./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe030_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc 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_2be2d257-fa2b-4d74-af27-875f61e2c609/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be2d257-fa2b-4d74-af27-875f61e2c609/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_2be2d257-fa2b-4d74-af27-875f61e2c609/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be2d257-fa2b-4d74-af27-875f61e2c609/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe030_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be2d257-fa2b-4d74-af27-875f61e2c609/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_2be2d257-fa2b-4d74-af27-875f61e2c609/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 1730fa7f98e17ee8b58920ef3daf63ee88225f1b42924032a532b5f5db33fba5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 18:09:30,914 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 18:09:30,985 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be2d257-fa2b-4d74-af27-875f61e2c609/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-12-02 18:09:30,990 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 18:09:30,990 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 18:09:31,015 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 18:09:31,016 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 18:09:31,017 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 18:09:31,017 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 18:09:31,018 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 18:09:31,018 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 18:09:31,019 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 18:09:31,019 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 18:09:31,020 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 18:09:31,020 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 18:09:31,021 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 18:09:31,021 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 18:09:31,022 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 18:09:31,022 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 18:09:31,023 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 18:09:31,024 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 18:09:31,024 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 18:09:31,025 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 18:09:31,025 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 18:09:31,026 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 18:09:31,026 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 18:09:31,027 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 18:09:31,027 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 18:09:31,027 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 18:09:31,028 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 18:09:31,028 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 18:09:31,029 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 18:09:31,029 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 18:09:31,029 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 18:09:31,029 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 18:09:31,030 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 18:09:31,030 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 18:09:31,030 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 18:09:31,030 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 18:09:31,030 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 18:09:31,031 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:09:31,031 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 18:09:31,031 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 18:09:31,031 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 18:09:31,032 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 18:09:31,032 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 18:09:31,032 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 18:09:31,032 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 18:09:31,032 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_2be2d257-fa2b-4d74-af27-875f61e2c609/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be2d257-fa2b-4d74-af27-875f61e2c609/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1730fa7f98e17ee8b58920ef3daf63ee88225f1b42924032a532b5f5db33fba5 [2023-12-02 18:09:31,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 18:09:31,266 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 18:09:31,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 18:09:31,270 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 18:09:31,271 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 18:09:31,272 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be2d257-fa2b-4d74-af27-875f61e2c609/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/pthread-wmm/safe030_tso.i [2023-12-02 18:09:33,999 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 18:09:34,255 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 18:09:34,256 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be2d257-fa2b-4d74-af27-875f61e2c609/sv-benchmarks/c/pthread-wmm/safe030_tso.i [2023-12-02 18:09:34,272 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be2d257-fa2b-4d74-af27-875f61e2c609/bin/utaipan-verify-nQ1chXbOIh/data/d398d57b1/0cb17d131c11493bafff5ee7da638b24/FLAG4c147adc7 [2023-12-02 18:09:34,288 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be2d257-fa2b-4d74-af27-875f61e2c609/bin/utaipan-verify-nQ1chXbOIh/data/d398d57b1/0cb17d131c11493bafff5ee7da638b24 [2023-12-02 18:09:34,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 18:09:34,292 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 18:09:34,294 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 18:09:34,294 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 18:09:34,300 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 18:09:34,301 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:09:34" (1/1) ... [2023-12-02 18:09:34,302 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7beb26e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:09:34, skipping insertion in model container [2023-12-02 18:09:34,302 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:09:34" (1/1) ... [2023-12-02 18:09:34,357 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:09:34,710 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:09:34,721 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 18:09:34,767 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:09:34,803 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:09:34,803 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:09:34,811 INFO L206 MainTranslator]: Completed translation [2023-12-02 18:09:34,812 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:09:34 WrapperNode [2023-12-02 18:09:34,812 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 18:09:34,813 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 18:09:34,813 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 18:09:34,814 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 18:09:34,822 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:09:34" (1/1) ... [2023-12-02 18:09:34,836 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:09:34" (1/1) ... [2023-12-02 18:09:34,860 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 71 [2023-12-02 18:09:34,860 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 18:09:34,861 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 18:09:34,861 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 18:09:34,862 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 18:09:34,872 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:09:34" (1/1) ... [2023-12-02 18:09:34,872 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:09:34" (1/1) ... [2023-12-02 18:09:34,875 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:09:34" (1/1) ... [2023-12-02 18:09:34,875 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:09:34" (1/1) ... [2023-12-02 18:09:34,882 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:09:34" (1/1) ... [2023-12-02 18:09:34,884 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:09:34" (1/1) ... [2023-12-02 18:09:34,886 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:09:34" (1/1) ... [2023-12-02 18:09:34,888 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:09:34" (1/1) ... [2023-12-02 18:09:34,891 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 18:09:34,892 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 18:09:34,892 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 18:09:34,892 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 18:09:34,893 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:09:34" (1/1) ... [2023-12-02 18:09:34,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:09:34,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be2d257-fa2b-4d74-af27-875f61e2c609/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:09:34,927 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be2d257-fa2b-4d74-af27-875f61e2c609/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 18:09:34,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be2d257-fa2b-4d74-af27-875f61e2c609/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 18:09:34,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 18:09:34,965 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-02 18:09:34,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 18:09:34,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 18:09:34,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 18:09:34,966 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-12-02 18:09:34,966 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-12-02 18:09:34,966 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-12-02 18:09:34,966 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-12-02 18:09:34,966 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-12-02 18:09:34,967 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-12-02 18:09:34,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 18:09:34,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-02 18:09:34,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 18:09:34,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 18:09:34,969 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 18:09:35,102 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 18:09:35,104 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 18:09:35,277 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 18:09:35,365 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 18:09:35,365 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 18:09:35,366 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:09:35 BoogieIcfgContainer [2023-12-02 18:09:35,366 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 18:09:35,369 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 18:09:35,369 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 18:09:35,373 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 18:09:35,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:09:34" (1/3) ... [2023-12-02 18:09:35,374 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fef1b51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:09:35, skipping insertion in model container [2023-12-02 18:09:35,374 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:09:34" (2/3) ... [2023-12-02 18:09:35,374 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fef1b51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:09:35, skipping insertion in model container [2023-12-02 18:09:35,374 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:09:35" (3/3) ... [2023-12-02 18:09:35,375 INFO L112 eAbstractionObserver]: Analyzing ICFG safe030_tso.i [2023-12-02 18:09:35,390 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 18:09:35,390 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-12-02 18:09:35,390 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-02 18:09:35,429 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-02 18:09:35,453 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 60 places, 52 transitions, 116 flow [2023-12-02 18:09:35,746 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5087 states, 5079 states have (on average 3.5888954518606027) internal successors, (18228), 5086 states have internal predecessors, (18228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:09:35,766 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 18:09:35,773 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;@3bcdbb83, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 18:09:35,773 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-12-02 18:09:35,795 INFO L276 IsEmpty]: Start isEmpty. Operand has 5087 states, 5079 states have (on average 3.5888954518606027) internal successors, (18228), 5086 states have internal predecessors, (18228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:09:35,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-12-02 18:09:35,802 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:09:35,803 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-12-02 18:09:35,804 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-12-02 18:09:35,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:09:35,810 INFO L85 PathProgramCache]: Analyzing trace with hash 7240, now seen corresponding path program 1 times [2023-12-02 18:09:35,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:09:35,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555270661] [2023-12-02 18:09:35,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:09:35,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:09:35,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:09:36,049 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 18:09:36,050 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:09:36,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555270661] [2023-12-02 18:09:36,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555270661] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:09:36,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:09:36,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 18:09:36,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810084843] [2023-12-02 18:09:36,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:09:36,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:09:36,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:09:36,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:09:36,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:09:36,110 INFO L87 Difference]: Start difference. First operand has 5087 states, 5079 states have (on average 3.5888954518606027) internal successors, (18228), 5086 states have internal predecessors, (18228), 0 states have call successors, (0), 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 18:09:36,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:09:36,278 INFO L93 Difference]: Finished difference Result 4743 states and 16316 transitions. [2023-12-02 18:09:36,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:09:36,280 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 18:09:36,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:09:36,343 INFO L225 Difference]: With dead ends: 4743 [2023-12-02 18:09:36,343 INFO L226 Difference]: Without dead ends: 4743 [2023-12-02 18:09:36,344 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 18:09:36,347 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 39 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:09:36,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 39 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 18:09:36,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4743 states. [2023-12-02 18:09:36,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4743 to 4743. [2023-12-02 18:09:36,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4743 states, 4736 states have (on average 3.4451013513513513) internal successors, (16316), 4742 states have internal predecessors, (16316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:09:36,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4743 states to 4743 states and 16316 transitions. [2023-12-02 18:09:36,671 INFO L78 Accepts]: Start accepts. Automaton has 4743 states and 16316 transitions. Word has length 2 [2023-12-02 18:09:36,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:09:36,671 INFO L495 AbstractCegarLoop]: Abstraction has 4743 states and 16316 transitions. [2023-12-02 18:09:36,672 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 18:09:36,672 INFO L276 IsEmpty]: Start isEmpty. Operand 4743 states and 16316 transitions. [2023-12-02 18:09:36,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-12-02 18:09:36,672 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:09:36,673 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-12-02 18:09:36,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 18:09:36,673 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-12-02 18:09:36,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:09:36,674 INFO L85 PathProgramCache]: Analyzing trace with hash 7241, now seen corresponding path program 1 times [2023-12-02 18:09:36,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:09:36,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926748508] [2023-12-02 18:09:36,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:09:36,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:09:36,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:09:36,774 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 18:09:36,774 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:09:36,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926748508] [2023-12-02 18:09:36,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926748508] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:09:36,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:09:36,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 18:09:36,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18759922] [2023-12-02 18:09:36,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:09:36,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:09:36,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:09:36,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:09:36,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:09:36,779 INFO L87 Difference]: Start difference. First operand 4743 states and 16316 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 18:09:36,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:09:36,868 INFO L93 Difference]: Finished difference Result 4742 states and 16315 transitions. [2023-12-02 18:09:36,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:09:36,869 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 18:09:36,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:09:36,958 INFO L225 Difference]: With dead ends: 4742 [2023-12-02 18:09:36,958 INFO L226 Difference]: Without dead ends: 4742 [2023-12-02 18:09:36,959 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 18:09:36,960 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 38 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:09:36,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 40 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 18:09:36,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4742 states. [2023-12-02 18:09:37,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4742 to 4742. [2023-12-02 18:09:37,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4742 states, 4736 states have (on average 3.4448902027027026) internal successors, (16315), 4741 states have internal predecessors, (16315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:09:37,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4742 states to 4742 states and 16315 transitions. [2023-12-02 18:09:37,201 INFO L78 Accepts]: Start accepts. Automaton has 4742 states and 16315 transitions. Word has length 2 [2023-12-02 18:09:37,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:09:37,201 INFO L495 AbstractCegarLoop]: Abstraction has 4742 states and 16315 transitions. [2023-12-02 18:09:37,202 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 18:09:37,202 INFO L276 IsEmpty]: Start isEmpty. Operand 4742 states and 16315 transitions. [2023-12-02 18:09:37,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 18:09:37,203 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:09:37,203 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 18:09:37,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 18:09:37,203 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-12-02 18:09:37,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:09:37,204 INFO L85 PathProgramCache]: Analyzing trace with hash 215894358, now seen corresponding path program 1 times [2023-12-02 18:09:37,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:09:37,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482712114] [2023-12-02 18:09:37,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:09:37,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:09:37,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:09:37,265 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 18:09:37,266 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:09:37,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482712114] [2023-12-02 18:09:37,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482712114] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:09:37,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:09:37,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:09:37,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537015054] [2023-12-02 18:09:37,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:09:37,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:09:37,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:09:37,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:09:37,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:09:37,269 INFO L87 Difference]: Start difference. First operand 4742 states and 16315 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) [2023-12-02 18:09:37,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:09:37,398 INFO L93 Difference]: Finished difference Result 4735 states and 16302 transitions. [2023-12-02 18:09:37,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:09:37,399 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 [2023-12-02 18:09:37,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:09:37,455 INFO L225 Difference]: With dead ends: 4735 [2023-12-02 18:09:37,456 INFO L226 Difference]: Without dead ends: 4735 [2023-12-02 18:09:37,456 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 [2023-12-02 18:09:37,457 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 35 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:09:37,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 44 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 18:09:37,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4735 states. [2023-12-02 18:09:37,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4735 to 4735. [2023-12-02 18:09:37,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4735 states, 4730 states have (on average 3.4465116279069767) internal successors, (16302), 4734 states have internal predecessors, (16302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:09:37,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4735 states to 4735 states and 16302 transitions. [2023-12-02 18:09:37,720 INFO L78 Accepts]: Start accepts. Automaton has 4735 states and 16302 transitions. Word has length 5 [2023-12-02 18:09:37,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:09:37,720 INFO L495 AbstractCegarLoop]: Abstraction has 4735 states and 16302 transitions. [2023-12-02 18:09:37,720 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) [2023-12-02 18:09:37,721 INFO L276 IsEmpty]: Start isEmpty. Operand 4735 states and 16302 transitions. [2023-12-02 18:09:37,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 18:09:37,721 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:09:37,721 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 18:09:37,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 18:09:37,722 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-12-02 18:09:37,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:09:37,723 INFO L85 PathProgramCache]: Analyzing trace with hash 215894359, now seen corresponding path program 1 times [2023-12-02 18:09:37,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:09:37,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973221556] [2023-12-02 18:09:37,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:09:37,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:09:37,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:09:37,824 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 18:09:37,824 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:09:37,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973221556] [2023-12-02 18:09:37,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973221556] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:09:37,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:09:37,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:09:37,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522247598] [2023-12-02 18:09:37,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:09:37,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:09:37,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:09:37,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:09:37,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:09:37,827 INFO L87 Difference]: Start difference. First operand 4735 states and 16302 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) [2023-12-02 18:09:37,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:09:37,891 INFO L93 Difference]: Finished difference Result 4728 states and 16289 transitions. [2023-12-02 18:09:37,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:09:37,892 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 [2023-12-02 18:09:37,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:09:37,915 INFO L225 Difference]: With dead ends: 4728 [2023-12-02 18:09:37,916 INFO L226 Difference]: Without dead ends: 4728 [2023-12-02 18:09:37,916 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 [2023-12-02 18:09:37,917 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 34 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:09:37,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 45 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 18:09:37,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4728 states. [2023-12-02 18:09:38,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4728 to 4728. [2023-12-02 18:09:38,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4728 states, 4724 states have (on average 3.4481371718882303) internal successors, (16289), 4727 states have internal predecessors, (16289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:09:38,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4728 states to 4728 states and 16289 transitions. [2023-12-02 18:09:38,102 INFO L78 Accepts]: Start accepts. Automaton has 4728 states and 16289 transitions. Word has length 5 [2023-12-02 18:09:38,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:09:38,102 INFO L495 AbstractCegarLoop]: Abstraction has 4728 states and 16289 transitions. [2023-12-02 18:09:38,103 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) [2023-12-02 18:09:38,103 INFO L276 IsEmpty]: Start isEmpty. Operand 4728 states and 16289 transitions. [2023-12-02 18:09:38,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 18:09:38,103 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:09:38,103 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:09:38,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 18:09:38,104 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-12-02 18:09:38,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:09:38,104 INFO L85 PathProgramCache]: Analyzing trace with hash 2142982710, now seen corresponding path program 1 times [2023-12-02 18:09:38,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:09:38,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357100462] [2023-12-02 18:09:38,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:09:38,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:09:38,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:09:38,174 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 18:09:38,174 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:09:38,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357100462] [2023-12-02 18:09:38,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357100462] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:09:38,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:09:38,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:09:38,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649407891] [2023-12-02 18:09:38,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:09:38,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:09:38,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:09:38,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:09:38,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:09:38,177 INFO L87 Difference]: Start difference. First operand 4728 states and 16289 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) [2023-12-02 18:09:38,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:09:38,234 INFO L93 Difference]: Finished difference Result 4679 states and 16156 transitions. [2023-12-02 18:09:38,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:09:38,234 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 [2023-12-02 18:09:38,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:09:38,250 INFO L225 Difference]: With dead ends: 4679 [2023-12-02 18:09:38,250 INFO L226 Difference]: Without dead ends: 4679 [2023-12-02 18:09:38,250 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 [2023-12-02 18:09:38,252 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 31 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:09:38,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 50 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 18:09:38,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4679 states. [2023-12-02 18:09:38,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4679 to 4679. [2023-12-02 18:09:38,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4679 states, 4676 states have (on average 3.4550898203592815) internal successors, (16156), 4678 states have internal predecessors, (16156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:09:38,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4679 states to 4679 states and 16156 transitions. [2023-12-02 18:09:38,399 INFO L78 Accepts]: Start accepts. Automaton has 4679 states and 16156 transitions. Word has length 8 [2023-12-02 18:09:38,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:09:38,399 INFO L495 AbstractCegarLoop]: Abstraction has 4679 states and 16156 transitions. [2023-12-02 18:09:38,400 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) [2023-12-02 18:09:38,400 INFO L276 IsEmpty]: Start isEmpty. Operand 4679 states and 16156 transitions. [2023-12-02 18:09:38,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 18:09:38,400 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:09:38,401 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:09:38,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 18:09:38,401 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-12-02 18:09:38,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:09:38,401 INFO L85 PathProgramCache]: Analyzing trace with hash 2142982709, now seen corresponding path program 1 times [2023-12-02 18:09:38,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:09:38,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479047621] [2023-12-02 18:09:38,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:09:38,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:09:38,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:09:38,446 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 18:09:38,446 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:09:38,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479047621] [2023-12-02 18:09:38,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479047621] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:09:38,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:09:38,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:09:38,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919634387] [2023-12-02 18:09:38,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:09:38,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:09:38,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:09:38,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:09:38,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:09:38,449 INFO L87 Difference]: Start difference. First operand 4679 states and 16156 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) [2023-12-02 18:09:38,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:09:38,503 INFO L93 Difference]: Finished difference Result 4630 states and 16023 transitions. [2023-12-02 18:09:38,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:09:38,504 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 [2023-12-02 18:09:38,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:09:38,555 INFO L225 Difference]: With dead ends: 4630 [2023-12-02 18:09:38,555 INFO L226 Difference]: Without dead ends: 4630 [2023-12-02 18:09:38,555 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 [2023-12-02 18:09:38,556 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 30 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:09:38,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 49 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 18:09:38,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4630 states. [2023-12-02 18:09:38,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4630 to 4630. [2023-12-02 18:09:38,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4630 states, 4628 states have (on average 3.4621866897147795) internal successors, (16023), 4629 states have internal predecessors, (16023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:09:38,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4630 states to 4630 states and 16023 transitions. [2023-12-02 18:09:38,753 INFO L78 Accepts]: Start accepts. Automaton has 4630 states and 16023 transitions. Word has length 8 [2023-12-02 18:09:38,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:09:38,753 INFO L495 AbstractCegarLoop]: Abstraction has 4630 states and 16023 transitions. [2023-12-02 18:09:38,753 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) [2023-12-02 18:09:38,754 INFO L276 IsEmpty]: Start isEmpty. Operand 4630 states and 16023 transitions. [2023-12-02 18:09:38,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 18:09:38,761 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:09:38,762 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 18:09:38,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 18:09:38,762 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-12-02 18:09:38,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:09:38,763 INFO L85 PathProgramCache]: Analyzing trace with hash 597029128, now seen corresponding path program 1 times [2023-12-02 18:09:38,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:09:38,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030692461] [2023-12-02 18:09:38,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:09:38,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:09:38,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:09:39,020 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 18:09:39,021 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:09:39,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030692461] [2023-12-02 18:09:39,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030692461] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:09:39,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:09:39,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 18:09:39,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909804914] [2023-12-02 18:09:39,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:09:39,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 18:09:39,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:09:39,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 18:09:39,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:09:39,023 INFO L87 Difference]: Start difference. First operand 4630 states and 16023 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 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 18:09:39,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:09:39,270 INFO L93 Difference]: Finished difference Result 8249 states and 28481 transitions. [2023-12-02 18:09:39,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 18:09:39,271 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 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 18:09:39,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:09:39,308 INFO L225 Difference]: With dead ends: 8249 [2023-12-02 18:09:39,308 INFO L226 Difference]: Without dead ends: 8249 [2023-12-02 18:09:39,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-02 18:09:39,309 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 126 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:09:39,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 201 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:09:39,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8249 states. [2023-12-02 18:09:39,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8249 to 5840. [2023-12-02 18:09:39,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5840 states, 5838 states have (on average 3.484755053100377) internal successors, (20344), 5839 states have internal predecessors, (20344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:09:39,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5840 states to 5840 states and 20344 transitions. [2023-12-02 18:09:39,605 INFO L78 Accepts]: Start accepts. Automaton has 5840 states and 20344 transitions. Word has length 18 [2023-12-02 18:09:39,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:09:39,605 INFO L495 AbstractCegarLoop]: Abstraction has 5840 states and 20344 transitions. [2023-12-02 18:09:39,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 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 18:09:39,606 INFO L276 IsEmpty]: Start isEmpty. Operand 5840 states and 20344 transitions. [2023-12-02 18:09:39,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 18:09:39,610 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:09:39,610 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 18:09:39,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 18:09:39,611 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-12-02 18:09:39,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:09:39,611 INFO L85 PathProgramCache]: Analyzing trace with hash 597027779, now seen corresponding path program 1 times [2023-12-02 18:09:39,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:09:39,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413909213] [2023-12-02 18:09:39,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:09:39,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:09:39,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:09:39,936 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 18:09:39,936 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:09:39,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413909213] [2023-12-02 18:09:39,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413909213] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:09:39,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:09:39,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 18:09:39,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377777426] [2023-12-02 18:09:39,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:09:39,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 18:09:39,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:09:39,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 18:09:39,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-02 18:09:39,938 INFO L87 Difference]: Start difference. First operand 5840 states and 20344 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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 18:09:40,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:09:40,092 INFO L93 Difference]: Finished difference Result 5497 states and 19119 transitions. [2023-12-02 18:09:40,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:09:40,092 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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 18:09:40,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:09:40,107 INFO L225 Difference]: With dead ends: 5497 [2023-12-02 18:09:40,108 INFO L226 Difference]: Without dead ends: 3505 [2023-12-02 18:09:40,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-02 18:09:40,109 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 75 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:09:40,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 204 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:09:40,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3505 states. [2023-12-02 18:09:40,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3505 to 3505. [2023-12-02 18:09:40,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3505 states, 3504 states have (on average 3.295376712328767) internal successors, (11547), 3504 states have internal predecessors, (11547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:09:40,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3505 states to 3505 states and 11547 transitions. [2023-12-02 18:09:40,217 INFO L78 Accepts]: Start accepts. Automaton has 3505 states and 11547 transitions. Word has length 18 [2023-12-02 18:09:40,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:09:40,218 INFO L495 AbstractCegarLoop]: Abstraction has 3505 states and 11547 transitions. [2023-12-02 18:09:40,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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 18:09:40,218 INFO L276 IsEmpty]: Start isEmpty. Operand 3505 states and 11547 transitions. [2023-12-02 18:09:40,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 18:09:40,225 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:09:40,225 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 18:09:40,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 18:09:40,225 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-12-02 18:09:40,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:09:40,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1748678519, now seen corresponding path program 1 times [2023-12-02 18:09:40,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:09:40,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120719574] [2023-12-02 18:09:40,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:09:40,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:09:40,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:09:40,393 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 18:09:40,393 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:09:40,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120719574] [2023-12-02 18:09:40,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120719574] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:09:40,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:09:40,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 18:09:40,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637170398] [2023-12-02 18:09:40,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:09:40,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:09:40,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:09:40,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:09:40,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:09:40,396 INFO L87 Difference]: Start difference. First operand 3505 states and 11547 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 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 18:09:40,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:09:40,660 INFO L93 Difference]: Finished difference Result 4513 states and 14661 transitions. [2023-12-02 18:09:40,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 18:09:40,660 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 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 18:09:40,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:09:40,678 INFO L225 Difference]: With dead ends: 4513 [2023-12-02 18:09:40,678 INFO L226 Difference]: Without dead ends: 3715 [2023-12-02 18:09:40,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-12-02 18:09:40,679 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 122 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:09:40,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 214 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:09:40,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3715 states. [2023-12-02 18:09:40,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3715 to 3203. [2023-12-02 18:09:40,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3203 states, 3202 states have (on average 3.264834478450968) internal successors, (10454), 3202 states have internal predecessors, (10454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:09:40,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3203 states to 3203 states and 10454 transitions. [2023-12-02 18:09:40,811 INFO L78 Accepts]: Start accepts. Automaton has 3203 states and 10454 transitions. Word has length 20 [2023-12-02 18:09:40,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:09:40,812 INFO L495 AbstractCegarLoop]: Abstraction has 3203 states and 10454 transitions. [2023-12-02 18:09:40,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 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 18:09:40,812 INFO L276 IsEmpty]: Start isEmpty. Operand 3203 states and 10454 transitions. [2023-12-02 18:09:40,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 18:09:40,819 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:09:40,819 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 18:09:40,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 18:09:40,820 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-12-02 18:09:40,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:09:40,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1377599607, now seen corresponding path program 1 times [2023-12-02 18:09:40,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:09:40,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305518368] [2023-12-02 18:09:40,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:09:40,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:09:40,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:09:40,997 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 18:09:40,998 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:09:40,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305518368] [2023-12-02 18:09:40,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305518368] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:09:40,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:09:40,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 18:09:40,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625004056] [2023-12-02 18:09:40,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:09:40,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:09:40,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:09:41,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:09:41,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:09:41,000 INFO L87 Difference]: Start difference. First operand 3203 states and 10454 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 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 18:09:41,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:09:41,229 INFO L93 Difference]: Finished difference Result 4095 states and 13229 transitions. [2023-12-02 18:09:41,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 18:09:41,229 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 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 18:09:41,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:09:41,244 INFO L225 Difference]: With dead ends: 4095 [2023-12-02 18:09:41,244 INFO L226 Difference]: Without dead ends: 3485 [2023-12-02 18:09:41,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-12-02 18:09:41,245 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 118 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:09:41,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 203 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:09:41,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3485 states. [2023-12-02 18:09:41,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3485 to 3013. [2023-12-02 18:09:41,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3013 states, 3012 states have (on average 3.239707835325365) internal successors, (9758), 3012 states have internal predecessors, (9758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:09:41,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3013 states to 3013 states and 9758 transitions. [2023-12-02 18:09:41,361 INFO L78 Accepts]: Start accepts. Automaton has 3013 states and 9758 transitions. Word has length 20 [2023-12-02 18:09:41,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:09:41,362 INFO L495 AbstractCegarLoop]: Abstraction has 3013 states and 9758 transitions. [2023-12-02 18:09:41,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 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 18:09:41,362 INFO L276 IsEmpty]: Start isEmpty. Operand 3013 states and 9758 transitions. [2023-12-02 18:09:41,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-02 18:09:41,370 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:09:41,370 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, 1] [2023-12-02 18:09:41,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 18:09:41,371 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-12-02 18:09:41,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:09:41,372 INFO L85 PathProgramCache]: Analyzing trace with hash -744817974, now seen corresponding path program 1 times [2023-12-02 18:09:41,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:09:41,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391316551] [2023-12-02 18:09:41,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:09:41,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:09:41,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:09:41,551 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 18:09:41,551 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:09:41,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391316551] [2023-12-02 18:09:41,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391316551] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:09:41,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:09:41,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 18:09:41,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951890374] [2023-12-02 18:09:41,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:09:41,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:09:41,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:09:41,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:09:41,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:09:41,554 INFO L87 Difference]: Start difference. First operand 3013 states and 9758 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:09:41,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:09:41,774 INFO L93 Difference]: Finished difference Result 3753 states and 12083 transitions. [2023-12-02 18:09:41,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 18:09:41,775 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2023-12-02 18:09:41,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:09:41,788 INFO L225 Difference]: With dead ends: 3753 [2023-12-02 18:09:41,788 INFO L226 Difference]: Without dead ends: 3355 [2023-12-02 18:09:41,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-12-02 18:09:41,789 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 94 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:09:41,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 183 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:09:41,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3355 states. [2023-12-02 18:09:41,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3355 to 2923. [2023-12-02 18:09:41,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2923 states, 2922 states have (on average 3.2258726899383983) internal successors, (9426), 2922 states have internal predecessors, (9426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:09:41,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2923 states to 2923 states and 9426 transitions. [2023-12-02 18:09:41,875 INFO L78 Accepts]: Start accepts. Automaton has 2923 states and 9426 transitions. Word has length 22 [2023-12-02 18:09:41,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:09:41,876 INFO L495 AbstractCegarLoop]: Abstraction has 2923 states and 9426 transitions. [2023-12-02 18:09:41,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:09:41,876 INFO L276 IsEmpty]: Start isEmpty. Operand 2923 states and 9426 transitions. [2023-12-02 18:09:41,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-02 18:09:41,882 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:09:41,882 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, 1, 1] [2023-12-02 18:09:41,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-02 18:09:41,883 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-12-02 18:09:41,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:09:41,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1276612884, now seen corresponding path program 1 times [2023-12-02 18:09:41,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:09:41,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915301355] [2023-12-02 18:09:41,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:09:41,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:09:41,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:09:42,032 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 18:09:42,033 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:09:42,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915301355] [2023-12-02 18:09:42,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915301355] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:09:42,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:09:42,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 18:09:42,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086070465] [2023-12-02 18:09:42,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:09:42,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:09:42,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:09:42,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:09:42,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:09:42,035 INFO L87 Difference]: Start difference. First operand 2923 states and 9426 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:09:42,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:09:42,237 INFO L93 Difference]: Finished difference Result 4455 states and 14087 transitions. [2023-12-02 18:09:42,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 18:09:42,238 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-12-02 18:09:42,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:09:42,251 INFO L225 Difference]: With dead ends: 4455 [2023-12-02 18:09:42,252 INFO L226 Difference]: Without dead ends: 3583 [2023-12-02 18:09:42,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-12-02 18:09:42,253 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 97 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:09:42,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 229 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:09:42,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3583 states. [2023-12-02 18:09:42,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3583 to 2683. [2023-12-02 18:09:42,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2683 states, 2682 states have (on average 3.1651752423564505) internal successors, (8489), 2682 states have internal predecessors, (8489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:09:42,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2683 states to 2683 states and 8489 transitions. [2023-12-02 18:09:42,332 INFO L78 Accepts]: Start accepts. Automaton has 2683 states and 8489 transitions. Word has length 23 [2023-12-02 18:09:42,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:09:42,333 INFO L495 AbstractCegarLoop]: Abstraction has 2683 states and 8489 transitions. [2023-12-02 18:09:42,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:09:42,333 INFO L276 IsEmpty]: Start isEmpty. Operand 2683 states and 8489 transitions. [2023-12-02 18:09:42,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-02 18:09:42,338 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:09:42,339 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, 1, 1] [2023-12-02 18:09:42,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-02 18:09:42,339 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-12-02 18:09:42,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:09:42,340 INFO L85 PathProgramCache]: Analyzing trace with hash -563358436, now seen corresponding path program 1 times [2023-12-02 18:09:42,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:09:42,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333114806] [2023-12-02 18:09:42,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:09:42,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:09:42,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:09:42,489 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 18:09:42,489 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:09:42,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333114806] [2023-12-02 18:09:42,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333114806] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:09:42,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:09:42,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 18:09:42,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194977938] [2023-12-02 18:09:42,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:09:42,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:09:42,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:09:42,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:09:42,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:09:42,491 INFO L87 Difference]: Start difference. First operand 2683 states and 8489 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:09:42,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:09:42,684 INFO L93 Difference]: Finished difference Result 4155 states and 12997 transitions. [2023-12-02 18:09:42,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 18:09:42,685 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-12-02 18:09:42,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:09:42,694 INFO L225 Difference]: With dead ends: 4155 [2023-12-02 18:09:42,694 INFO L226 Difference]: Without dead ends: 3343 [2023-12-02 18:09:42,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-12-02 18:09:42,695 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 106 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:09:42,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 220 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:09:42,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2023-12-02 18:09:42,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 2431. [2023-12-02 18:09:42,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2431 states, 2430 states have (on average 3.1267489711934155) internal successors, (7598), 2430 states have internal predecessors, (7598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:09:42,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 7598 transitions. [2023-12-02 18:09:42,781 INFO L78 Accepts]: Start accepts. Automaton has 2431 states and 7598 transitions. Word has length 23 [2023-12-02 18:09:42,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:09:42,781 INFO L495 AbstractCegarLoop]: Abstraction has 2431 states and 7598 transitions. [2023-12-02 18:09:42,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:09:42,782 INFO L276 IsEmpty]: Start isEmpty. Operand 2431 states and 7598 transitions. [2023-12-02 18:09:42,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-02 18:09:42,788 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:09:42,789 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, 1, 1] [2023-12-02 18:09:42,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-02 18:09:42,789 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-12-02 18:09:42,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:09:42,790 INFO L85 PathProgramCache]: Analyzing trace with hash -40558160, now seen corresponding path program 1 times [2023-12-02 18:09:42,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:09:42,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081644865] [2023-12-02 18:09:42,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:09:42,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:09:42,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:09:42,959 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 18:09:42,959 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:09:42,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081644865] [2023-12-02 18:09:42,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081644865] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:09:42,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:09:42,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 18:09:42,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389231356] [2023-12-02 18:09:42,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:09:42,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:09:42,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:09:42,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:09:42,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:09:42,962 INFO L87 Difference]: Start difference. First operand 2431 states and 7598 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:09:43,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:09:43,177 INFO L93 Difference]: Finished difference Result 3915 states and 12087 transitions. [2023-12-02 18:09:43,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 18:09:43,178 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-12-02 18:09:43,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:09:43,189 INFO L225 Difference]: With dead ends: 3915 [2023-12-02 18:09:43,190 INFO L226 Difference]: Without dead ends: 3103 [2023-12-02 18:09:43,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-12-02 18:09:43,191 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 105 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:09:43,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 208 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:09:43,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3103 states. [2023-12-02 18:09:43,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3103 to 2191. [2023-12-02 18:09:43,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2191 states, 2190 states have (on average 3.0904109589041098) internal successors, (6768), 2190 states have internal predecessors, (6768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:09:43,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2191 states to 2191 states and 6768 transitions. [2023-12-02 18:09:43,277 INFO L78 Accepts]: Start accepts. Automaton has 2191 states and 6768 transitions. Word has length 23 [2023-12-02 18:09:43,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:09:43,277 INFO L495 AbstractCegarLoop]: Abstraction has 2191 states and 6768 transitions. [2023-12-02 18:09:43,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:09:43,278 INFO L276 IsEmpty]: Start isEmpty. Operand 2191 states and 6768 transitions. [2023-12-02 18:09:43,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-02 18:09:43,284 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:09:43,284 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, 1, 1, 1] [2023-12-02 18:09:43,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-02 18:09:43,285 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-12-02 18:09:43,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:09:43,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1905000821, now seen corresponding path program 1 times [2023-12-02 18:09:43,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:09:43,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335546723] [2023-12-02 18:09:43,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:09:43,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:09:43,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:09:43,422 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 18:09:43,422 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:09:43,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335546723] [2023-12-02 18:09:43,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335546723] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:09:43,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:09:43,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:09:43,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432422704] [2023-12-02 18:09:43,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:09:43,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:09:43,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:09:43,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:09:43,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:09:43,424 INFO L87 Difference]: Start difference. First operand 2191 states and 6768 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:09:43,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:09:43,485 INFO L93 Difference]: Finished difference Result 1984 states and 5717 transitions. [2023-12-02 18:09:43,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:09:43,486 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 18:09:43,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:09:43,492 INFO L225 Difference]: With dead ends: 1984 [2023-12-02 18:09:43,493 INFO L226 Difference]: Without dead ends: 1703 [2023-12-02 18:09:43,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:09:43,494 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 56 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:09:43,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 56 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 18:09:43,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2023-12-02 18:09:43,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1703. [2023-12-02 18:09:43,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1703 states, 1702 states have (on average 2.9142185663924796) internal successors, (4960), 1702 states have internal predecessors, (4960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:09:43,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1703 states to 1703 states and 4960 transitions. [2023-12-02 18:09:43,549 INFO L78 Accepts]: Start accepts. Automaton has 1703 states and 4960 transitions. Word has length 24 [2023-12-02 18:09:43,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:09:43,549 INFO L495 AbstractCegarLoop]: Abstraction has 1703 states and 4960 transitions. [2023-12-02 18:09:43,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:09:43,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1703 states and 4960 transitions. [2023-12-02 18:09:43,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-02 18:09:43,554 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:09:43,555 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, 1, 1, 1, 1, 1, 1] [2023-12-02 18:09:43,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-02 18:09:43,555 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-12-02 18:09:43,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:09:43,556 INFO L85 PathProgramCache]: Analyzing trace with hash 751548534, now seen corresponding path program 1 times [2023-12-02 18:09:43,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:09:43,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465761799] [2023-12-02 18:09:43,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:09:43,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:09:43,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:09:43,681 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 18:09:43,681 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:09:43,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465761799] [2023-12-02 18:09:43,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465761799] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:09:43,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:09:43,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 18:09:43,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812533910] [2023-12-02 18:09:43,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:09:43,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 18:09:43,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:09:43,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 18:09:43,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:09:43,683 INFO L87 Difference]: Start difference. First operand 1703 states and 4960 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 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 18:09:43,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:09:43,756 INFO L93 Difference]: Finished difference Result 1217 states and 3313 transitions. [2023-12-02 18:09:43,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 18:09:43,756 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 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 27 [2023-12-02 18:09:43,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:09:43,759 INFO L225 Difference]: With dead ends: 1217 [2023-12-02 18:09:43,759 INFO L226 Difference]: Without dead ends: 956 [2023-12-02 18:09:43,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:09:43,760 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 89 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:09:43,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 73 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:09:43,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2023-12-02 18:09:43,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 956. [2023-12-02 18:09:43,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 955 states have (on average 2.6774869109947645) internal successors, (2557), 955 states have internal predecessors, (2557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:09:43,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 2557 transitions. [2023-12-02 18:09:43,781 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 2557 transitions. Word has length 27 [2023-12-02 18:09:43,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:09:43,782 INFO L495 AbstractCegarLoop]: Abstraction has 956 states and 2557 transitions. [2023-12-02 18:09:43,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 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 18:09:43,782 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 2557 transitions. [2023-12-02 18:09:43,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-02 18:09:43,784 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:09:43,785 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:09:43,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-02 18:09:43,785 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-12-02 18:09:43,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:09:43,786 INFO L85 PathProgramCache]: Analyzing trace with hash -572456755, now seen corresponding path program 1 times [2023-12-02 18:09:43,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:09:43,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563917748] [2023-12-02 18:09:43,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:09:43,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:09:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:09:43,938 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 18:09:43,939 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:09:43,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563917748] [2023-12-02 18:09:43,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563917748] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:09:43,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:09:43,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 18:09:43,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445777219] [2023-12-02 18:09:43,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:09:43,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:09:43,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:09:43,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:09:43,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:09:43,941 INFO L87 Difference]: Start difference. First operand 956 states and 2557 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:09:44,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:09:44,006 INFO L93 Difference]: Finished difference Result 664 states and 1757 transitions. [2023-12-02 18:09:44,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 18:09:44,007 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2023-12-02 18:09:44,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:09:44,007 INFO L225 Difference]: With dead ends: 664 [2023-12-02 18:09:44,007 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 18:09:44,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-12-02 18:09:44,008 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 102 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:09:44,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 36 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 18:09:44,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 18:09:44,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 18:09:44,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:09:44,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 18:09:44,010 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2023-12-02 18:09:44,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:09:44,010 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 18:09:44,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:09:44,010 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 18:09:44,011 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 18:09:44,013 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2023-12-02 18:09:44,013 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2023-12-02 18:09:44,014 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2023-12-02 18:09:44,014 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2023-12-02 18:09:44,014 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2023-12-02 18:09:44,014 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2023-12-02 18:09:44,014 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2023-12-02 18:09:44,014 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2023-12-02 18:09:44,015 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 11 remaining) [2023-12-02 18:09:44,015 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2023-12-02 18:09:44,015 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2023-12-02 18:09:44,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-02 18:09:44,018 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:09:44,021 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-02 18:09:44,021 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 18:09:44,024 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 06:09:44 BasicIcfg [2023-12-02 18:09:44,024 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 18:09:44,025 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 18:09:44,025 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 18:09:44,025 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 18:09:44,025 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:09:35" (3/4) ... [2023-12-02 18:09:44,027 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 18:09:44,030 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-12-02 18:09:44,031 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-12-02 18:09:44,031 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-12-02 18:09:44,035 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 33 nodes and edges [2023-12-02 18:09:44,035 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-12-02 18:09:44,035 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-12-02 18:09:44,036 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-12-02 18:09:44,117 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be2d257-fa2b-4d74-af27-875f61e2c609/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 18:09:44,117 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be2d257-fa2b-4d74-af27-875f61e2c609/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 18:09:44,117 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 18:09:44,118 INFO L158 Benchmark]: Toolchain (without parser) took 9826.15ms. Allocated memory was 159.4MB in the beginning and 864.0MB in the end (delta: 704.6MB). Free memory was 118.5MB in the beginning and 637.1MB in the end (delta: -518.6MB). Peak memory consumption was 187.9MB. Max. memory is 16.1GB. [2023-12-02 18:09:44,119 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 104.9MB. Free memory is still 54.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 18:09:44,119 INFO L158 Benchmark]: CACSL2BoogieTranslator took 518.87ms. Allocated memory is still 159.4MB. Free memory was 118.3MB in the beginning and 97.6MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 18:09:44,120 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.30ms. Allocated memory is still 159.4MB. Free memory was 97.6MB in the beginning and 95.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 18:09:44,120 INFO L158 Benchmark]: Boogie Preprocessor took 30.02ms. Allocated memory is still 159.4MB. Free memory was 95.6MB in the beginning and 94.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 18:09:44,121 INFO L158 Benchmark]: RCFGBuilder took 474.26ms. Allocated memory is still 159.4MB. Free memory was 94.1MB in the beginning and 72.2MB in the end (delta: 21.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 18:09:44,121 INFO L158 Benchmark]: TraceAbstraction took 8655.14ms. Allocated memory was 159.4MB in the beginning and 864.0MB in the end (delta: 704.6MB). Free memory was 71.6MB in the beginning and 641.3MB in the end (delta: -569.7MB). Peak memory consumption was 135.5MB. Max. memory is 16.1GB. [2023-12-02 18:09:44,121 INFO L158 Benchmark]: Witness Printer took 92.86ms. Allocated memory is still 864.0MB. Free memory was 641.3MB in the beginning and 637.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 18:09:44,124 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 104.9MB. Free memory is still 54.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 518.87ms. Allocated memory is still 159.4MB. Free memory was 118.3MB in the beginning and 97.6MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.30ms. Allocated memory is still 159.4MB. Free memory was 97.6MB in the beginning and 95.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.02ms. Allocated memory is still 159.4MB. Free memory was 95.6MB in the beginning and 94.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 474.26ms. Allocated memory is still 159.4MB. Free memory was 94.1MB in the beginning and 72.2MB in the end (delta: 21.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 8655.14ms. Allocated memory was 159.4MB in the beginning and 864.0MB in the end (delta: 704.6MB). Free memory was 71.6MB in the beginning and 641.3MB in the end (delta: -569.7MB). Peak memory consumption was 135.5MB. Max. memory is 16.1GB. * Witness Printer took 92.86ms. Allocated memory is still 864.0MB. Free memory was 641.3MB in the beginning and 637.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * 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 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 772]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 17]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 75 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 8.6s, OverallIterations: 17, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1297 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1297 mSDsluCounter, 2094 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1405 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1176 IncrementalHoareTripleChecker+Invalid, 1219 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 689 mSDtfsCounter, 1176 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5840occurred in iteration=7, InterpolantAutomatonStates: 107, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.4s AutomataMinimizationTime, 17 MinimizatonAttempts, 6549 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 278 NumberOfCodeBlocks, 278 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 261 ConstructedInterpolants, 0 QuantifiedInterpolants, 1504 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 17 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-02 18:09:44,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be2d257-fa2b-4d74-af27-875f61e2c609/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE