./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix040_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92c6c0ff-1571-4dff-8028-eeac7f1a584d/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92c6c0ff-1571-4dff-8028-eeac7f1a584d/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92c6c0ff-1571-4dff-8028-eeac7f1a584d/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92c6c0ff-1571-4dff-8028-eeac7f1a584d/bin/utaipan-verify-QoSU8krkJ5/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix040_tso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92c6c0ff-1571-4dff-8028-eeac7f1a584d/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92c6c0ff-1571-4dff-8028-eeac7f1a584d/bin/utaipan-verify-QoSU8krkJ5 --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 26c011a0e45020881b0eb90c07839ec48e6b26942e49028568b078c64e0cf722 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:05:01,129 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:05:01,287 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92c6c0ff-1571-4dff-8028-eeac7f1a584d/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-21 19:05:01,294 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:05:01,297 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:05:01,344 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:05:01,345 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:05:01,345 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:05:01,347 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:05:01,352 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:05:01,353 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:05:01,355 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:05:01,355 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:05:01,357 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:05:01,358 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:05:01,358 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:05:01,359 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:05:01,359 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:05:01,360 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:05:01,360 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:05:01,361 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:05:01,362 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:05:01,362 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 19:05:01,363 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 19:05:01,363 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:05:01,364 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 19:05:01,364 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:05:01,365 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 19:05:01,365 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:05:01,366 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 19:05:01,367 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 19:05:01,367 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 19:05:01,368 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:05:01,368 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 19:05:01,368 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 19:05:01,368 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 19:05:01,369 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:05:01,369 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:05:01,369 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:05:01,370 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:05:01,370 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:05:01,370 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:05:01,370 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:05:01,371 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:05:01,371 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:05:01,372 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:05:01,372 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:05:01,372 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:05:01,372 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_92c6c0ff-1571-4dff-8028-eeac7f1a584d/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92c6c0ff-1571-4dff-8028-eeac7f1a584d/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26c011a0e45020881b0eb90c07839ec48e6b26942e49028568b078c64e0cf722 [2023-11-21 19:05:01,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:05:01,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:05:01,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:05:01,779 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:05:01,780 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:05:01,782 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92c6c0ff-1571-4dff-8028-eeac7f1a584d/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/pthread-wmm/mix040_tso.oepc.i [2023-11-21 19:05:04,836 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:05:05,113 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:05:05,114 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92c6c0ff-1571-4dff-8028-eeac7f1a584d/sv-benchmarks/c/pthread-wmm/mix040_tso.oepc.i [2023-11-21 19:05:05,163 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92c6c0ff-1571-4dff-8028-eeac7f1a584d/bin/utaipan-verify-QoSU8krkJ5/data/50c734331/c2cb2e8f6949423fae6d2ecebaef9479/FLAGb68071da7 [2023-11-21 19:05:05,198 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92c6c0ff-1571-4dff-8028-eeac7f1a584d/bin/utaipan-verify-QoSU8krkJ5/data/50c734331/c2cb2e8f6949423fae6d2ecebaef9479 [2023-11-21 19:05:05,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:05:05,205 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:05:05,209 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:05:05,209 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:05:05,216 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:05:05,216 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:05:05" (1/1) ... [2023-11-21 19:05:05,217 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57b51aa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:05:05, skipping insertion in model container [2023-11-21 19:05:05,218 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:05:05" (1/1) ... [2023-11-21 19:05:05,301 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:05:05,708 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:05:05,726 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:05:05,797 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:05:05,831 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:05:05,832 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:05:05,840 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:05:05,840 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:05:05 WrapperNode [2023-11-21 19:05:05,840 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:05:05,841 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:05:05,842 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:05:05,842 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:05:05,849 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:05:05" (1/1) ... [2023-11-21 19:05:05,887 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:05:05" (1/1) ... [2023-11-21 19:05:05,946 INFO L138 Inliner]: procedures = 177, calls = 72, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 167 [2023-11-21 19:05:05,948 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:05:05,948 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:05:05,949 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:05:05,949 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:05:05,958 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:05:05" (1/1) ... [2023-11-21 19:05:05,959 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:05:05" (1/1) ... [2023-11-21 19:05:05,974 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:05:05" (1/1) ... [2023-11-21 19:05:05,977 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:05:05" (1/1) ... [2023-11-21 19:05:05,999 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:05:05" (1/1) ... [2023-11-21 19:05:06,002 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:05:05" (1/1) ... [2023-11-21 19:05:06,004 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:05:05" (1/1) ... [2023-11-21 19:05:06,022 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:05:05" (1/1) ... [2023-11-21 19:05:06,027 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:05:06,034 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:05:06,034 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:05:06,034 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:05:06,036 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:05:05" (1/1) ... [2023-11-21 19:05:06,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:05:06,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92c6c0ff-1571-4dff-8028-eeac7f1a584d/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:05:06,074 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92c6c0ff-1571-4dff-8028-eeac7f1a584d/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:05:06,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92c6c0ff-1571-4dff-8028-eeac7f1a584d/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:05:06,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 19:05:06,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-21 19:05:06,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:05:06,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 19:05:06,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 19:05:06,111 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-21 19:05:06,111 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-21 19:05:06,112 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-21 19:05:06,112 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-21 19:05:06,112 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-21 19:05:06,112 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-21 19:05:06,112 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-21 19:05:06,113 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-21 19:05:06,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 19:05:06,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-21 19:05:06,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:05:06,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:05:06,117 WARN L212 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 19:05:06,267 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:05:06,269 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:05:06,691 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:05:06,959 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:05:06,959 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 19:05:06,961 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:05:06 BoogieIcfgContainer [2023-11-21 19:05:06,961 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:05:06,964 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:05:06,964 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:05:06,967 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:05:06,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:05:05" (1/3) ... [2023-11-21 19:05:06,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44ad7e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:05:06, skipping insertion in model container [2023-11-21 19:05:06,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:05:05" (2/3) ... [2023-11-21 19:05:06,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44ad7e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:05:06, skipping insertion in model container [2023-11-21 19:05:06,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:05:06" (3/3) ... [2023-11-21 19:05:06,971 INFO L112 eAbstractionObserver]: Analyzing ICFG mix040_tso.oepc.i [2023-11-21 19:05:06,988 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:05:06,989 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-21 19:05:06,989 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 19:05:07,058 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 19:05:07,098 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 67 transitions, 150 flow [2023-11-21 19:05:09,964 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 52960 states, 52945 states have (on average 4.49774294078761) internal successors, (238133), 52959 states have internal predecessors, (238133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:05:10,011 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:05:10,018 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;@7f20f412, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:05:10,018 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-21 19:05:10,140 INFO L276 IsEmpty]: Start isEmpty. Operand has 52960 states, 52945 states have (on average 4.49774294078761) internal successors, (238133), 52959 states have internal predecessors, (238133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:05:10,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-21 19:05:10,148 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:05:10,148 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-21 19:05:10,149 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 19:05:10,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:05:10,156 INFO L85 PathProgramCache]: Analyzing trace with hash 13961, now seen corresponding path program 1 times [2023-11-21 19:05:10,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:05:10,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894877457] [2023-11-21 19:05:10,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:05:10,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:05:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:05:10,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:05:10,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:05:10,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894877457] [2023-11-21 19:05:10,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894877457] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:05:10,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:05:10,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 19:05:10,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756011993] [2023-11-21 19:05:10,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:05:10,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:05:10,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:05:10,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:05:10,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:05:10,647 INFO L87 Difference]: Start difference. First operand has 52960 states, 52945 states have (on average 4.49774294078761) internal successors, (238133), 52959 states have internal predecessors, (238133), 0 states have call successors, (0), 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) [2023-11-21 19:05:12,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:05:12,617 INFO L93 Difference]: Finished difference Result 49431 states and 215277 transitions. [2023-11-21 19:05:12,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:05:12,619 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 [2023-11-21 19:05:12,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:05:13,475 INFO L225 Difference]: With dead ends: 49431 [2023-11-21 19:05:13,475 INFO L226 Difference]: Without dead ends: 49431 [2023-11-21 19:05:13,477 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 [2023-11-21 19:05:13,482 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 52 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:05:13,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 44 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:05:13,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49431 states. [2023-11-21 19:05:15,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49431 to 49431. [2023-11-21 19:05:15,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49431 states, 49417 states have (on average 4.356334864520306) internal successors, (215277), 49430 states have internal predecessors, (215277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:05:17,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49431 states to 49431 states and 215277 transitions. [2023-11-21 19:05:17,058 INFO L78 Accepts]: Start accepts. Automaton has 49431 states and 215277 transitions. Word has length 2 [2023-11-21 19:05:17,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:05:17,058 INFO L495 AbstractCegarLoop]: Abstraction has 49431 states and 215277 transitions. [2023-11-21 19:05:17,059 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) [2023-11-21 19:05:17,059 INFO L276 IsEmpty]: Start isEmpty. Operand 49431 states and 215277 transitions. [2023-11-21 19:05:17,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-21 19:05:17,060 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:05:17,060 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-21 19:05:17,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 19:05:17,061 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 19:05:17,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:05:17,062 INFO L85 PathProgramCache]: Analyzing trace with hash 13962, now seen corresponding path program 1 times [2023-11-21 19:05:17,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:05:17,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133549212] [2023-11-21 19:05:17,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:05:17,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:05:17,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:05:17,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:05:17,198 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:05:17,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133549212] [2023-11-21 19:05:17,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133549212] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:05:17,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:05:17,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 19:05:17,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479108115] [2023-11-21 19:05:17,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:05:17,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:05:17,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:05:17,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:05:17,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:05:17,202 INFO L87 Difference]: Start difference. First operand 49431 states and 215277 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) [2023-11-21 19:05:18,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:05:18,451 INFO L93 Difference]: Finished difference Result 49430 states and 215276 transitions. [2023-11-21 19:05:18,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:05:18,451 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 [2023-11-21 19:05:18,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:05:19,182 INFO L225 Difference]: With dead ends: 49430 [2023-11-21 19:05:19,182 INFO L226 Difference]: Without dead ends: 49430 [2023-11-21 19:05:19,188 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 [2023-11-21 19:05:19,201 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 51 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:05:19,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 45 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:05:19,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49430 states. [2023-11-21 19:05:21,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49430 to 49430. [2023-11-21 19:05:21,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49430 states, 49417 states have (on average 4.356314628569116) internal successors, (215276), 49429 states have internal predecessors, (215276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:05:21,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49430 states to 49430 states and 215276 transitions. [2023-11-21 19:05:21,809 INFO L78 Accepts]: Start accepts. Automaton has 49430 states and 215276 transitions. Word has length 2 [2023-11-21 19:05:21,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:05:21,810 INFO L495 AbstractCegarLoop]: Abstraction has 49430 states and 215276 transitions. [2023-11-21 19:05:21,810 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) [2023-11-21 19:05:21,811 INFO L276 IsEmpty]: Start isEmpty. Operand 49430 states and 215276 transitions. [2023-11-21 19:05:21,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-21 19:05:21,811 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:05:21,812 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 19:05:21,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 19:05:21,813 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 19:05:21,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:05:21,814 INFO L85 PathProgramCache]: Analyzing trace with hash 416345467, now seen corresponding path program 1 times [2023-11-21 19:05:21,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:05:21,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863709774] [2023-11-21 19:05:21,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:05:21,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:05:21,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:05:21,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:05:21,973 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:05:21,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863709774] [2023-11-21 19:05:21,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863709774] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:05:21,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:05:21,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:05:21,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489182163] [2023-11-21 19:05:21,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:05:21,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:05:21,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:05:21,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:05:21,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:05:21,977 INFO L87 Difference]: Start difference. First operand 49430 states and 215276 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2023-11-21 19:05:23,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:05:23,229 INFO L93 Difference]: Finished difference Result 49423 states and 215263 transitions. [2023-11-21 19:05:23,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:05:23,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 [2023-11-21 19:05:23,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:05:23,755 INFO L225 Difference]: With dead ends: 49423 [2023-11-21 19:05:23,755 INFO L226 Difference]: Without dead ends: 49423 [2023-11-21 19:05:23,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:05:23,767 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 48 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:05:23,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 50 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:05:23,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49423 states. [2023-11-21 19:05:25,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49423 to 49423. [2023-11-21 19:05:25,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49423 states, 49411 states have (on average 4.356580518508024) internal successors, (215263), 49422 states have internal predecessors, (215263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:05:26,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49423 states to 49423 states and 215263 transitions. [2023-11-21 19:05:26,683 INFO L78 Accepts]: Start accepts. Automaton has 49423 states and 215263 transitions. Word has length 5 [2023-11-21 19:05:26,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:05:26,683 INFO L495 AbstractCegarLoop]: Abstraction has 49423 states and 215263 transitions. [2023-11-21 19:05:26,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2023-11-21 19:05:26,684 INFO L276 IsEmpty]: Start isEmpty. Operand 49423 states and 215263 transitions. [2023-11-21 19:05:26,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-21 19:05:26,684 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:05:26,685 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 19:05:26,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 19:05:26,685 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 19:05:26,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:05:26,686 INFO L85 PathProgramCache]: Analyzing trace with hash 416345466, now seen corresponding path program 1 times [2023-11-21 19:05:26,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:05:26,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517439981] [2023-11-21 19:05:26,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:05:26,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:05:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:05:26,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:05:26,771 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:05:26,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517439981] [2023-11-21 19:05:26,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517439981] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:05:26,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:05:26,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:05:26,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105983770] [2023-11-21 19:05:26,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:05:26,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:05:26,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:05:26,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:05:26,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:05:26,774 INFO L87 Difference]: Start difference. First operand 49423 states and 215263 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2023-11-21 19:05:27,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:05:27,321 INFO L93 Difference]: Finished difference Result 49416 states and 215250 transitions. [2023-11-21 19:05:27,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:05:27,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 [2023-11-21 19:05:27,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:05:28,595 INFO L225 Difference]: With dead ends: 49416 [2023-11-21 19:05:28,596 INFO L226 Difference]: Without dead ends: 49416 [2023-11-21 19:05:28,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:05:28,605 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 47 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:05:28,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 49 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:05:28,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49416 states. [2023-11-21 19:05:30,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49416 to 49416. [2023-11-21 19:05:30,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49416 states, 49405 states have (on average 4.356846473029045) internal successors, (215250), 49415 states have internal predecessors, (215250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:05:31,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49416 states to 49416 states and 215250 transitions. [2023-11-21 19:05:31,063 INFO L78 Accepts]: Start accepts. Automaton has 49416 states and 215250 transitions. Word has length 5 [2023-11-21 19:05:31,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:05:31,064 INFO L495 AbstractCegarLoop]: Abstraction has 49416 states and 215250 transitions. [2023-11-21 19:05:31,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2023-11-21 19:05:31,064 INFO L276 IsEmpty]: Start isEmpty. Operand 49416 states and 215250 transitions. [2023-11-21 19:05:31,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 19:05:31,065 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:05:31,065 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:05:31,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 19:05:31,066 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 19:05:31,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:05:31,066 INFO L85 PathProgramCache]: Analyzing trace with hash -517343278, now seen corresponding path program 1 times [2023-11-21 19:05:31,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:05:31,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868810839] [2023-11-21 19:05:31,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:05:31,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:05:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:05:31,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:05:31,145 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:05:31,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868810839] [2023-11-21 19:05:31,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868810839] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:05:31,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:05:31,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:05:31,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649918999] [2023-11-21 19:05:31,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:05:31,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:05:31,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:05:31,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:05:31,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:05:31,147 INFO L87 Difference]: Start difference. First operand 49416 states and 215250 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:05:32,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:05:32,344 INFO L93 Difference]: Finished difference Result 49367 states and 215117 transitions. [2023-11-21 19:05:32,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:05:32,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2023-11-21 19:05:32,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:05:32,849 INFO L225 Difference]: With dead ends: 49367 [2023-11-21 19:05:32,849 INFO L226 Difference]: Without dead ends: 49367 [2023-11-21 19:05:32,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:05:32,850 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 44 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:05:32,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 53 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:05:32,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49367 states. [2023-11-21 19:05:34,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49367 to 49367. [2023-11-21 19:05:34,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49367 states, 49357 states have (on average 4.358388881009786) internal successors, (215117), 49366 states have internal predecessors, (215117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:05:34,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49367 states to 49367 states and 215117 transitions. [2023-11-21 19:05:34,770 INFO L78 Accepts]: Start accepts. Automaton has 49367 states and 215117 transitions. Word has length 8 [2023-11-21 19:05:34,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:05:34,771 INFO L495 AbstractCegarLoop]: Abstraction has 49367 states and 215117 transitions. [2023-11-21 19:05:34,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:05:34,772 INFO L276 IsEmpty]: Start isEmpty. Operand 49367 states and 215117 transitions. [2023-11-21 19:05:34,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 19:05:34,773 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:05:34,773 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:05:34,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 19:05:34,773 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 19:05:34,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:05:34,774 INFO L85 PathProgramCache]: Analyzing trace with hash -517343277, now seen corresponding path program 1 times [2023-11-21 19:05:34,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:05:34,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601154706] [2023-11-21 19:05:34,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:05:34,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:05:34,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:05:34,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:05:34,881 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:05:34,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601154706] [2023-11-21 19:05:34,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601154706] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:05:34,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:05:34,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:05:34,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296772800] [2023-11-21 19:05:34,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:05:34,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:05:34,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:05:34,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:05:34,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:05:34,883 INFO L87 Difference]: Start difference. First operand 49367 states and 215117 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:05:36,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:05:36,217 INFO L93 Difference]: Finished difference Result 49318 states and 214984 transitions. [2023-11-21 19:05:36,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:05:36,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2023-11-21 19:05:36,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:05:36,575 INFO L225 Difference]: With dead ends: 49318 [2023-11-21 19:05:36,575 INFO L226 Difference]: Without dead ends: 49318 [2023-11-21 19:05:36,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:05:36,577 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 43 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:05:36,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 54 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:05:36,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49318 states. [2023-11-21 19:05:38,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49318 to 49318. [2023-11-21 19:05:38,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49318 states, 49309 states have (on average 4.359934291914255) internal successors, (214984), 49317 states have internal predecessors, (214984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:05:38,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49318 states to 49318 states and 214984 transitions. [2023-11-21 19:05:38,942 INFO L78 Accepts]: Start accepts. Automaton has 49318 states and 214984 transitions. Word has length 8 [2023-11-21 19:05:38,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:05:38,943 INFO L495 AbstractCegarLoop]: Abstraction has 49318 states and 214984 transitions. [2023-11-21 19:05:38,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:05:38,943 INFO L276 IsEmpty]: Start isEmpty. Operand 49318 states and 214984 transitions. [2023-11-21 19:05:38,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-21 19:05:38,945 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:05:38,945 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:05:38,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 19:05:38,946 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P2Err0ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 19:05:38,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:05:38,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1830499641, now seen corresponding path program 1 times [2023-11-21 19:05:38,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:05:38,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189677727] [2023-11-21 19:05:38,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:05:38,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:05:39,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:05:39,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:05:39,129 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:05:39,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189677727] [2023-11-21 19:05:39,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189677727] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:05:39,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:05:39,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 19:05:39,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113550053] [2023-11-21 19:05:39,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:05:39,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:05:39,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:05:39,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:05:39,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:05:39,132 INFO L87 Difference]: Start difference. First operand 49318 states and 214984 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:05:39,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:05:39,525 INFO L93 Difference]: Finished difference Result 42899 states and 186095 transitions. [2023-11-21 19:05:39,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:05:39,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2023-11-21 19:05:39,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:05:40,791 INFO L225 Difference]: With dead ends: 42899 [2023-11-21 19:05:40,791 INFO L226 Difference]: Without dead ends: 42017 [2023-11-21 19:05:40,791 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 [2023-11-21 19:05:40,794 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 34 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:05:40,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 54 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:05:40,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42017 states. [2023-11-21 19:05:41,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42017 to 42017. [2023-11-21 19:05:41,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42017 states, 42013 states have (on average 4.343322305000833) internal successors, (182476), 42016 states have internal predecessors, (182476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:05:42,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42017 states to 42017 states and 182476 transitions. [2023-11-21 19:05:42,772 INFO L78 Accepts]: Start accepts. Automaton has 42017 states and 182476 transitions. Word has length 11 [2023-11-21 19:05:42,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:05:42,773 INFO L495 AbstractCegarLoop]: Abstraction has 42017 states and 182476 transitions. [2023-11-21 19:05:42,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:05:42,773 INFO L276 IsEmpty]: Start isEmpty. Operand 42017 states and 182476 transitions. [2023-11-21 19:05:42,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-21 19:05:42,774 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:05:42,775 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:05:42,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 19:05:42,775 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 19:05:42,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:05:42,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1830501929, now seen corresponding path program 1 times [2023-11-21 19:05:42,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:05:42,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043679965] [2023-11-21 19:05:42,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:05:42,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:05:42,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:05:42,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:05:42,850 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:05:42,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043679965] [2023-11-21 19:05:42,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043679965] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:05:42,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:05:42,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:05:42,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433850595] [2023-11-21 19:05:42,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:05:42,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:05:42,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:05:42,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:05:42,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:05:42,854 INFO L87 Difference]: Start difference. First operand 42017 states and 182476 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:05:43,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:05:43,303 INFO L93 Difference]: Finished difference Result 41674 states and 181251 transitions. [2023-11-21 19:05:43,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:05:43,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2023-11-21 19:05:43,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:05:43,545 INFO L225 Difference]: With dead ends: 41674 [2023-11-21 19:05:43,545 INFO L226 Difference]: Without dead ends: 41674 [2023-11-21 19:05:43,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:05:43,547 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 39 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:05:43,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 56 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:05:43,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41674 states. [2023-11-21 19:05:45,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41674 to 41674. [2023-11-21 19:05:45,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41674 states, 41671 states have (on average 4.349571644548967) internal successors, (181251), 41673 states have internal predecessors, (181251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:05:45,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41674 states to 41674 states and 181251 transitions. [2023-11-21 19:05:45,738 INFO L78 Accepts]: Start accepts. Automaton has 41674 states and 181251 transitions. Word has length 11 [2023-11-21 19:05:45,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:05:45,738 INFO L495 AbstractCegarLoop]: Abstraction has 41674 states and 181251 transitions. [2023-11-21 19:05:45,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:05:45,738 INFO L276 IsEmpty]: Start isEmpty. Operand 41674 states and 181251 transitions. [2023-11-21 19:05:45,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-21 19:05:45,740 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:05:45,740 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:05:45,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 19:05:45,741 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 19:05:45,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:05:45,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1830501928, now seen corresponding path program 1 times [2023-11-21 19:05:45,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:05:45,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906104964] [2023-11-21 19:05:45,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:05:45,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:05:45,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:05:45,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:05:45,856 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:05:45,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906104964] [2023-11-21 19:05:45,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906104964] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:05:45,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:05:45,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:05:45,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093855402] [2023-11-21 19:05:45,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:05:45,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:05:45,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:05:45,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:05:45,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:05:45,859 INFO L87 Difference]: Start difference. First operand 41674 states and 181251 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:05:47,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:05:47,159 INFO L93 Difference]: Finished difference Result 41331 states and 180026 transitions. [2023-11-21 19:05:47,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:05:47,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2023-11-21 19:05:47,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:05:47,423 INFO L225 Difference]: With dead ends: 41331 [2023-11-21 19:05:47,423 INFO L226 Difference]: Without dead ends: 41331 [2023-11-21 19:05:47,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:05:47,424 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 38 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:05:47,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 57 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:05:47,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41331 states. [2023-11-21 19:05:48,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41331 to 41331. [2023-11-21 19:05:48,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41331 states, 41329 states have (on average 4.35592441143023) internal successors, (180026), 41330 states have internal predecessors, (180026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:05:49,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41331 states to 41331 states and 180026 transitions. [2023-11-21 19:05:49,466 INFO L78 Accepts]: Start accepts. Automaton has 41331 states and 180026 transitions. Word has length 11 [2023-11-21 19:05:49,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:05:49,466 INFO L495 AbstractCegarLoop]: Abstraction has 41331 states and 180026 transitions. [2023-11-21 19:05:49,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:05:49,467 INFO L276 IsEmpty]: Start isEmpty. Operand 41331 states and 180026 transitions. [2023-11-21 19:05:49,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-21 19:05:49,486 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:05:49,486 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, 1] [2023-11-21 19:05:49,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 19:05:49,487 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 19:05:49,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:05:49,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1506238765, now seen corresponding path program 1 times [2023-11-21 19:05:49,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:05:49,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405942465] [2023-11-21 19:05:49,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:05:49,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:05:49,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat