./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.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_dcef50c8-1369-4dda-8679-b7abc9d7ea4a/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcef50c8-1369-4dda-8679-b7abc9d7ea4a/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_dcef50c8-1369-4dda-8679-b7abc9d7ea4a/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcef50c8-1369-4dda-8679-b7abc9d7ea4a/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcef50c8-1369-4dda-8679-b7abc9d7ea4a/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_dcef50c8-1369-4dda-8679-b7abc9d7ea4a/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 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 13:31:46,522 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 13:31:46,581 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcef50c8-1369-4dda-8679-b7abc9d7ea4a/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-12-02 13:31:46,586 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 13:31:46,586 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 13:31:46,609 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 13:31:46,610 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 13:31:46,610 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 13:31:46,610 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 13:31:46,610 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 13:31:46,610 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 13:31:46,610 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 13:31:46,611 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 13:31:46,611 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 13:31:46,611 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 13:31:46,611 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 13:31:46,611 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 13:31:46,611 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 13:31:46,611 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 13:31:46,611 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 13:31:46,612 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-12-02 13:31:46,612 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-12-02 13:31:46,612 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-12-02 13:31:46,612 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 13:31:46,612 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 13:31:46,612 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 13:31:46,612 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 13:31:46,612 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 13:31:46,612 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 13:31:46,612 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 13:31:46,612 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:31:46,612 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:31:46,613 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:31:46,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:31:46,613 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 13:31:46,613 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:31:46,613 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:31:46,613 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:31:46,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:31:46,613 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 13:31:46,613 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 13:31:46,613 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 13:31:46,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 13:31:46,613 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 13:31:46,614 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 13:31:46,614 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 13:31:46,614 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 13:31:46,614 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_dcef50c8-1369-4dda-8679-b7abc9d7ea4a/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 -> 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b [2024-12-02 13:31:46,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 13:31:46,837 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 13:31:46,839 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 13:31:46,840 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 13:31:46,841 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 13:31:46,842 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcef50c8-1369-4dda-8679-b7abc9d7ea4a/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i [2024-12-02 13:31:49,550 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcef50c8-1369-4dda-8679-b7abc9d7ea4a/bin/uautomizer-verify-84ZbGMXZE1/data/5300380dc/6ef7539184ee42b08a0a9f5d152c7565/FLAG97a3d2031 [2024-12-02 13:31:49,796 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 13:31:49,796 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcef50c8-1369-4dda-8679-b7abc9d7ea4a/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i [2024-12-02 13:31:49,808 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcef50c8-1369-4dda-8679-b7abc9d7ea4a/bin/uautomizer-verify-84ZbGMXZE1/data/5300380dc/6ef7539184ee42b08a0a9f5d152c7565/FLAG97a3d2031 [2024-12-02 13:31:49,822 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcef50c8-1369-4dda-8679-b7abc9d7ea4a/bin/uautomizer-verify-84ZbGMXZE1/data/5300380dc/6ef7539184ee42b08a0a9f5d152c7565 [2024-12-02 13:31:49,823 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 13:31:49,824 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 13:31:49,826 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 13:31:49,826 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 13:31:49,829 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 13:31:49,830 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:31:49" (1/1) ... [2024-12-02 13:31:49,830 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ff6748a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:31:49, skipping insertion in model container [2024-12-02 13:31:49,830 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:31:49" (1/1) ... [2024-12-02 13:31:49,858 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 13:31:50,247 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:31:50,265 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 13:31:50,312 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:31:50,355 INFO L204 MainTranslator]: Completed translation [2024-12-02 13:31:50,356 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:31:50 WrapperNode [2024-12-02 13:31:50,356 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 13:31:50,357 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 13:31:50,357 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 13:31:50,357 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 13:31:50,361 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:31:50" (1/1) ... [2024-12-02 13:31:50,374 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:31:50" (1/1) ... [2024-12-02 13:31:50,396 INFO L138 Inliner]: procedures = 279, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 256 [2024-12-02 13:31:50,396 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 13:31:50,397 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 13:31:50,397 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 13:31:50,397 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 13:31:50,406 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:31:50" (1/1) ... [2024-12-02 13:31:50,407 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:31:50" (1/1) ... [2024-12-02 13:31:50,411 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:31:50" (1/1) ... [2024-12-02 13:31:50,429 INFO L175 MemorySlicer]: Split 30 memory accesses to 6 slices as follows [2, 2, 5, 5, 14, 2]. 47 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 0, 5, 5, 0, 0]. The 10 writes are split as follows [0, 1, 0, 0, 8, 1]. [2024-12-02 13:31:50,429 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:31:50" (1/1) ... [2024-12-02 13:31:50,429 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:31:50" (1/1) ... [2024-12-02 13:31:50,443 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:31:50" (1/1) ... [2024-12-02 13:31:50,444 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:31:50" (1/1) ... [2024-12-02 13:31:50,448 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:31:50" (1/1) ... [2024-12-02 13:31:50,450 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:31:50" (1/1) ... [2024-12-02 13:31:50,452 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:31:50" (1/1) ... [2024-12-02 13:31:50,456 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 13:31:50,457 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 13:31:50,457 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 13:31:50,457 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 13:31:50,458 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:31:50" (1/1) ... [2024-12-02 13:31:50,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:31:50,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcef50c8-1369-4dda-8679-b7abc9d7ea4a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:31:50,480 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcef50c8-1369-4dda-8679-b7abc9d7ea4a/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 13:31:50,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcef50c8-1369-4dda-8679-b7abc9d7ea4a/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 13:31:50,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 13:31:50,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-12-02 13:31:50,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-12-02 13:31:50,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-12-02 13:31:50,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-12-02 13:31:50,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-12-02 13:31:50,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-12-02 13:31:50,503 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2024-12-02 13:31:50,503 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2024-12-02 13:31:50,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 13:31:50,503 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-12-02 13:31:50,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 13:31:50,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 13:31:50,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 13:31:50,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 13:31:50,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-02 13:31:50,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-12-02 13:31:50,504 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-12-02 13:31:50,504 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-12-02 13:31:50,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 13:31:50,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 13:31:50,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 13:31:50,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 13:31:50,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-12-02 13:31:50,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-12-02 13:31:50,504 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-12-02 13:31:50,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 13:31:50,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 13:31:50,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-02 13:31:50,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-02 13:31:50,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-12-02 13:31:50,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-12-02 13:31:50,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-12-02 13:31:50,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-12-02 13:31:50,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 13:31:50,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 13:31:50,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 13:31:50,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 13:31:50,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 13:31:50,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 13:31:50,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 13:31:50,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 13:31:50,506 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 13:31:50,661 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 13:31:50,662 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 13:31:51,061 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 13:31:51,061 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 13:31:51,341 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 13:31:51,341 INFO L312 CfgBuilder]: Removed 10 assume(true) statements. [2024-12-02 13:31:51,342 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:31:51 BoogieIcfgContainer [2024-12-02 13:31:51,342 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 13:31:51,344 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 13:31:51,344 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 13:31:51,348 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 13:31:51,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:31:49" (1/3) ... [2024-12-02 13:31:51,349 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d133e1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:31:51, skipping insertion in model container [2024-12-02 13:31:51,349 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:31:50" (2/3) ... [2024-12-02 13:31:51,349 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d133e1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:31:51, skipping insertion in model container [2024-12-02 13:31:51,349 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:31:51" (3/3) ... [2024-12-02 13:31:51,351 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_81-list_racing.i [2024-12-02 13:31:51,366 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 13:31:51,368 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_81-list_racing.i that has 3 procedures, 110 locations, 1 initial locations, 10 loop locations, and 38 error locations. [2024-12-02 13:31:51,368 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 13:31:51,453 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-12-02 13:31:51,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 130 transitions, 280 flow [2024-12-02 13:31:51,562 INFO L124 PetriNetUnfolderBase]: 38/266 cut-off events. [2024-12-02 13:31:51,564 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-12-02 13:31:51,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 266 events. 38/266 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1404 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 140. Up to 8 conditions per place. [2024-12-02 13:31:51,569 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 130 transitions, 280 flow [2024-12-02 13:31:51,575 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 130 transitions, 280 flow [2024-12-02 13:31:51,583 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 13:31:51,594 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;@7a863977, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 13:31:51,594 INFO L334 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2024-12-02 13:31:51,599 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 13:31:51,600 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2024-12-02 13:31:51,600 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 13:31:51,600 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:31:51,600 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-12-02 13:31:51,601 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-02 13:31:51,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:31:51,606 INFO L85 PathProgramCache]: Analyzing trace with hash 22521, now seen corresponding path program 1 times [2024-12-02 13:31:51,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:31:51,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701464669] [2024-12-02 13:31:51,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:31:51,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:31:51,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:31:51,941 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 13:31:51,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:31:51,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701464669] [2024-12-02 13:31:51,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701464669] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:31:51,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:31:51,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 13:31:51,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113521619] [2024-12-02 13:31:51,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:31:51,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:31:51,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:31:51,969 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:31:51,969 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:31:52,054 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 130 [2024-12-02 13:31:52,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 130 transitions, 280 flow. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 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 13:31:52,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:31:52,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 130 [2024-12-02 13:31:52,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:31:53,088 INFO L124 PetriNetUnfolderBase]: 2588/6143 cut-off events. [2024-12-02 13:31:53,089 INFO L125 PetriNetUnfolderBase]: For 143/143 co-relation queries the response was YES. [2024-12-02 13:31:53,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10362 conditions, 6143 events. 2588/6143 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 49911 event pairs, 2402 based on Foata normal form. 464/5654 useless extension candidates. Maximal degree in co-relation 9010. Up to 4126 conditions per place. [2024-12-02 13:31:53,118 INFO L140 encePairwiseOnDemand]: 113/130 looper letters, 50 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2024-12-02 13:31:53,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 114 transitions, 352 flow [2024-12-02 13:31:53,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:31:53,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 13:31:53,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 253 transitions. [2024-12-02 13:31:53,129 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6487179487179487 [2024-12-02 13:31:53,131 INFO L175 Difference]: Start difference. First operand has 116 places, 130 transitions, 280 flow. Second operand 3 states and 253 transitions. [2024-12-02 13:31:53,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 114 transitions, 352 flow [2024-12-02 13:31:53,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 114 transitions, 352 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 13:31:53,141 INFO L231 Difference]: Finished difference. Result has 115 places, 114 transitions, 252 flow [2024-12-02 13:31:53,143 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=115, PETRI_TRANSITIONS=114} [2024-12-02 13:31:53,146 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -1 predicate places. [2024-12-02 13:31:53,146 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 114 transitions, 252 flow [2024-12-02 13:31:53,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 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 13:31:53,146 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:31:53,146 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-12-02 13:31:53,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 13:31:53,147 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-02 13:31:53,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:31:53,147 INFO L85 PathProgramCache]: Analyzing trace with hash 22522, now seen corresponding path program 1 times [2024-12-02 13:31:53,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:31:53,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094043291] [2024-12-02 13:31:53,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:31:53,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:31:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:31:53,304 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 13:31:53,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:31:53,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094043291] [2024-12-02 13:31:53,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094043291] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:31:53,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:31:53,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 13:31:53,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133212431] [2024-12-02 13:31:53,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:31:53,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:31:53,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:31:53,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:31:53,307 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:31:53,377 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 130 [2024-12-02 13:31:53,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 114 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 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 13:31:53,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:31:53,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 130 [2024-12-02 13:31:53,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:31:53,884 INFO L124 PetriNetUnfolderBase]: 2588/6141 cut-off events. [2024-12-02 13:31:53,884 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2024-12-02 13:31:53,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10362 conditions, 6141 events. 2588/6141 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 49842 event pairs, 2402 based on Foata normal form. 2/5190 useless extension candidates. Maximal degree in co-relation 10350. Up to 4126 conditions per place. [2024-12-02 13:31:53,914 INFO L140 encePairwiseOnDemand]: 126/130 looper letters, 49 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2024-12-02 13:31:53,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 112 transitions, 350 flow [2024-12-02 13:31:53,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:31:53,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 13:31:53,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 242 transitions. [2024-12-02 13:31:53,916 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6205128205128205 [2024-12-02 13:31:53,916 INFO L175 Difference]: Start difference. First operand has 115 places, 114 transitions, 252 flow. Second operand 3 states and 242 transitions. [2024-12-02 13:31:53,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 112 transitions, 350 flow [2024-12-02 13:31:53,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 112 transitions, 346 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 13:31:53,921 INFO L231 Difference]: Finished difference. Result has 113 places, 112 transitions, 248 flow [2024-12-02 13:31:53,922 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=113, PETRI_TRANSITIONS=112} [2024-12-02 13:31:53,922 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -3 predicate places. [2024-12-02 13:31:53,922 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 112 transitions, 248 flow [2024-12-02 13:31:53,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 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 13:31:53,923 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:31:53,923 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-12-02 13:31:53,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 13:31:53,923 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-02 13:31:53,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:31:53,923 INFO L85 PathProgramCache]: Analyzing trace with hash 671582116, now seen corresponding path program 1 times [2024-12-02 13:31:53,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:31:53,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514516786] [2024-12-02 13:31:53,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:31:53,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:31:53,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:31:54,015 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 13:31:54,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:31:54,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514516786] [2024-12-02 13:31:54,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514516786] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:31:54,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:31:54,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 13:31:54,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387725461] [2024-12-02 13:31:54,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:31:54,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:31:54,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:31:54,016 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:31:54,017 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:31:54,071 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 130 [2024-12-02 13:31:54,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 112 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 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 13:31:54,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:31:54,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 130 [2024-12-02 13:31:54,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:31:54,670 INFO L124 PetriNetUnfolderBase]: 2956/6668 cut-off events. [2024-12-02 13:31:54,670 INFO L125 PetriNetUnfolderBase]: For 143/143 co-relation queries the response was YES. [2024-12-02 13:31:54,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11489 conditions, 6668 events. 2956/6668 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 54799 event pairs, 2046 based on Foata normal form. 0/5774 useless extension candidates. Maximal degree in co-relation 11477. Up to 3553 conditions per place. [2024-12-02 13:31:54,699 INFO L140 encePairwiseOnDemand]: 126/130 looper letters, 83 selfloop transitions, 2 changer transitions 0/142 dead transitions. [2024-12-02 13:31:54,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 142 transitions, 478 flow [2024-12-02 13:31:54,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:31:54,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 13:31:54,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 270 transitions. [2024-12-02 13:31:54,702 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6923076923076923 [2024-12-02 13:31:54,702 INFO L175 Difference]: Start difference. First operand has 113 places, 112 transitions, 248 flow. Second operand 3 states and 270 transitions. [2024-12-02 13:31:54,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 142 transitions, 478 flow [2024-12-02 13:31:54,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 142 transitions, 474 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 13:31:54,706 INFO L231 Difference]: Finished difference. Result has 111 places, 110 transitions, 244 flow [2024-12-02 13:31:54,706 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=111, PETRI_TRANSITIONS=110} [2024-12-02 13:31:54,707 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -5 predicate places. [2024-12-02 13:31:54,707 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 110 transitions, 244 flow [2024-12-02 13:31:54,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 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 13:31:54,707 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:31:54,707 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-12-02 13:31:54,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 13:31:54,708 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-02 13:31:54,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:31:54,708 INFO L85 PathProgramCache]: Analyzing trace with hash 671582117, now seen corresponding path program 1 times [2024-12-02 13:31:54,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:31:54,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798582196] [2024-12-02 13:31:54,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:31:54,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:31:54,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:31:54,856 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 13:31:54,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:31:54,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798582196] [2024-12-02 13:31:54,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798582196] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:31:54,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:31:54,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 13:31:54,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550216864] [2024-12-02 13:31:54,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:31:54,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:31:54,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:31:54,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:31:54,857 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:31:54,918 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 130 [2024-12-02 13:31:54,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 110 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 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 13:31:54,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:31:54,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 130 [2024-12-02 13:31:54,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:31:55,366 INFO L124 PetriNetUnfolderBase]: 2511/5835 cut-off events. [2024-12-02 13:31:55,366 INFO L125 PetriNetUnfolderBase]: For 360/365 co-relation queries the response was YES. [2024-12-02 13:31:55,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10122 conditions, 5835 events. 2511/5835 cut-off events. For 360/365 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 46693 event pairs, 2165 based on Foata normal form. 1/5018 useless extension candidates. Maximal degree in co-relation 9080. Up to 3977 conditions per place. [2024-12-02 13:31:55,389 INFO L140 encePairwiseOnDemand]: 125/130 looper letters, 52 selfloop transitions, 3 changer transitions 0/113 dead transitions. [2024-12-02 13:31:55,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 113 transitions, 360 flow [2024-12-02 13:31:55,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:31:55,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 13:31:55,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 249 transitions. [2024-12-02 13:31:55,391 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6384615384615384 [2024-12-02 13:31:55,391 INFO L175 Difference]: Start difference. First operand has 111 places, 110 transitions, 244 flow. Second operand 3 states and 249 transitions. [2024-12-02 13:31:55,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 113 transitions, 360 flow [2024-12-02 13:31:55,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 113 transitions, 356 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 13:31:55,397 INFO L231 Difference]: Finished difference. Result has 112 places, 112 transitions, 261 flow [2024-12-02 13:31:55,398 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=261, PETRI_PLACES=112, PETRI_TRANSITIONS=112} [2024-12-02 13:31:55,398 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -4 predicate places. [2024-12-02 13:31:55,399 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 112 transitions, 261 flow [2024-12-02 13:31:55,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 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 13:31:55,399 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:31:55,399 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:31:55,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 13:31:55,399 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-02 13:31:55,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:31:55,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1145972535, now seen corresponding path program 1 times [2024-12-02 13:31:55,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:31:55,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112143374] [2024-12-02 13:31:55,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:31:55,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:31:55,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:31:55,491 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 13:31:55,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:31:55,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112143374] [2024-12-02 13:31:55,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112143374] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:31:55,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:31:55,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 13:31:55,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129571451] [2024-12-02 13:31:55,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:31:55,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:31:55,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:31:55,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:31:55,493 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:31:55,542 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 130 [2024-12-02 13:31:55,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 112 transitions, 261 flow. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 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 13:31:55,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:31:55,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 130 [2024-12-02 13:31:55,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:31:56,178 INFO L124 PetriNetUnfolderBase]: 3184/7341 cut-off events. [2024-12-02 13:31:56,179 INFO L125 PetriNetUnfolderBase]: For 382/387 co-relation queries the response was YES. [2024-12-02 13:31:56,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12696 conditions, 7341 events. 3184/7341 cut-off events. For 382/387 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 60090 event pairs, 2356 based on Foata normal form. 0/6287 useless extension candidates. Maximal degree in co-relation 11681. Up to 3955 conditions per place. [2024-12-02 13:31:56,220 INFO L140 encePairwiseOnDemand]: 124/130 looper letters, 93 selfloop transitions, 5 changer transitions 0/154 dead transitions. [2024-12-02 13:31:56,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 154 transitions, 554 flow [2024-12-02 13:31:56,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:31:56,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 13:31:56,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 284 transitions. [2024-12-02 13:31:56,222 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7282051282051282 [2024-12-02 13:31:56,222 INFO L175 Difference]: Start difference. First operand has 112 places, 112 transitions, 261 flow. Second operand 3 states and 284 transitions. [2024-12-02 13:31:56,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 154 transitions, 554 flow [2024-12-02 13:31:56,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 154 transitions, 551 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 13:31:56,226 INFO L231 Difference]: Finished difference. Result has 115 places, 115 transitions, 294 flow [2024-12-02 13:31:56,227 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=294, PETRI_PLACES=115, PETRI_TRANSITIONS=115} [2024-12-02 13:31:56,227 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -1 predicate places. [2024-12-02 13:31:56,228 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 115 transitions, 294 flow [2024-12-02 13:31:56,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 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 13:31:56,228 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:31:56,228 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:31:56,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 13:31:56,228 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-02 13:31:56,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:31:56,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1145972536, now seen corresponding path program 1 times [2024-12-02 13:31:56,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:31:56,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105793290] [2024-12-02 13:31:56,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:31:56,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:31:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:31:56,381 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 13:31:56,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:31:56,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105793290] [2024-12-02 13:31:56,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105793290] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:31:56,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:31:56,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 13:31:56,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453301425] [2024-12-02 13:31:56,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:31:56,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:31:56,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:31:56,382 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:31:56,383 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:31:56,434 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 130 [2024-12-02 13:31:56,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 115 transitions, 294 flow. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 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 13:31:56,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:31:56,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 130 [2024-12-02 13:31:56,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:31:57,158 INFO L124 PetriNetUnfolderBase]: 3913/8837 cut-off events. [2024-12-02 13:31:57,158 INFO L125 PetriNetUnfolderBase]: For 3170/3505 co-relation queries the response was YES. [2024-12-02 13:31:57,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17302 conditions, 8837 events. 3913/8837 cut-off events. For 3170/3505 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 75232 event pairs, 2798 based on Foata normal form. 542/8259 useless extension candidates. Maximal degree in co-relation 16256. Up to 5385 conditions per place. [2024-12-02 13:31:57,195 INFO L140 encePairwiseOnDemand]: 125/130 looper letters, 94 selfloop transitions, 5 changer transitions 0/157 dead transitions. [2024-12-02 13:31:57,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 157 transitions, 599 flow [2024-12-02 13:31:57,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:31:57,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 13:31:57,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 285 transitions. [2024-12-02 13:31:57,196 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7307692307692307 [2024-12-02 13:31:57,197 INFO L175 Difference]: Start difference. First operand has 115 places, 115 transitions, 294 flow. Second operand 3 states and 285 transitions. [2024-12-02 13:31:57,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 157 transitions, 599 flow [2024-12-02 13:31:57,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 157 transitions, 585 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 13:31:57,204 INFO L231 Difference]: Finished difference. Result has 116 places, 118 transitions, 321 flow [2024-12-02 13:31:57,204 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=321, PETRI_PLACES=116, PETRI_TRANSITIONS=118} [2024-12-02 13:31:57,204 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, 0 predicate places. [2024-12-02 13:31:57,205 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 118 transitions, 321 flow [2024-12-02 13:31:57,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 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 13:31:57,205 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:31:57,205 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:31:57,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 13:31:57,205 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-02 13:31:57,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:31:57,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1165292735, now seen corresponding path program 1 times [2024-12-02 13:31:57,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:31:57,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537902989] [2024-12-02 13:31:57,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:31:57,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:31:57,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:31:57,381 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 13:31:57,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:31:57,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537902989] [2024-12-02 13:31:57,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537902989] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:31:57,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:31:57,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 13:31:57,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28870417] [2024-12-02 13:31:57,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:31:57,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:31:57,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:31:57,382 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:31:57,382 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:31:57,530 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 130 [2024-12-02 13:31:57,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 118 transitions, 321 flow. Second operand has 5 states, 5 states have (on average 64.6) internal successors, (323), 5 states have internal predecessors, (323), 0 states have call successors, (0), 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 13:31:57,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:31:57,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 130 [2024-12-02 13:31:57,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:31:58,049 INFO L124 PetriNetUnfolderBase]: 2268/5316 cut-off events. [2024-12-02 13:31:58,049 INFO L125 PetriNetUnfolderBase]: For 2128/3356 co-relation queries the response was YES. [2024-12-02 13:31:58,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9790 conditions, 5316 events. 2268/5316 cut-off events. For 2128/3356 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 42492 event pairs, 1996 based on Foata normal form. 53/4611 useless extension candidates. Maximal degree in co-relation 9539. Up to 3606 conditions per place. [2024-12-02 13:31:58,069 INFO L140 encePairwiseOnDemand]: 125/130 looper letters, 59 selfloop transitions, 4 changer transitions 0/121 dead transitions. [2024-12-02 13:31:58,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 121 transitions, 448 flow [2024-12-02 13:31:58,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 13:31:58,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 13:31:58,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 313 transitions. [2024-12-02 13:31:58,071 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6019230769230769 [2024-12-02 13:31:58,071 INFO L175 Difference]: Start difference. First operand has 116 places, 118 transitions, 321 flow. Second operand 4 states and 313 transitions. [2024-12-02 13:31:58,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 121 transitions, 448 flow [2024-12-02 13:31:58,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 121 transitions, 444 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 13:31:58,076 INFO L231 Difference]: Finished difference. Result has 119 places, 117 transitions, 324 flow [2024-12-02 13:31:58,076 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=324, PETRI_PLACES=119, PETRI_TRANSITIONS=117} [2024-12-02 13:31:58,076 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, 3 predicate places. [2024-12-02 13:31:58,076 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 117 transitions, 324 flow [2024-12-02 13:31:58,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.6) internal successors, (323), 5 states have internal predecessors, (323), 0 states have call successors, (0), 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 13:31:58,077 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:31:58,077 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:31:58,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 13:31:58,077 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-02 13:31:58,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:31:58,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1764341602, now seen corresponding path program 1 times [2024-12-02 13:31:58,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:31:58,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435320139] [2024-12-02 13:31:58,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:31:58,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:31:58,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:31:58,353 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 13:31:58,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:31:58,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435320139] [2024-12-02 13:31:58,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435320139] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:31:58,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:31:58,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:31:58,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795040920] [2024-12-02 13:31:58,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:31:58,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 13:31:58,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:31:58,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 13:31:58,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 13:31:58,659 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 130 [2024-12-02 13:31:58,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 117 transitions, 324 flow. Second operand has 6 states, 6 states have (on average 61.5) internal successors, (369), 6 states have internal predecessors, (369), 0 states have call successors, (0), 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 13:31:58,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:31:58,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 130 [2024-12-02 13:31:58,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:31:59,115 INFO L124 PetriNetUnfolderBase]: 2587/5956 cut-off events. [2024-12-02 13:31:59,115 INFO L125 PetriNetUnfolderBase]: For 2337/3702 co-relation queries the response was YES. [2024-12-02 13:31:59,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10979 conditions, 5956 events. 2587/5956 cut-off events. For 2337/3702 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 48488 event pairs, 2313 based on Foata normal form. 58/5233 useless extension candidates. Maximal degree in co-relation 10820. Up to 4059 conditions per place. [2024-12-02 13:31:59,132 INFO L140 encePairwiseOnDemand]: 126/130 looper letters, 65 selfloop transitions, 5 changer transitions 0/127 dead transitions. [2024-12-02 13:31:59,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 127 transitions, 484 flow [2024-12-02 13:31:59,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 13:31:59,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 13:31:59,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 307 transitions. [2024-12-02 13:31:59,133 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5903846153846154 [2024-12-02 13:31:59,133 INFO L175 Difference]: Start difference. First operand has 119 places, 117 transitions, 324 flow. Second operand 4 states and 307 transitions. [2024-12-02 13:31:59,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 127 transitions, 484 flow [2024-12-02 13:31:59,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 127 transitions, 476 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-12-02 13:31:59,137 INFO L231 Difference]: Finished difference. Result has 119 places, 116 transitions, 320 flow [2024-12-02 13:31:59,138 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=320, PETRI_PLACES=119, PETRI_TRANSITIONS=116} [2024-12-02 13:31:59,138 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, 3 predicate places. [2024-12-02 13:31:59,138 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 116 transitions, 320 flow [2024-12-02 13:31:59,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 61.5) internal successors, (369), 6 states have internal predecessors, (369), 0 states have call successors, (0), 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 13:31:59,139 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:31:59,139 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-12-02 13:31:59,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 13:31:59,139 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-02 13:31:59,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:31:59,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1764337210, now seen corresponding path program 1 times [2024-12-02 13:31:59,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:31:59,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902471730] [2024-12-02 13:31:59,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:31:59,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:31:59,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 13:31:59,177 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 13:31:59,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 13:31:59,215 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 13:31:59,215 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 13:31:59,216 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (64 of 65 remaining) [2024-12-02 13:31:59,217 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 65 remaining) [2024-12-02 13:31:59,217 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 65 remaining) [2024-12-02 13:31:59,218 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 65 remaining) [2024-12-02 13:31:59,218 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 65 remaining) [2024-12-02 13:31:59,218 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 65 remaining) [2024-12-02 13:31:59,218 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 65 remaining) [2024-12-02 13:31:59,218 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 65 remaining) [2024-12-02 13:31:59,218 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 65 remaining) [2024-12-02 13:31:59,218 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 65 remaining) [2024-12-02 13:31:59,218 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 65 remaining) [2024-12-02 13:31:59,218 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 65 remaining) [2024-12-02 13:31:59,218 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 65 remaining) [2024-12-02 13:31:59,218 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 65 remaining) [2024-12-02 13:31:59,218 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 65 remaining) [2024-12-02 13:31:59,218 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr14ASSERT_VIOLATIONMEMORY_LEAK (49 of 65 remaining) [2024-12-02 13:31:59,218 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 65 remaining) [2024-12-02 13:31:59,218 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 65 remaining) [2024-12-02 13:31:59,218 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 65 remaining) [2024-12-02 13:31:59,219 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 65 remaining) [2024-12-02 13:31:59,219 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 65 remaining) [2024-12-02 13:31:59,219 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 65 remaining) [2024-12-02 13:31:59,219 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 65 remaining) [2024-12-02 13:31:59,219 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 65 remaining) [2024-12-02 13:31:59,219 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 65 remaining) [2024-12-02 13:31:59,219 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 65 remaining) [2024-12-02 13:31:59,219 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 65 remaining) [2024-12-02 13:31:59,219 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 65 remaining) [2024-12-02 13:31:59,219 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (36 of 65 remaining) [2024-12-02 13:31:59,219 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 65 remaining) [2024-12-02 13:31:59,219 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 65 remaining) [2024-12-02 13:31:59,219 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 65 remaining) [2024-12-02 13:31:59,219 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 65 remaining) [2024-12-02 13:31:59,219 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 65 remaining) [2024-12-02 13:31:59,219 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 65 remaining) [2024-12-02 13:31:59,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 65 remaining) [2024-12-02 13:31:59,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 65 remaining) [2024-12-02 13:31:59,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 65 remaining) [2024-12-02 13:31:59,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 65 remaining) [2024-12-02 13:31:59,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 65 remaining) [2024-12-02 13:31:59,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 65 remaining) [2024-12-02 13:31:59,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 65 remaining) [2024-12-02 13:31:59,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 65 remaining) [2024-12-02 13:31:59,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 65 remaining) [2024-12-02 13:31:59,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 65 remaining) [2024-12-02 13:31:59,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 65 remaining) [2024-12-02 13:31:59,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 65 remaining) [2024-12-02 13:31:59,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 65 remaining) [2024-12-02 13:31:59,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 65 remaining) [2024-12-02 13:31:59,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 65 remaining) [2024-12-02 13:31:59,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 65 remaining) [2024-12-02 13:31:59,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 65 remaining) [2024-12-02 13:31:59,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 65 remaining) [2024-12-02 13:31:59,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 65 remaining) [2024-12-02 13:31:59,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr14ASSERT_VIOLATIONMEMORY_LEAK (10 of 65 remaining) [2024-12-02 13:31:59,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 65 remaining) [2024-12-02 13:31:59,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 65 remaining) [2024-12-02 13:31:59,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 65 remaining) [2024-12-02 13:31:59,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 65 remaining) [2024-12-02 13:31:59,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 65 remaining) [2024-12-02 13:31:59,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 65 remaining) [2024-12-02 13:31:59,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 65 remaining) [2024-12-02 13:31:59,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 65 remaining) [2024-12-02 13:31:59,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 65 remaining) [2024-12-02 13:31:59,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 65 remaining) [2024-12-02 13:31:59,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 13:31:59,223 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:31:59,226 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 13:31:59,226 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-12-02 13:31:59,296 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2024-12-02 13:31:59,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 196 places, 225 transitions, 494 flow [2024-12-02 13:31:59,399 INFO L124 PetriNetUnfolderBase]: 147/827 cut-off events. [2024-12-02 13:31:59,400 INFO L125 PetriNetUnfolderBase]: For 72/85 co-relation queries the response was YES. [2024-12-02 13:31:59,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 916 conditions, 827 events. 147/827 cut-off events. For 72/85 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 5983 event pairs, 2 based on Foata normal form. 0/468 useless extension candidates. Maximal degree in co-relation 525. Up to 32 conditions per place. [2024-12-02 13:31:59,410 INFO L82 GeneralOperation]: Start removeDead. Operand has 196 places, 225 transitions, 494 flow [2024-12-02 13:31:59,420 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 196 places, 225 transitions, 494 flow [2024-12-02 13:31:59,421 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 13:31:59,422 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;@7a863977, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 13:31:59,422 INFO L334 AbstractCegarLoop]: Starting to check reachability of 90 error locations. [2024-12-02 13:31:59,424 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 13:31:59,424 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2024-12-02 13:31:59,424 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 13:31:59,424 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:31:59,424 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-12-02 13:31:59,424 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 87 more)] === [2024-12-02 13:31:59,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:31:59,424 INFO L85 PathProgramCache]: Analyzing trace with hash 29657, now seen corresponding path program 1 times [2024-12-02 13:31:59,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:31:59,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926499962] [2024-12-02 13:31:59,425 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:31:59,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:31:59,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:31:59,483 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 13:31:59,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:31:59,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926499962] [2024-12-02 13:31:59,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926499962] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:31:59,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:31:59,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 13:31:59,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741142895] [2024-12-02 13:31:59,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:31:59,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:31:59,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:31:59,484 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:31:59,484 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:31:59,565 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 225 [2024-12-02 13:31:59,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 225 transitions, 494 flow. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 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 13:31:59,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:31:59,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 225 [2024-12-02 13:31:59,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand