./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 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_30f798aa-02d5-4cb6-9741-91442a799076/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f798aa-02d5-4cb6-9741-91442a799076/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f798aa-02d5-4cb6-9741-91442a799076/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f798aa-02d5-4cb6-9741-91442a799076/bin/uautomizer-verify-jihMAELWvX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f798aa-02d5-4cb6-9741-91442a799076/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f798aa-02d5-4cb6-9741-91442a799076/bin/uautomizer-verify-jihMAELWvX --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:09:21,520 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:09:21,622 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f798aa-02d5-4cb6-9741-91442a799076/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-08 17:09:21,628 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:09:21,629 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:09:21,654 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:09:21,655 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:09:21,656 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:09:21,657 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:09:21,658 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:09:21,658 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:09:21,658 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:09:21,659 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:09:21,660 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:09:21,660 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:09:21,663 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:09:21,665 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:09:21,667 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:09:21,667 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:09:21,668 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:09:21,668 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-08 17:09:21,673 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-08 17:09:21,674 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-08 17:09:21,674 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:09:21,674 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 17:09:21,674 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:09:21,674 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 17:09:21,675 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:09:21,675 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:09:21,675 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:09:21,675 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:09:21,676 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:09:21,676 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:09:21,676 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:09:21,677 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:09:21,677 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:09:21,677 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:09:21,677 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:09:21,677 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:09:21,678 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:09:21,678 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:09:21,678 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:09:21,678 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_30f798aa-02d5-4cb6-9741-91442a799076/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f798aa-02d5-4cb6-9741-91442a799076/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 [2024-11-08 17:09:22,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:09:22,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:09:22,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:09:22,043 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:09:22,044 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:09:22,045 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f798aa-02d5-4cb6-9741-91442a799076/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c Unable to find full path for "g++" [2024-11-08 17:09:24,062 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:09:24,279 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:09:24,280 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f798aa-02d5-4cb6-9741-91442a799076/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2024-11-08 17:09:24,291 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f798aa-02d5-4cb6-9741-91442a799076/bin/uautomizer-verify-jihMAELWvX/data/21227770f/27ed84411c4940899d97461c383b1ad8/FLAG577575876 [2024-11-08 17:09:24,631 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f798aa-02d5-4cb6-9741-91442a799076/bin/uautomizer-verify-jihMAELWvX/data/21227770f/27ed84411c4940899d97461c383b1ad8 [2024-11-08 17:09:24,634 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:09:24,635 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:09:24,637 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:09:24,637 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:09:24,645 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:09:24,646 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:09:24" (1/1) ... [2024-11-08 17:09:24,647 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74d81fa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:24, skipping insertion in model container [2024-11-08 17:09:24,647 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:09:24" (1/1) ... [2024-11-08 17:09:24,682 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:09:24,937 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:09:24,940 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:09:24,956 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:09:25,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:09:25,039 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:09:25,039 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:25 WrapperNode [2024-11-08 17:09:25,040 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:09:25,041 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:09:25,041 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:09:25,041 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:09:25,049 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:25" (1/1) ... [2024-11-08 17:09:25,059 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:25" (1/1) ... [2024-11-08 17:09:25,108 INFO L138 Inliner]: procedures = 25, calls = 74, calls flagged for inlining = 28, calls inlined = 34, statements flattened = 455 [2024-11-08 17:09:25,109 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:09:25,110 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:09:25,110 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:09:25,110 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:09:25,127 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:25" (1/1) ... [2024-11-08 17:09:25,128 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:25" (1/1) ... [2024-11-08 17:09:25,141 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:25" (1/1) ... [2024-11-08 17:09:25,168 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-11-08 17:09:25,168 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:25" (1/1) ... [2024-11-08 17:09:25,168 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:25" (1/1) ... [2024-11-08 17:09:25,190 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:25" (1/1) ... [2024-11-08 17:09:25,203 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:25" (1/1) ... [2024-11-08 17:09:25,210 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:25" (1/1) ... [2024-11-08 17:09:25,212 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:25" (1/1) ... [2024-11-08 17:09:25,224 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:09:25,225 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:09:25,225 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:09:25,225 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:09:25,226 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:25" (1/1) ... [2024-11-08 17:09:25,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:09:25,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f798aa-02d5-4cb6-9741-91442a799076/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:09:25,269 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f798aa-02d5-4cb6-9741-91442a799076/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:09:25,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f798aa-02d5-4cb6-9741-91442a799076/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:09:25,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:09:25,314 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 17:09:25,314 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 17:09:25,315 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 17:09:25,316 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 17:09:25,316 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-08 17:09:25,316 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-08 17:09:25,316 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-08 17:09:25,316 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-08 17:09:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 17:09:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 17:09:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 17:09:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 17:09:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 17:09:25,318 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 17:09:25,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 17:09:25,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:09:25,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:09:25,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 17:09:25,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 17:09:25,323 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 17:09:25,504 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:09:25,506 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:09:26,482 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 17:09:26,482 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:09:27,152 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:09:27,153 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-08 17:09:27,154 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:09:27 BoogieIcfgContainer [2024-11-08 17:09:27,154 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:09:27,157 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:09:27,157 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:09:27,163 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:09:27,163 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:09:24" (1/3) ... [2024-11-08 17:09:27,164 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@766476e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:09:27, skipping insertion in model container [2024-11-08 17:09:27,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:25" (2/3) ... [2024-11-08 17:09:27,166 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@766476e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:09:27, skipping insertion in model container [2024-11-08 17:09:27,166 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:09:27" (3/3) ... [2024-11-08 17:09:27,168 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-2.wvr-bad.c [2024-11-08 17:09:27,190 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:09:27,190 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2024-11-08 17:09:27,190 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 17:09:27,328 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-08 17:09:27,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 134 transitions, 296 flow [2024-11-08 17:09:27,461 INFO L124 PetriNetUnfolderBase]: 28/130 cut-off events. [2024-11-08 17:09:27,461 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-08 17:09:27,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 130 events. 28/130 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 392 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 110. Up to 8 conditions per place. [2024-11-08 17:09:27,469 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 134 transitions, 296 flow [2024-11-08 17:09:27,480 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 129 transitions, 282 flow [2024-11-08 17:09:27,496 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:09:27,505 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@3e82a75c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:09:27,506 INFO L334 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2024-11-08 17:09:27,513 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 17:09:27,513 INFO L124 PetriNetUnfolderBase]: 3/10 cut-off events. [2024-11-08 17:09:27,513 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 17:09:27,514 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:09:27,514 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-08 17:09:27,515 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2024-11-08 17:09:27,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:09:27,521 INFO L85 PathProgramCache]: Analyzing trace with hash 42425075, now seen corresponding path program 1 times [2024-11-08 17:09:27,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:09:27,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310844942] [2024-11-08 17:09:27,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:09:27,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:09:27,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:09:27,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:09:27,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:09:27,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310844942] [2024-11-08 17:09:27,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310844942] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:09:27,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:09:27,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 17:09:27,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317101457] [2024-11-08 17:09:27,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:09:27,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:09:27,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:09:27,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:09:27,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:09:28,026 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 134 [2024-11-08 17:09:28,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 129 transitions, 282 flow. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:09:28,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:09:28,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 134 [2024-11-08 17:09:28,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:09:45,909 INFO L124 PetriNetUnfolderBase]: 118663/157211 cut-off events. [2024-11-08 17:09:45,910 INFO L125 PetriNetUnfolderBase]: For 3384/3384 co-relation queries the response was YES. [2024-11-08 17:09:46,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305235 conditions, 157211 events. 118663/157211 cut-off events. For 3384/3384 co-relation queries the response was YES. Maximal size of possible extension queue 12337. Compared 1179867 event pairs, 87208 based on Foata normal form. 1/82038 useless extension candidates. Maximal degree in co-relation 297480. Up to 144091 conditions per place. [2024-11-08 17:09:47,207 INFO L140 encePairwiseOnDemand]: 123/134 looper letters, 76 selfloop transitions, 2 changer transitions 0/119 dead transitions. [2024-11-08 17:09:47,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 119 transitions, 418 flow [2024-11-08 17:09:47,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:09:47,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:09:47,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 225 transitions. [2024-11-08 17:09:47,222 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5597014925373134 [2024-11-08 17:09:47,224 INFO L175 Difference]: Start difference. First operand has 114 places, 129 transitions, 282 flow. Second operand 3 states and 225 transitions. [2024-11-08 17:09:47,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 119 transitions, 418 flow [2024-11-08 17:09:47,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 119 transitions, 402 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-08 17:09:47,709 INFO L231 Difference]: Finished difference. Result has 102 places, 119 transitions, 250 flow [2024-11-08 17:09:47,712 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=102, PETRI_TRANSITIONS=119} [2024-11-08 17:09:47,717 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, -12 predicate places. [2024-11-08 17:09:47,717 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 119 transitions, 250 flow [2024-11-08 17:09:47,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:09:47,718 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:09:47,718 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-08 17:09:47,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:09:47,719 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2024-11-08 17:09:47,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:09:47,720 INFO L85 PathProgramCache]: Analyzing trace with hash 42425076, now seen corresponding path program 1 times [2024-11-08 17:09:47,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:09:47,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644620594] [2024-11-08 17:09:47,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:09:47,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:09:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:09:48,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:09:48,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:09:48,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644620594] [2024-11-08 17:09:48,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644620594] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:09:48,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:09:48,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:09:48,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446478474] [2024-11-08 17:09:48,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:09:48,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:09:48,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:09:48,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:09:48,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:09:48,266 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 134 [2024-11-08 17:09:48,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 119 transitions, 250 flow. Second operand has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:09:48,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:09:48,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 134 [2024-11-08 17:09:48,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:10:01,561 INFO L124 PetriNetUnfolderBase]: 118671/157239 cut-off events. [2024-11-08 17:10:01,561 INFO L125 PetriNetUnfolderBase]: For 585/585 co-relation queries the response was YES. [2024-11-08 17:10:01,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302940 conditions, 157239 events. 118671/157239 cut-off events. For 585/585 co-relation queries the response was YES. Maximal size of possible extension queue 12337. Compared 1180687 event pairs, 87208 based on Foata normal form. 0/82049 useless extension candidates. Maximal degree in co-relation 302819. Up to 144121 conditions per place. [2024-11-08 17:10:02,772 INFO L140 encePairwiseOnDemand]: 117/134 looper letters, 105 selfloop transitions, 17 changer transitions 0/147 dead transitions. [2024-11-08 17:10:02,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 147 transitions, 554 flow [2024-11-08 17:10:02,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:10:02,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:10:02,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 262 transitions. [2024-11-08 17:10:02,775 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48880597014925375 [2024-11-08 17:10:02,775 INFO L175 Difference]: Start difference. First operand has 102 places, 119 transitions, 250 flow. Second operand 4 states and 262 transitions. [2024-11-08 17:10:02,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 147 transitions, 554 flow [2024-11-08 17:10:02,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 147 transitions, 546 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 17:10:02,781 INFO L231 Difference]: Finished difference. Result has 105 places, 135 transitions, 368 flow [2024-11-08 17:10:02,782 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=368, PETRI_PLACES=105, PETRI_TRANSITIONS=135} [2024-11-08 17:10:02,783 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, -9 predicate places. [2024-11-08 17:10:02,783 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 135 transitions, 368 flow [2024-11-08 17:10:02,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:10:02,784 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:10:02,784 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-08 17:10:02,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 17:10:02,785 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2024-11-08 17:10:02,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:10:02,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1166427170, now seen corresponding path program 1 times [2024-11-08 17:10:02,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:10:02,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150388066] [2024-11-08 17:10:02,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:10:02,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:10:02,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:10:03,227 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:10:03,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:10:03,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150388066] [2024-11-08 17:10:03,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150388066] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:10:03,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116805780] [2024-11-08 17:10:03,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:10:03,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:10:03,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f798aa-02d5-4cb6-9741-91442a799076/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:10:03,230 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f798aa-02d5-4cb6-9741-91442a799076/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:10:03,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f798aa-02d5-4cb6-9741-91442a799076/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:10:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:10:03,330 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-08 17:10:03,336 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:10:03,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-08 17:10:03,605 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:10:03,606 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:10:03,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:10:03,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116805780] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:10:03,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:10:03,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2024-11-08 17:10:03,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103903867] [2024-11-08 17:10:03,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:10:03,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 17:10:03,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:10:03,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 17:10:03,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-08 17:10:04,045 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 134 [2024-11-08 17:10:04,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 135 transitions, 368 flow. Second operand has 12 states, 12 states have (on average 35.75) internal successors, (429), 12 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:10:04,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:10:04,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 134 [2024-11-08 17:10:04,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand