./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65effe5c-da27-4795-82d7-1f38b80e46cb/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65effe5c-da27-4795-82d7-1f38b80e46cb/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65effe5c-da27-4795-82d7-1f38b80e46cb/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65effe5c-da27-4795-82d7-1f38b80e46cb/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65effe5c-da27-4795-82d7-1f38b80e46cb/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65effe5c-da27-4795-82d7-1f38b80e46cb/bin/uautomizer-verify-84ZbGMXZE1 --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 b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 08:58:51,664 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 08:58:51,718 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65effe5c-da27-4795-82d7-1f38b80e46cb/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-12-02 08:58:51,723 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 08:58:51,724 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 08:58:51,746 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 08:58:51,747 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 08:58:51,747 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 08:58:51,747 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 08:58:51,747 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 08:58:51,747 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 08:58:51,747 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 08:58:51,748 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 08:58:51,748 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 08:58:51,748 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 08:58:51,748 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 08:58:51,748 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 08:58:51,748 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 08:58:51,748 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 08:58:51,748 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 08:58:51,748 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-12-02 08:58:51,749 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-12-02 08:58:51,749 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-12-02 08:58:51,749 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 08:58:51,749 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 08:58:51,749 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 08:58:51,749 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 08:58:51,749 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 08:58:51,749 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 08:58:51,749 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 08:58:51,749 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:58:51,749 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:58:51,749 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:58:51,750 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:58:51,750 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 08:58:51,750 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:58:51,750 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:58:51,750 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:58:51,750 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:58:51,750 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 08:58:51,750 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 08:58:51,750 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 08:58:51,750 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 08:58:51,750 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 08:58:51,750 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 08:58:51,751 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 08:58:51,751 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 08:58:51,751 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_65effe5c-da27-4795-82d7-1f38b80e46cb/bin/uautomizer-verify-84ZbGMXZE1 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 -> b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 [2024-12-02 08:58:51,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 08:58:51,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 08:58:51,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 08:58:51,990 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 08:58:51,991 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 08:58:51,992 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65effe5c-da27-4795-82d7-1f38b80e46cb/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i [2024-12-02 08:58:54,545 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65effe5c-da27-4795-82d7-1f38b80e46cb/bin/uautomizer-verify-84ZbGMXZE1/data/5e1b78c38/2df709d59f20497a88a92707ea0ba71a/FLAGd57d86853 [2024-12-02 08:58:54,823 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 08:58:54,824 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65effe5c-da27-4795-82d7-1f38b80e46cb/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i [2024-12-02 08:58:54,838 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65effe5c-da27-4795-82d7-1f38b80e46cb/bin/uautomizer-verify-84ZbGMXZE1/data/5e1b78c38/2df709d59f20497a88a92707ea0ba71a/FLAGd57d86853 [2024-12-02 08:58:55,127 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65effe5c-da27-4795-82d7-1f38b80e46cb/bin/uautomizer-verify-84ZbGMXZE1/data/5e1b78c38/2df709d59f20497a88a92707ea0ba71a [2024-12-02 08:58:55,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 08:58:55,130 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 08:58:55,131 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 08:58:55,131 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 08:58:55,134 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 08:58:55,134 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:58:55" (1/1) ... [2024-12-02 08:58:55,135 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5da060d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:58:55, skipping insertion in model container [2024-12-02 08:58:55,135 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:58:55" (1/1) ... [2024-12-02 08:58:55,161 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 08:58:55,546 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:58:55,564 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 08:58:55,615 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:58:55,662 INFO L204 MainTranslator]: Completed translation [2024-12-02 08:58:55,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:58:55 WrapperNode [2024-12-02 08:58:55,662 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 08:58:55,663 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 08:58:55,663 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 08:58:55,663 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 08:58:55,668 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:58:55" (1/1) ... [2024-12-02 08:58:55,680 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:58:55" (1/1) ... [2024-12-02 08:58:55,699 INFO L138 Inliner]: procedures = 271, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 141 [2024-12-02 08:58:55,699 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 08:58:55,700 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 08:58:55,700 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 08:58:55,700 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 08:58:55,706 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:58:55" (1/1) ... [2024-12-02 08:58:55,706 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:58:55" (1/1) ... [2024-12-02 08:58:55,709 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:58:55" (1/1) ... [2024-12-02 08:58:55,720 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 5, 5, 2]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2024-12-02 08:58:55,720 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:58:55" (1/1) ... [2024-12-02 08:58:55,720 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:58:55" (1/1) ... [2024-12-02 08:58:55,727 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:58:55" (1/1) ... [2024-12-02 08:58:55,728 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:58:55" (1/1) ... [2024-12-02 08:58:55,730 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:58:55" (1/1) ... [2024-12-02 08:58:55,731 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:58:55" (1/1) ... [2024-12-02 08:58:55,732 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:58:55" (1/1) ... [2024-12-02 08:58:55,734 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 08:58:55,734 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 08:58:55,734 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 08:58:55,735 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 08:58:55,735 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:58:55" (1/1) ... [2024-12-02 08:58:55,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:58:55,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65effe5c-da27-4795-82d7-1f38b80e46cb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:58:55,759 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65effe5c-da27-4795-82d7-1f38b80e46cb/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 08:58:55,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65effe5c-da27-4795-82d7-1f38b80e46cb/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 08:58:55,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 08:58:55,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 08:58:55,786 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-12-02 08:58:55,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 08:58:55,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 08:58:55,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 08:58:55,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 08:58:55,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 08:58:55,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 08:58:55,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 08:58:55,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 08:58:55,787 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-12-02 08:58:55,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 08:58:55,787 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-12-02 08:58:55,787 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-12-02 08:58:55,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 08:58:55,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 08:58:55,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 08:58:55,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 08:58:55,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 08:58:55,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 08:58:55,789 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-02 08:58:55,908 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 08:58:55,909 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 08:58:56,154 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 08:58:56,154 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 08:58:56,553 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 08:58:56,553 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-12-02 08:58:56,553 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:58:56 BoogieIcfgContainer [2024-12-02 08:58:56,554 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 08:58:56,556 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 08:58:56,556 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 08:58:56,560 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 08:58:56,561 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:58:55" (1/3) ... [2024-12-02 08:58:56,561 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@384e2a38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:58:56, skipping insertion in model container [2024-12-02 08:58:56,561 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:58:55" (2/3) ... [2024-12-02 08:58:56,562 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@384e2a38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:58:56, skipping insertion in model container [2024-12-02 08:58:56,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:58:56" (3/3) ... [2024-12-02 08:58:56,563 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_08-cond_racefree.i [2024-12-02 08:58:56,579 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 08:58:56,580 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_08-cond_racefree.i that has 2 procedures, 53 locations, 1 initial locations, 6 loop locations, and 6 error locations. [2024-12-02 08:58:56,581 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 08:58:56,624 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-12-02 08:58:56,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 67 transitions, 141 flow [2024-12-02 08:58:56,703 INFO L124 PetriNetUnfolderBase]: 21/105 cut-off events. [2024-12-02 08:58:56,705 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-12-02 08:58:56,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 105 events. 21/105 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 380 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 62. Up to 6 conditions per place. [2024-12-02 08:58:56,710 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 67 transitions, 141 flow [2024-12-02 08:58:56,713 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 67 transitions, 141 flow [2024-12-02 08:58:56,721 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:58:56,732 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;@3d981f61, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:58:56,733 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-12-02 08:58:56,739 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 08:58:56,739 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-12-02 08:58:56,739 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 08:58:56,739 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:58:56,740 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 08:58:56,740 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-12-02 08:58:56,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:58:56,745 INFO L85 PathProgramCache]: Analyzing trace with hash 473127, now seen corresponding path program 1 times [2024-12-02 08:58:56,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:58:56,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398051099] [2024-12-02 08:58:56,753 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:58:56,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:58:56,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:58:57,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:58:57,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:58:57,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398051099] [2024-12-02 08:58:57,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398051099] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:58:57,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:58:57,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 08:58:57,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662144636] [2024-12-02 08:58:57,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:58:57,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:58:57,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:58:57,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:58:57,086 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:58:57,109 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 67 [2024-12-02 08:58:57,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 67 transitions, 141 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:58:57,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:58:57,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 67 [2024-12-02 08:58:57,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:58:57,310 INFO L124 PetriNetUnfolderBase]: 179/511 cut-off events. [2024-12-02 08:58:57,310 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-12-02 08:58:57,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 871 conditions, 511 events. 179/511 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2748 event pairs, 120 based on Foata normal form. 97/577 useless extension candidates. Maximal degree in co-relation 808. Up to 307 conditions per place. [2024-12-02 08:58:57,315 INFO L140 encePairwiseOnDemand]: 53/67 looper letters, 35 selfloop transitions, 2 changer transitions 1/63 dead transitions. [2024-12-02 08:58:57,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 63 transitions, 209 flow [2024-12-02 08:58:57,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:58:57,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 08:58:57,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 131 transitions. [2024-12-02 08:58:57,328 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6517412935323383 [2024-12-02 08:58:57,330 INFO L175 Difference]: Start difference. First operand has 56 places, 67 transitions, 141 flow. Second operand 3 states and 131 transitions. [2024-12-02 08:58:57,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 63 transitions, 209 flow [2024-12-02 08:58:57,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 63 transitions, 209 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 08:58:57,338 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 117 flow [2024-12-02 08:58:57,340 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2024-12-02 08:58:57,343 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-12-02 08:58:57,344 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 117 flow [2024-12-02 08:58:57,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:58:57,344 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:58:57,344 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 08:58:57,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 08:58:57,344 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-12-02 08:58:57,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:58:57,345 INFO L85 PathProgramCache]: Analyzing trace with hash 473128, now seen corresponding path program 1 times [2024-12-02 08:58:57,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:58:57,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145447977] [2024-12-02 08:58:57,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:58:57,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:58:57,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:58:57,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:58:57,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:58:57,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145447977] [2024-12-02 08:58:57,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145447977] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:58:57,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:58:57,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 08:58:57,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914792830] [2024-12-02 08:58:57,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:58:57,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:58:57,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:58:57,576 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:58:57,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:58:57,594 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 67 [2024-12-02 08:58:57,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:58:57,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:58:57,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 67 [2024-12-02 08:58:57,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:58:57,738 INFO L124 PetriNetUnfolderBase]: 141/445 cut-off events. [2024-12-02 08:58:57,738 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-12-02 08:58:57,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 747 conditions, 445 events. 141/445 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2400 event pairs, 61 based on Foata normal form. 1/405 useless extension candidates. Maximal degree in co-relation 712. Up to 267 conditions per place. [2024-12-02 08:58:57,742 INFO L140 encePairwiseOnDemand]: 63/67 looper letters, 35 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2024-12-02 08:58:57,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 63 transitions, 211 flow [2024-12-02 08:58:57,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:58:57,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 08:58:57,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2024-12-02 08:58:57,744 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6119402985074627 [2024-12-02 08:58:57,744 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 117 flow. Second operand 3 states and 123 transitions. [2024-12-02 08:58:57,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 63 transitions, 211 flow [2024-12-02 08:58:57,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 63 transitions, 207 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 08:58:57,748 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 123 flow [2024-12-02 08:58:57,748 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2024-12-02 08:58:57,748 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-12-02 08:58:57,748 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 123 flow [2024-12-02 08:58:57,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:58:57,749 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:58:57,749 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-12-02 08:58:57,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 08:58:57,749 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-12-02 08:58:57,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:58:57,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1129105869, now seen corresponding path program 1 times [2024-12-02 08:58:57,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:58:57,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328247500] [2024-12-02 08:58:57,750 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:58:57,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:58:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:58:57,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:58:57,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:58:57,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328247500] [2024-12-02 08:58:57,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328247500] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:58:57,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:58:57,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 08:58:57,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183381931] [2024-12-02 08:58:57,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:58:57,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:58:57,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:58:57,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:58:57,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:58:57,988 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 67 [2024-12-02 08:58:57,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:58:57,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:58:57,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 67 [2024-12-02 08:58:57,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:58:58,168 INFO L124 PetriNetUnfolderBase]: 129/433 cut-off events. [2024-12-02 08:58:58,168 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-12-02 08:58:58,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 716 conditions, 433 events. 129/433 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2317 event pairs, 8 based on Foata normal form. 10/400 useless extension candidates. Maximal degree in co-relation 687. Up to 195 conditions per place. [2024-12-02 08:58:58,172 INFO L140 encePairwiseOnDemand]: 63/67 looper letters, 42 selfloop transitions, 3 changer transitions 0/71 dead transitions. [2024-12-02 08:58:58,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 71 transitions, 247 flow [2024-12-02 08:58:58,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:58:58,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 08:58:58,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 158 transitions. [2024-12-02 08:58:58,174 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5895522388059702 [2024-12-02 08:58:58,174 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 123 flow. Second operand 4 states and 158 transitions. [2024-12-02 08:58:58,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 71 transitions, 247 flow [2024-12-02 08:58:58,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 71 transitions, 243 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 08:58:58,177 INFO L231 Difference]: Finished difference. Result has 55 places, 52 transitions, 121 flow [2024-12-02 08:58:58,177 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=121, PETRI_PLACES=55, PETRI_TRANSITIONS=52} [2024-12-02 08:58:58,178 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-12-02 08:58:58,178 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 52 transitions, 121 flow [2024-12-02 08:58:58,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:58:58,178 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:58:58,179 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-12-02 08:58:58,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 08:58:58,179 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-12-02 08:58:58,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:58:58,180 INFO L85 PathProgramCache]: Analyzing trace with hash -642543121, now seen corresponding path program 1 times [2024-12-02 08:58:58,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:58:58,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610253054] [2024-12-02 08:58:58,180 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:58:58,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:58:58,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 08:58:58,233 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 08:58:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 08:58:58,274 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 08:58:58,274 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 08:58:58,275 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-12-02 08:58:58,277 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-12-02 08:58:58,277 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-12-02 08:58:58,277 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-12-02 08:58:58,277 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2024-12-02 08:58:58,277 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 7 remaining) [2024-12-02 08:58:58,278 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-12-02 08:58:58,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 08:58:58,278 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-12-02 08:58:58,281 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 08:58:58,281 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-12-02 08:58:58,314 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-12-02 08:58:58,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 92 transitions, 200 flow [2024-12-02 08:58:58,343 INFO L124 PetriNetUnfolderBase]: 36/180 cut-off events. [2024-12-02 08:58:58,343 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-12-02 08:58:58,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 180 events. 36/180 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 749 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 109. Up to 9 conditions per place. [2024-12-02 08:58:58,345 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 92 transitions, 200 flow [2024-12-02 08:58:58,347 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 92 transitions, 200 flow [2024-12-02 08:58:58,348 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:58:58,349 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;@3d981f61, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:58:58,349 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-12-02 08:58:58,353 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 08:58:58,353 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-12-02 08:58:58,353 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 08:58:58,354 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:58:58,354 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 08:58:58,354 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-12-02 08:58:58,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:58:58,354 INFO L85 PathProgramCache]: Analyzing trace with hash 564483, now seen corresponding path program 1 times [2024-12-02 08:58:58,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:58:58,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063152232] [2024-12-02 08:58:58,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:58:58,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:58:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:58:58,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:58:58,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:58:58,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063152232] [2024-12-02 08:58:58,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063152232] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:58:58,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:58:58,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 08:58:58,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831385191] [2024-12-02 08:58:58,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:58:58,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:58:58,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:58:58,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:58:58,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:58:58,461 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 92 [2024-12-02 08:58:58,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 92 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:58:58,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:58:58,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 92 [2024-12-02 08:58:58,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:58:59,464 INFO L124 PetriNetUnfolderBase]: 3559/6891 cut-off events. [2024-12-02 08:58:59,464 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-12-02 08:58:59,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12422 conditions, 6891 events. 3559/6891 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 52261 event pairs, 2735 based on Foata normal form. 1720/8316 useless extension candidates. Maximal degree in co-relation 9137. Up to 4731 conditions per place. [2024-12-02 08:58:59,510 INFO L140 encePairwiseOnDemand]: 72/92 looper letters, 55 selfloop transitions, 2 changer transitions 1/91 dead transitions. [2024-12-02 08:58:59,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 91 transitions, 314 flow [2024-12-02 08:58:59,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:58:59,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 08:58:59,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 187 transitions. [2024-12-02 08:58:59,513 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.677536231884058 [2024-12-02 08:58:59,513 INFO L175 Difference]: Start difference. First operand has 76 places, 92 transitions, 200 flow. Second operand 3 states and 187 transitions. [2024-12-02 08:58:59,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 91 transitions, 314 flow [2024-12-02 08:58:59,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 91 transitions, 314 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 08:58:59,516 INFO L231 Difference]: Finished difference. Result has 75 places, 72 transitions, 164 flow [2024-12-02 08:58:59,517 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=75, PETRI_TRANSITIONS=72} [2024-12-02 08:58:59,517 INFO L279 CegarLoopForPetriNet]: 76 programPoint places, -1 predicate places. [2024-12-02 08:58:59,517 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 72 transitions, 164 flow [2024-12-02 08:58:59,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:58:59,518 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:58:59,518 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 08:58:59,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 08:58:59,518 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-12-02 08:58:59,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:58:59,519 INFO L85 PathProgramCache]: Analyzing trace with hash 564484, now seen corresponding path program 1 times [2024-12-02 08:58:59,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:58:59,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211850245] [2024-12-02 08:58:59,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:58:59,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:58:59,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:58:59,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:58:59,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:58:59,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211850245] [2024-12-02 08:58:59,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211850245] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:58:59,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:58:59,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 08:58:59,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408009150] [2024-12-02 08:58:59,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:58:59,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:58:59,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:58:59,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:58:59,647 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:58:59,659 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 92 [2024-12-02 08:58:59,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 72 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:58:59,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:58:59,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 92 [2024-12-02 08:58:59,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:59:00,351 INFO L124 PetriNetUnfolderBase]: 2998/6181 cut-off events. [2024-12-02 08:59:00,351 INFO L125 PetriNetUnfolderBase]: For 318/318 co-relation queries the response was YES. [2024-12-02 08:59:00,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11022 conditions, 6181 events. 2998/6181 cut-off events. For 318/318 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 49125 event pairs, 1227 based on Foata normal form. 1/5827 useless extension candidates. Maximal degree in co-relation 9944. Up to 4562 conditions per place. [2024-12-02 08:59:00,394 INFO L140 encePairwiseOnDemand]: 88/92 looper letters, 47 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2024-12-02 08:59:00,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 83 transitions, 284 flow [2024-12-02 08:59:00,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:59:00,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 08:59:00,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 159 transitions. [2024-12-02 08:59:00,396 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5760869565217391 [2024-12-02 08:59:00,396 INFO L175 Difference]: Start difference. First operand has 75 places, 72 transitions, 164 flow. Second operand 3 states and 159 transitions. [2024-12-02 08:59:00,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 83 transitions, 284 flow [2024-12-02 08:59:00,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 83 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 08:59:00,406 INFO L231 Difference]: Finished difference. Result has 75 places, 73 transitions, 174 flow [2024-12-02 08:59:00,406 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=75, PETRI_TRANSITIONS=73} [2024-12-02 08:59:00,407 INFO L279 CegarLoopForPetriNet]: 76 programPoint places, -1 predicate places. [2024-12-02 08:59:00,407 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 73 transitions, 174 flow [2024-12-02 08:59:00,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:59:00,407 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:59:00,407 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-12-02 08:59:00,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 08:59:00,407 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-12-02 08:59:00,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:59:00,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1639217304, now seen corresponding path program 1 times [2024-12-02 08:59:00,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:59:00,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230804869] [2024-12-02 08:59:00,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:59:00,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:59:00,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:59:00,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:59:00,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:59:00,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230804869] [2024-12-02 08:59:00,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230804869] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:59:00,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:59:00,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 08:59:00,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855066907] [2024-12-02 08:59:00,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:59:00,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:59:00,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:59:00,577 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:59:00,577 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:59:00,601 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 92 [2024-12-02 08:59:00,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 73 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:59:00,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:59:00,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 92 [2024-12-02 08:59:00,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:59:01,293 INFO L124 PetriNetUnfolderBase]: 3067/6202 cut-off events. [2024-12-02 08:59:01,294 INFO L125 PetriNetUnfolderBase]: For 403/403 co-relation queries the response was YES. [2024-12-02 08:59:01,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11304 conditions, 6202 events. 3067/6202 cut-off events. For 403/403 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 48229 event pairs, 1177 based on Foata normal form. 10/6030 useless extension candidates. Maximal degree in co-relation 1136. Up to 4453 conditions per place. [2024-12-02 08:59:01,329 INFO L140 encePairwiseOnDemand]: 88/92 looper letters, 65 selfloop transitions, 4 changer transitions 0/103 dead transitions. [2024-12-02 08:59:01,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 103 transitions, 374 flow [2024-12-02 08:59:01,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:59:01,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 08:59:01,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 214 transitions. [2024-12-02 08:59:01,331 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5815217391304348 [2024-12-02 08:59:01,331 INFO L175 Difference]: Start difference. First operand has 75 places, 73 transitions, 174 flow. Second operand 4 states and 214 transitions. [2024-12-02 08:59:01,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 103 transitions, 374 flow [2024-12-02 08:59:01,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 103 transitions, 372 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 08:59:01,334 INFO L231 Difference]: Finished difference. Result has 78 places, 74 transitions, 191 flow [2024-12-02 08:59:01,334 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=191, PETRI_PLACES=78, PETRI_TRANSITIONS=74} [2024-12-02 08:59:01,335 INFO L279 CegarLoopForPetriNet]: 76 programPoint places, 2 predicate places. [2024-12-02 08:59:01,335 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 74 transitions, 191 flow [2024-12-02 08:59:01,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:59:01,335 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:59:01,335 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2024-12-02 08:59:01,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 08:59:01,335 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-12-02 08:59:01,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:59:01,336 INFO L85 PathProgramCache]: Analyzing trace with hash 203480715, now seen corresponding path program 1 times [2024-12-02 08:59:01,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:59:01,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810316950] [2024-12-02 08:59:01,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:59:01,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:59:01,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:59:01,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:59:01,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:59:01,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810316950] [2024-12-02 08:59:01,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810316950] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:59:01,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:59:01,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:59:01,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088461019] [2024-12-02 08:59:01,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:59:01,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:59:01,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:59:01,578 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:59:01,578 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:59:01,619 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 92 [2024-12-02 08:59:01,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 74 transitions, 191 flow. Second operand has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:59:01,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:59:01,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 92 [2024-12-02 08:59:01,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:59:02,417 INFO L124 PetriNetUnfolderBase]: 3120/6045 cut-off events. [2024-12-02 08:59:02,418 INFO L125 PetriNetUnfolderBase]: For 919/919 co-relation queries the response was YES. [2024-12-02 08:59:02,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11484 conditions, 6045 events. 3120/6045 cut-off events. For 919/919 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 44617 event pairs, 1851 based on Foata normal form. 100/6032 useless extension candidates. Maximal degree in co-relation 7077. Up to 3705 conditions per place. [2024-12-02 08:59:02,451 INFO L140 encePairwiseOnDemand]: 87/92 looper letters, 101 selfloop transitions, 6 changer transitions 0/140 dead transitions. [2024-12-02 08:59:02,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 140 transitions, 533 flow [2024-12-02 08:59:02,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:59:02,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 08:59:02,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 318 transitions. [2024-12-02 08:59:02,454 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5760869565217391 [2024-12-02 08:59:02,454 INFO L175 Difference]: Start difference. First operand has 78 places, 74 transitions, 191 flow. Second operand 6 states and 318 transitions. [2024-12-02 08:59:02,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 140 transitions, 533 flow [2024-12-02 08:59:02,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 140 transitions, 524 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-12-02 08:59:02,458 INFO L231 Difference]: Finished difference. Result has 81 places, 74 transitions, 195 flow [2024-12-02 08:59:02,458 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=195, PETRI_PLACES=81, PETRI_TRANSITIONS=74} [2024-12-02 08:59:02,459 INFO L279 CegarLoopForPetriNet]: 76 programPoint places, 5 predicate places. [2024-12-02 08:59:02,459 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 74 transitions, 195 flow [2024-12-02 08:59:02,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:59:02,459 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:59:02,460 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2024-12-02 08:59:02,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 08:59:02,460 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-12-02 08:59:02,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:59:02,461 INFO L85 PathProgramCache]: Analyzing trace with hash 2012935434, now seen corresponding path program 1 times [2024-12-02 08:59:02,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:59:02,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232130794] [2024-12-02 08:59:02,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:59:02,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:59:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 08:59:02,503 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 08:59:02,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 08:59:02,526 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 08:59:02,526 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 08:59:02,526 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-12-02 08:59:02,526 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-12-02 08:59:02,526 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-12-02 08:59:02,526 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-12-02 08:59:02,527 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2024-12-02 08:59:02,527 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 7 remaining) [2024-12-02 08:59:02,527 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-12-02 08:59:02,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 08:59:02,527 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-12-02 08:59:02,528 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 08:59:02,528 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-12-02 08:59:02,555 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-12-02 08:59:02,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 117 transitions, 261 flow [2024-12-02 08:59:02,582 INFO L124 PetriNetUnfolderBase]: 54/276 cut-off events. [2024-12-02 08:59:02,582 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-12-02 08:59:02,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 276 events. 54/276 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1238 event pairs, 1 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 191. Up to 12 conditions per place. [2024-12-02 08:59:02,584 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 117 transitions, 261 flow [2024-12-02 08:59:02,587 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 117 transitions, 261 flow [2024-12-02 08:59:02,588 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:59:02,588 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;@3d981f61, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:59:02,589 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-12-02 08:59:02,591 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 08:59:02,591 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-12-02 08:59:02,591 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 08:59:02,591 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:59:02,591 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 08:59:02,591 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-12-02 08:59:02,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:59:02,592 INFO L85 PathProgramCache]: Analyzing trace with hash 680664, now seen corresponding path program 1 times [2024-12-02 08:59:02,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:59:02,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174158296] [2024-12-02 08:59:02,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:59:02,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:59:02,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:59:02,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:59:02,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:59:02,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174158296] [2024-12-02 08:59:02,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174158296] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:59:02,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:59:02,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 08:59:02,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043751360] [2024-12-02 08:59:02,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:59:02,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:59:02,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:59:02,657 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:59:02,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:59:02,668 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 117 [2024-12-02 08:59:02,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 117 transitions, 261 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:59:02,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:59:02,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 117 [2024-12-02 08:59:02,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:59:07,972 INFO L124 PetriNetUnfolderBase]: 53626/87325 cut-off events. [2024-12-02 08:59:07,972 INFO L125 PetriNetUnfolderBase]: For 1236/1236 co-relation queries the response was YES. [2024-12-02 08:59:08,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161738 conditions, 87325 events. 53626/87325 cut-off events. For 1236/1236 co-relation queries the response was YES. Maximal size of possible extension queue 2347. Compared 782049 event pairs, 43458 based on Foata normal form. 25258/109403 useless extension candidates. Maximal degree in co-relation 58750. Up to 63282 conditions per place. [2024-12-02 08:59:08,266 INFO L140 encePairwiseOnDemand]: 91/117 looper letters, 75 selfloop transitions, 2 changer transitions 1/119 dead transitions. [2024-12-02 08:59:08,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 119 transitions, 421 flow [2024-12-02 08:59:08,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:59:08,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 08:59:08,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 243 transitions. [2024-12-02 08:59:08,268 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6923076923076923 [2024-12-02 08:59:08,268 INFO L175 Difference]: Start difference. First operand has 96 places, 117 transitions, 261 flow. Second operand 3 states and 243 transitions. [2024-12-02 08:59:08,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 119 transitions, 421 flow [2024-12-02 08:59:08,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 119 transitions, 421 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 08:59:08,274 INFO L231 Difference]: Finished difference. Result has 95 places, 91 transitions, 213 flow [2024-12-02 08:59:08,274 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=213, PETRI_PLACES=95, PETRI_TRANSITIONS=91} [2024-12-02 08:59:08,274 INFO L279 CegarLoopForPetriNet]: 96 programPoint places, -1 predicate places. [2024-12-02 08:59:08,274 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 91 transitions, 213 flow [2024-12-02 08:59:08,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:59:08,275 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:59:08,275 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 08:59:08,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 08:59:08,275 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-12-02 08:59:08,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:59:08,275 INFO L85 PathProgramCache]: Analyzing trace with hash 680665, now seen corresponding path program 1 times [2024-12-02 08:59:08,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:59:08,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377061903] [2024-12-02 08:59:08,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:59:08,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:59:08,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:59:08,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:59:08,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:59:08,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377061903] [2024-12-02 08:59:08,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377061903] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:59:08,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:59:08,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 08:59:08,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868080382] [2024-12-02 08:59:08,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:59:08,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:59:08,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:59:08,365 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:59:08,365 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:59:08,375 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 117 [2024-12-02 08:59:08,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 91 transitions, 213 flow. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:59:08,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:59:08,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 117 [2024-12-02 08:59:08,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:59:13,051 INFO L124 PetriNetUnfolderBase]: 46695/77911 cut-off events. [2024-12-02 08:59:13,051 INFO L125 PetriNetUnfolderBase]: For 4252/4252 co-relation queries the response was YES. [2024-12-02 08:59:13,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145198 conditions, 77911 events. 46695/77911 cut-off events. For 4252/4252 co-relation queries the response was YES. Maximal size of possible extension queue 2097. Compared 708932 event pairs, 27954 based on Foata normal form. 1/74614 useless extension candidates. Maximal degree in co-relation 130511. Up to 63779 conditions per place. [2024-12-02 08:59:13,453 INFO L140 encePairwiseOnDemand]: 113/117 looper letters, 58 selfloop transitions, 2 changer transitions 0/102 dead transitions. [2024-12-02 08:59:13,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 102 transitions, 355 flow [2024-12-02 08:59:13,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:59:13,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 08:59:13,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 194 transitions. [2024-12-02 08:59:13,454 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5527065527065527 [2024-12-02 08:59:13,454 INFO L175 Difference]: Start difference. First operand has 95 places, 91 transitions, 213 flow. Second operand 3 states and 194 transitions. [2024-12-02 08:59:13,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 102 transitions, 355 flow [2024-12-02 08:59:13,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 102 transitions, 351 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 08:59:13,640 INFO L231 Difference]: Finished difference. Result has 95 places, 92 transitions, 223 flow [2024-12-02 08:59:13,640 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=223, PETRI_PLACES=95, PETRI_TRANSITIONS=92} [2024-12-02 08:59:13,641 INFO L279 CegarLoopForPetriNet]: 96 programPoint places, -1 predicate places. [2024-12-02 08:59:13,641 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 92 transitions, 223 flow [2024-12-02 08:59:13,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:59:13,641 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:59:13,641 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-12-02 08:59:13,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 08:59:13,641 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-12-02 08:59:13,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:59:13,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1564915126, now seen corresponding path program 1 times [2024-12-02 08:59:13,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:59:13,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502580284] [2024-12-02 08:59:13,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:59:13,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:59:13,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:59:13,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:59:13,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:59:13,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502580284] [2024-12-02 08:59:13,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502580284] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:59:13,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:59:13,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 08:59:13,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361482720] [2024-12-02 08:59:13,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:59:13,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:59:13,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:59:13,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:59:13,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:59:13,775 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 117 [2024-12-02 08:59:13,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 92 transitions, 223 flow. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:59:13,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:59:13,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 117 [2024-12-02 08:59:13,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:59:18,099 INFO L124 PetriNetUnfolderBase]: 46978/77592 cut-off events. [2024-12-02 08:59:18,099 INFO L125 PetriNetUnfolderBase]: For 4989/4989 co-relation queries the response was YES. [2024-12-02 08:59:18,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146410 conditions, 77592 events. 46978/77592 cut-off events. For 4989/4989 co-relation queries the response was YES. Maximal size of possible extension queue 2029. Compared 692105 event pairs, 40104 based on Foata normal form. 10/75627 useless extension candidates. Maximal degree in co-relation 131847. Up to 64104 conditions per place. [2024-12-02 08:59:18,440 INFO L140 encePairwiseOnDemand]: 113/117 looper letters, 77 selfloop transitions, 4 changer transitions 0/123 dead transitions. [2024-12-02 08:59:18,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 123 transitions, 451 flow [2024-12-02 08:59:18,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:59:18,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 08:59:18,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 258 transitions. [2024-12-02 08:59:18,442 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5512820512820513 [2024-12-02 08:59:18,442 INFO L175 Difference]: Start difference. First operand has 95 places, 92 transitions, 223 flow. Second operand 4 states and 258 transitions. [2024-12-02 08:59:18,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 123 transitions, 451 flow [2024-12-02 08:59:18,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 123 transitions, 449 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 08:59:18,446 INFO L231 Difference]: Finished difference. Result has 98 places, 94 transitions, 246 flow [2024-12-02 08:59:18,446 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=246, PETRI_PLACES=98, PETRI_TRANSITIONS=94} [2024-12-02 08:59:18,447 INFO L279 CegarLoopForPetriNet]: 96 programPoint places, 2 predicate places. [2024-12-02 08:59:18,447 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 94 transitions, 246 flow [2024-12-02 08:59:18,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:59:18,447 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:59:18,447 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2024-12-02 08:59:18,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 08:59:18,447 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-12-02 08:59:18,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:59:18,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1278527090, now seen corresponding path program 1 times [2024-12-02 08:59:18,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:59:18,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709494441] [2024-12-02 08:59:18,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:59:18,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:59:18,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:59:18,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:59:18,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:59:18,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709494441] [2024-12-02 08:59:18,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709494441] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:59:18,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:59:18,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:59:18,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255974915] [2024-12-02 08:59:18,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:59:18,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:59:18,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:59:18,781 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:59:18,781 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:59:18,814 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 117 [2024-12-02 08:59:18,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 94 transitions, 246 flow. Second operand has 6 states, 6 states have (on average 44.833333333333336) internal successors, (269), 6 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:59:18,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:59:18,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 117 [2024-12-02 08:59:18,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:59:23,367 INFO L124 PetriNetUnfolderBase]: 47362/77087 cut-off events. [2024-12-02 08:59:23,367 INFO L125 PetriNetUnfolderBase]: For 11596/11596 co-relation queries the response was YES. [2024-12-02 08:59:23,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147626 conditions, 77087 events. 47362/77087 cut-off events. For 11596/11596 co-relation queries the response was YES. Maximal size of possible extension queue 2034. Compared 670513 event pairs, 31066 based on Foata normal form. 1100/76776 useless extension candidates. Maximal degree in co-relation 100471. Up to 49843 conditions per place. [2024-12-02 08:59:23,660 INFO L140 encePairwiseOnDemand]: 112/117 looper letters, 130 selfloop transitions, 7 changer transitions 0/178 dead transitions. [2024-12-02 08:59:23,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 178 transitions, 684 flow [2024-12-02 08:59:23,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:59:23,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 08:59:23,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 396 transitions. [2024-12-02 08:59:23,662 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5641025641025641 [2024-12-02 08:59:23,662 INFO L175 Difference]: Start difference. First operand has 98 places, 94 transitions, 246 flow. Second operand 6 states and 396 transitions. [2024-12-02 08:59:23,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 178 transitions, 684 flow [2024-12-02 08:59:23,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 178 transitions, 675 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-12-02 08:59:23,688 INFO L231 Difference]: Finished difference. Result has 101 places, 94 transitions, 253 flow [2024-12-02 08:59:23,688 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=253, PETRI_PLACES=101, PETRI_TRANSITIONS=94} [2024-12-02 08:59:23,689 INFO L279 CegarLoopForPetriNet]: 96 programPoint places, 5 predicate places. [2024-12-02 08:59:23,689 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 94 transitions, 253 flow [2024-12-02 08:59:23,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.833333333333336) internal successors, (269), 6 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:59:23,689 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:59:23,689 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:59:23,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 08:59:23,689 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-12-02 08:59:23,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:59:23,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1160441566, now seen corresponding path program 1 times [2024-12-02 08:59:23,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:59:23,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131049331] [2024-12-02 08:59:23,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:59:23,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:59:23,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:59:23,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:59:23,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:59:23,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131049331] [2024-12-02 08:59:23,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131049331] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:59:23,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:59:23,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:59:23,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36708963] [2024-12-02 08:59:23,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:59:23,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:59:23,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:59:23,759 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:59:23,759 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:59:23,765 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 117 [2024-12-02 08:59:23,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 94 transitions, 253 flow. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:59:23,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:59:23,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 117 [2024-12-02 08:59:23,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:59:28,438 INFO L124 PetriNetUnfolderBase]: 43951/73799 cut-off events. [2024-12-02 08:59:28,439 INFO L125 PetriNetUnfolderBase]: For 19749/19749 co-relation queries the response was YES. [2024-12-02 08:59:28,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144686 conditions, 73799 events. 43951/73799 cut-off events. For 19749/19749 co-relation queries the response was YES. Maximal size of possible extension queue 2038. Compared 673043 event pairs, 25995 based on Foata normal form. 10/71612 useless extension candidates. Maximal degree in co-relation 13319. Up to 59677 conditions per place. [2024-12-02 08:59:28,701 INFO L140 encePairwiseOnDemand]: 114/117 looper letters, 76 selfloop transitions, 3 changer transitions 0/121 dead transitions. [2024-12-02 08:59:28,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 121 transitions, 463 flow [2024-12-02 08:59:28,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:59:28,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 08:59:28,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 260 transitions. [2024-12-02 08:59:28,702 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-12-02 08:59:28,702 INFO L175 Difference]: Start difference. First operand has 101 places, 94 transitions, 253 flow. Second operand 4 states and 260 transitions. [2024-12-02 08:59:28,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 121 transitions, 463 flow [2024-12-02 08:59:28,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 121 transitions, 445 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-12-02 08:59:28,710 INFO L231 Difference]: Finished difference. Result has 99 places, 93 transitions, 235 flow [2024-12-02 08:59:28,710 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=235, PETRI_PLACES=99, PETRI_TRANSITIONS=93} [2024-12-02 08:59:28,711 INFO L279 CegarLoopForPetriNet]: 96 programPoint places, 3 predicate places. [2024-12-02 08:59:28,711 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 93 transitions, 235 flow [2024-12-02 08:59:28,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:59:28,711 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:59:28,711 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1] [2024-12-02 08:59:28,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 08:59:28,711 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-12-02 08:59:28,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:59:28,712 INFO L85 PathProgramCache]: Analyzing trace with hash -23255340, now seen corresponding path program 1 times [2024-12-02 08:59:28,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:59:28,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230890784] [2024-12-02 08:59:28,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:59:28,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:59:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 08:59:28,740 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 08:59:28,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 08:59:28,758 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 08:59:28,758 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 08:59:28,758 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-12-02 08:59:28,758 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-12-02 08:59:28,758 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-12-02 08:59:28,758 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-12-02 08:59:28,758 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2024-12-02 08:59:28,759 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 7 remaining) [2024-12-02 08:59:28,759 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-12-02 08:59:28,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 08:59:28,759 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-12-02 08:59:28,759 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 08:59:28,760 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-12-02 08:59:28,784 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-12-02 08:59:28,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 142 transitions, 324 flow [2024-12-02 08:59:28,817 INFO L124 PetriNetUnfolderBase]: 80/416 cut-off events. [2024-12-02 08:59:28,818 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-12-02 08:59:28,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 467 conditions, 416 events. 80/416 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2022 event pairs, 6 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 300. Up to 32 conditions per place. [2024-12-02 08:59:28,821 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 142 transitions, 324 flow [2024-12-02 08:59:28,823 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 142 transitions, 324 flow [2024-12-02 08:59:28,824 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:59:28,824 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;@3d981f61, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:59:28,824 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-12-02 08:59:28,826 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 08:59:28,826 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-12-02 08:59:28,826 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 08:59:28,826 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:59:28,826 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 08:59:28,826 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-12-02 08:59:28,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:59:28,827 INFO L85 PathProgramCache]: Analyzing trace with hash 821670, now seen corresponding path program 1 times [2024-12-02 08:59:28,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:59:28,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144222901] [2024-12-02 08:59:28,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:59:28,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:59:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:59:28,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:59:28,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:59:28,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144222901] [2024-12-02 08:59:28,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144222901] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:59:28,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:59:28,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 08:59:28,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665122179] [2024-12-02 08:59:28,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:59:28,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:59:28,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:59:28,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:59:28,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:59:28,886 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 142 [2024-12-02 08:59:28,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 142 transitions, 324 flow. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:59:28,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:59:28,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 142 [2024-12-02 08:59:28,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand