55,081 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:33:55,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172806210] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:33:55,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 12:33:55,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17, 17, 17, 17] total 32 [2023-12-02 12:33:55,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480276154] [2023-12-02 12:33:55,081 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 12:33:55,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-02 12:33:55,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:33:55,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-02 12:33:55,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=886, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 12:33:55,082 INFO L87 Difference]: Start difference. First operand 8635 states and 25665 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:34:07,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:34:07,401 INFO L93 Difference]: Finished difference Result 12123 states and 34959 transitions. [2023-12-02 12:34:07,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-12-02 12:34:07,401 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-02 12:34:07,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:34:07,415 INFO L225 Difference]: With dead ends: 12123 [2023-12-02 12:34:07,416 INFO L226 Difference]: Without dead ends: 10520 [2023-12-02 12:34:07,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2907 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=2352, Invalid=8154, Unknown=0, NotChecked=0, Total=10506 [2023-12-02 12:34:07,417 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 1977 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 2650 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1977 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 2715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 2650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-02 12:34:07,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1977 Valid, 992 Invalid, 2715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 2650 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-02 12:34:07,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10520 states. [2023-12-02 12:34:07,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10520 to 898. [2023-12-02 12:34:07,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 898 states, 897 states have (on average 2.657748049052397) internal successors, (2384), 897 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:34:07,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 2384 transitions. [2023-12-02 12:34:07,473 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 2384 transitions. Word has length 51 [2023-12-02 12:34:07,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:34:07,473 INFO L495 AbstractCegarLoop]: Abstraction has 898 states and 2384 transitions. [2023-12-02 12:34:07,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:34:07,474 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 2384 transitions. [2023-12-02 12:34:07,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-02 12:34:07,474 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:34:07,474 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:34:07,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (190)] Ended with exit code 0 [2023-12-02 12:34:07,677 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (188)] Ended with exit code 0 [2023-12-02 12:34:07,877 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (189)] Ended with exit code 0 [2023-12-02 12:34:08,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 190 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,188 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,189 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 12:34:08,075 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:34:08,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:34:08,075 INFO L85 PathProgramCache]: Analyzing trace with hash -868589094, now seen corresponding path program 11 times [2023-12-02 12:34:08,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:34:08,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [245698938] [2023-12-02 12:34:08,076 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-02 12:34:08,076 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:34:08,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:34:08,077 INFO L229 MonitoredProcess]: Starting monitored process 191 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:34:08,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (191)] Waiting until timeout for monitored process [2023-12-02 12:34:08,238 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-12-02 12:34:08,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:34:08,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-02 12:34:08,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:34:08,662 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 0 proven. 375 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 12:34:08,662 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:34:11,364 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 0 proven. 375 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 12:34:11,364 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:34:11,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [245698938] [2023-12-02 12:34:11,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [245698938] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:34:11,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1263841725] [2023-12-02 12:34:11,365 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-02 12:34:11,365 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 12:34:11,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 12:34:11,366 INFO L229 MonitoredProcess]: Starting monitored process 192 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 12:34:11,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (192)] Waiting until timeout for monitored process [2023-12-02 12:34:11,728 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-12-02 12:34:11,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:34:11,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-02 12:34:11,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:34:11,837 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 0 proven. 375 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 12:34:11,837 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:34:12,393 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 0 proven. 375 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 12:34:12,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1263841725] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:34:12,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889061410] [2023-12-02 12:34:12,393 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-02 12:34:12,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:34:12,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:34:12,394 INFO L229 MonitoredProcess]: Starting monitored process 193 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:34:12,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (193)] Waiting until timeout for monitored process [2023-12-02 12:34:12,647 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-12-02 12:34:12,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:34:12,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-02 12:34:12,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:34:12,757 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 0 proven. 375 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 12:34:12,758 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:34:13,289 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 0 proven. 375 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 12:34:13,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889061410] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:34:13,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 12:34:13,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27, 27, 27, 27] total 52 [2023-12-02 12:34:13,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557998577] [2023-12-02 12:34:13,289 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 12:34:13,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-02 12:34:13,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:34:13,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-02 12:34:13,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=389, Invalid=2367, Unknown=0, NotChecked=0, Total=2756 [2023-12-02 12:34:13,291 INFO L87 Difference]: Start difference. First operand 898 states and 2384 transitions. Second operand has 53 states, 53 states have (on average 3.0754716981132075) internal successors, (163), 52 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:34:54,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:34:54,565 INFO L93 Difference]: Finished difference Result 3280 states and 8792 transitions. [2023-12-02 12:34:54,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2023-12-02 12:34:54,566 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 3.0754716981132075) internal successors, (163), 52 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2023-12-02 12:34:54,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:34:54,569 INFO L225 Difference]: With dead ends: 3280 [2023-12-02 12:34:54,569 INFO L226 Difference]: Without dead ends: 2626 [2023-12-02 12:34:54,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 447 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7033 ImplicationChecksByTransitivity, 39.4s TimeCoverageRelationStatistics Valid=5317, Invalid=20443, Unknown=0, NotChecked=0, Total=25760 [2023-12-02 12:34:54,571 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 2631 mSDsluCounter, 2431 mSDsCounter, 0 mSdLazyCounter, 6433 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2631 SdHoareTripleChecker+Valid, 2534 SdHoareTripleChecker+Invalid, 6492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 6433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-02 12:34:54,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2631 Valid, 2534 Invalid, 6492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 6433 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-02 12:34:54,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2626 states. [2023-12-02 12:34:54,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2626 to 1699. [2023-12-02 12:34:54,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1699 states, 1698 states have (on average 2.760895170789164) internal successors, (4688), 1698 states have internal predecessors, (4688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:34:54,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 4688 transitions. [2023-12-02 12:34:54,597 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 4688 transitions. Word has length 84 [2023-12-02 12:34:54,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:34:54,597 INFO L495 AbstractCegarLoop]: Abstraction has 1699 states and 4688 transitions. [2023-12-02 12:34:54,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 3.0754716981132075) internal successors, (163), 52 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:34:54,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 4688 transitions. [2023-12-02 12:34:54,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-02 12:34:54,599 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:34:54,599 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:34:54,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (192)] Ended with exit code 0 [2023-12-02 12:34:54,805 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (193)] Ended with exit code 0 [2023-12-02 12:34:55,002 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (191)] Ended with exit code 0 [2023-12-02 12:34:55,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 192 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,193 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,191 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:34:55,200 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:34:55,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:34:55,200 INFO L85 PathProgramCache]: Analyzing trace with hash 408973303, now seen corresponding path program 12 times [2023-12-02 12:34:55,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:34:55,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1585357668] [2023-12-02 12:34:55,200 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-02 12:34:55,201 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:34:55,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:34:55,201 INFO L229 MonitoredProcess]: Starting monitored process 194 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:34:55,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (194)] Waiting until timeout for monitored process [2023-12-02 12:34:55,420 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-12-02 12:34:55,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:34:55,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-02 12:34:55,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:34:55,939 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 0 proven. 480 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 12:34:55,939 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:34:59,516 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 0 proven. 480 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 12:34:59,516 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:34:59,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1585357668] [2023-12-02 12:34:59,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1585357668] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:34:59,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [281337988] [2023-12-02 12:34:59,517 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-02 12:34:59,517 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 12:34:59,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 12:34:59,518 INFO L229 MonitoredProcess]: Starting monitored process 195 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 12:34:59,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (195)] Waiting until timeout for monitored process [2023-12-02 12:34:59,980 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-12-02 12:34:59,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:34:59,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-02 12:34:59,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:35:00,100 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 0 proven. 480 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 12:35:00,100 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:35:00,718 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 0 proven. 480 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 12:35:00,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [281337988] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:35:00,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615407070] [2023-12-02 12:35:00,718 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-02 12:35:00,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:35:00,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:35:00,719 INFO L229 MonitoredProcess]: Starting monitored process 196 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:35:00,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (196)] Waiting until timeout for monitored process [2023-12-02 12:35:00,953 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-12-02 12:35:00,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:35:00,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-02 12:35:00,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:35:01,067 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 0 proven. 480 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 12:35:01,067 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:35:01,628 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 0 proven. 480 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 12:35:01,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615407070] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:35:01,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 12:35:01,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30, 30, 30, 30] total 58 [2023-12-02 12:35:01,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764719722] [2023-12-02 12:35:01,629 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 12:35:01,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-12-02 12:35:01,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:35:01,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-12-02 12:35:01,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=2959, Unknown=0, NotChecked=0, Total=3422 [2023-12-02 12:35:01,630 INFO L87 Difference]: Start difference. First operand 1699 states and 4688 transitions. Second operand has 59 states, 59 states have (on average 3.0677966101694913) internal successors, (181), 58 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:35:30,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:35:30,528 INFO L93 Difference]: Finished difference Result 3424 states and 9191 transitions. [2023-12-02 12:35:30,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2023-12-02 12:35:30,528 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 3.0677966101694913) internal successors, (181), 58 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-02 12:35:30,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:35:30,531 INFO L225 Difference]: With dead ends: 3424 [2023-12-02 12:35:30,531 INFO L226 Difference]: Without dead ends: 2770 [2023-12-02 12:35:30,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 654 GetRequests, 495 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6362 ImplicationChecksByTransitivity, 28.0s TimeCoverageRelationStatistics Valid=4818, Invalid=20942, Unknown=0, NotChecked=0, Total=25760 [2023-12-02 12:35:30,533 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 3738 mSDsluCounter, 2831 mSDsCounter, 0 mSdLazyCounter, 7486 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3738 SdHoareTripleChecker+Valid, 2946 SdHoareTripleChecker+Invalid, 7582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 7486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:35:30,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3738 Valid, 2946 Invalid, 7582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 7486 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-02 12:35:30,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2770 states. [2023-12-02 12:35:30,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2770 to 1312. [2023-12-02 12:35:30,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1312 states, 1311 states have (on average 2.672006102212052) internal successors, (3503), 1311 states have internal predecessors, (3503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:35:30,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 3503 transitions. [2023-12-02 12:35:30,555 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 3503 transitions. Word has length 93 [2023-12-02 12:35:30,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:35:30,555 INFO L495 AbstractCegarLoop]: Abstraction has 1312 states and 3503 transitions. [2023-12-02 12:35:30,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 3.0677966101694913) internal successors, (181), 58 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:35:30,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 3503 transitions. [2023-12-02 12:35:30,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-02 12:35:30,557 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:35:30,557 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:35:30,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (194)] Ended with exit code 0 [2023-12-02 12:35:30,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (196)] Forceful destruction successful, exit code 0 [2023-12-02 12:35:30,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (195)] Ended with exit code 0 [2023-12-02 12:35:31,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 194 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,196 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,195 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 12:35:31,158 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-12-02 12:35:31,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:35:31,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1087722639, now seen corresponding path program 13 times [2023-12-02 12:35:31,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:35:31,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [481418914] [2023-12-02 12:35:31,158 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 12:35:31,158 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:35:31,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:35:31,159 INFO L229 MonitoredProcess]: Starting monitored process 197 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:35:31,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (197)] Waiting until timeout for monitored process [2023-12-02 12:35:31,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 12:35:31,375 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 12:35:31,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 12:35:31,558 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-12-02 12:35:31,558 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 12:35:31,559 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2023-12-02 12:35:31,561 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2023-12-02 12:35:31,561 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2023-12-02 12:35:31,561 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2023-12-02 12:35:31,561 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2023-12-02 12:35:31,561 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2023-12-02 12:35:31,562 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-12-02 12:35:31,562 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-12-02 12:35:31,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (197)] Ended with exit code 0 [2023-12-02 12:35:31,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 197 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:35:31,764 INFO L445 BasicCegarLoop]: Path program histogram: [16, 13, 12, 12, 9, 8, 8, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:35:31,768 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-02 12:35:31,768 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 12:35:31,841 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated [2023-12-02 12:35:31,843 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre7 could not be translated [2023-12-02 12:35:31,883 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:35:31 BasicIcfg [2023-12-02 12:35:31,883 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 12:35:31,884 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 12:35:31,884 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 12:35:31,884 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 12:35:31,884 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:30:42" (3/4) ... [2023-12-02 12:35:31,886 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 12:35:31,887 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 12:35:31,887 INFO L158 Benchmark]: Toolchain (without parser) took 290879.24ms. Allocated memory was 96.5MB in the beginning and 4.8GB in the end (delta: 4.7GB). Free memory was 71.4MB in the beginning and 2.9GB in the end (delta: -2.8GB). Peak memory consumption was 1.9GB. Max. memory is 16.1GB. [2023-12-02 12:35:31,888 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 67.1MB. Free memory was 43.5MB in the beginning and 43.4MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 12:35:31,888 INFO L158 Benchmark]: CACSL2BoogieTranslator took 460.67ms. Allocated memory is still 96.5MB. Free memory was 71.4MB in the beginning and 50.7MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 12:35:31,888 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.47ms. Allocated memory is still 96.5MB. Free memory was 50.5MB in the beginning and 73.9MB in the end (delta: -23.4MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. [2023-12-02 12:35:31,888 INFO L158 Benchmark]: Boogie Preprocessor took 30.88ms. Allocated memory is still 96.5MB. Free memory was 73.9MB in the beginning and 72.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 12:35:31,888 INFO L158 Benchmark]: RCFGBuilder took 493.71ms. Allocated memory is still 96.5MB. Free memory was 72.3MB in the beginning and 44.9MB in the end (delta: 27.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-12-02 12:35:31,888 INFO L158 Benchmark]: TraceAbstraction took 289831.70ms. Allocated memory was 96.5MB in the beginning and 4.8GB in the end (delta: 4.7GB). Free memory was 44.5MB in the beginning and 2.9GB in the end (delta: -2.8GB). Peak memory consumption was 1.9GB. Max. memory is 16.1GB. [2023-12-02 12:35:31,888 INFO L158 Benchmark]: Witness Printer took 3.54ms. Allocated memory is still 4.8GB. Free memory is still 2.9GB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 12:35:31,889 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 67.1MB. Free memory was 43.5MB in the beginning and 43.4MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 460.67ms. Allocated memory is still 96.5MB. Free memory was 71.4MB in the beginning and 50.7MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.47ms. Allocated memory is still 96.5MB. Free memory was 50.5MB in the beginning and 73.9MB in the end (delta: -23.4MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.88ms. Allocated memory is still 96.5MB. Free memory was 73.9MB in the beginning and 72.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 493.71ms. Allocated memory is still 96.5MB. Free memory was 72.3MB in the beginning and 44.9MB in the end (delta: 27.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 289831.70ms. Allocated memory was 96.5MB in the beginning and 4.8GB in the end (delta: 4.7GB). Free memory was 44.5MB in the beginning and 2.9GB in the end (delta: -2.8GB). Peak memory consumption was 1.9GB. Max. memory is 16.1GB. * Witness Printer took 3.54ms. Allocated memory is still 4.8GB. Free memory is still 2.9GB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre7 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 693]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 693. Possible FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(argc)=47, arg={0:0}, argc=47, argv={50:49}, i=3, id1={5:0}, id2={3:0}, j=6] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(argc)=47, arg={0:0}, arg={0:0}, argc=47, argv={50:49}, i=3, id1={5:0}, id2={3:0}, j=6] [L704] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L716] 0 int condI = i >= (2*20 +6); VAL [\old(argc)=47, arg={0:0}, arg={0:0}, arg={0:0}, argc=47, argv={50:49}, condI=0, i=3, id1={5:0}, id2={3:0}, j=6, k=0] [L696] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=0] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=0, k=1] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=1] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=1, k=2] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=2] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=2, k=3] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=3] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=3, k=4] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=4] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=5] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=5] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=5, k=6] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=6] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=6, k=7] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=7] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=7, k=8] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=8] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=9] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=8, k=9] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=9, k=9] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=10, k=9] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=9] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=26, k=10, k=10] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=26, k=10, k=11] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=28, k=10, k=11] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=28, k=11, k=11] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=28, k=11, k=11] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=28, k=11, k=11] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=28, k=11, k=11] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=28, k=11, k=12] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=30, k=11, k=12] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=30, k=12, k=12] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=30, k=12, k=12] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=30, k=12, k=12] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=30, k=12, k=12] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=30, k=12, k=13] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=32, k=12, k=13] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=32, k=13, k=13] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=32, k=13, k=13] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=32, k=13, k=13] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=32, k=13, k=13] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=32, k=13, k=14] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=34, k=13, k=14] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=34, k=14, k=14] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=34, k=14, k=14] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=34, k=14, k=14] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=34, k=14, k=14] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=34, k=14, k=15] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=36, k=14, k=15] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=36, k=15, k=15] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=36, k=15, k=15] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=36, k=15, k=15] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=36, k=15, k=15] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=36, k=15, k=16] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=38, k=15, k=16] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=38, k=16, k=16] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=38, k=16, k=16] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=38, k=16, k=16] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=38, k=16, k=16] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=38, k=16, k=17] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=40, k=16, k=17] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=40, k=17, k=17] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=40, k=17, k=17] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=40, k=17, k=17] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=40, k=17, k=17] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=40, k=17, k=18] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=42, k=17, k=18] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=42, k=18, k=18] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=42, k=18, k=18] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=42, k=18, k=18] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=42, k=18, k=18] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=42, k=18, k=19] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=44, k=18, k=19] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=44, k=19, k=19] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=44, k=19, k=19] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=44, k=19, k=19] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=44, k=19, k=19] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=46, k=19, k=19] [L719] 0 int condJ = j >= (2*20 +6); VAL [\old(argc)=47, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=47, argv={50:49}, condI=0, condJ=1, i=45, id1={5:0}, id2={3:0}, j=46, k=19, k=19] [L721] COND TRUE 0 condI || condJ [L722] CALL 0 reach_error() [L693] COND FALSE 0 !(0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=46, k=19, k=19] [L693] 0 __assert_fail ("0", "triangular-longest-2.c", 8, __extension__ __PRETTY_FUNCTION__) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=46, k=19, k=19] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 711]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 44 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 289.6s, OverallIterations: 156, TraceHistogramMax: 20, PathProgramHistogramMax: 16, EmptinessCheckTime: 0.3s, AutomataDifference: 162.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 23307 SdHoareTripleChecker+Valid, 36.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23307 mSDsluCounter, 19123 SdHoareTripleChecker+Invalid, 31.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 6904 IncrementalHoareTripleChecker+Unchecked, 16066 mSDsCounter, 698 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 46909 IncrementalHoareTripleChecker+Invalid, 54511 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 698 mSolverCounterUnsat, 3057 mSDtfsCounter, 46909 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7890 GetRequests, 6210 SyntacticMatches, 1 SemanticMatches, 1679 ConstructedPredicates, 123 IntricatePredicates, 0 DeprecatedPredicates, 37118 ImplicationChecksByTransitivity, 131.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39751occurred in iteration=147, InterpolantAutomatonStates: 1604, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 15.5s AutomataMinimizationTime, 155 MinimizatonAttempts, 540446 StatesRemovedByMinimization, 146 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.1s SsaConstructionTime, 8.2s SatisfiabilityAnalysisTime, 48.3s InterpolantComputationTime, 4866 NumberOfCodeBlocks, 4785 NumberOfCodeBlocksAsserted, 334 NumberOfCheckSat, 6930 ConstructedInterpolants, 568 QuantifiedInterpolants, 86493 SizeOfPredicates, 571 NumberOfNonLiveVariables, 16190 ConjunctsInSsa, 1918 ConjunctsInUnsatCore, 255 InterpolantComputations, 135 PerfectInterpolantSequences, 852/10356 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-12-02 12:35:31,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd55864c-f071-4434-b4ee-33e7266a5e32/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample