./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1204b3ee-6110-4a1c-b086-a80f23b468ac/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1204b3ee-6110-4a1c-b086-a80f23b468ac/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1204b3ee-6110-4a1c-b086-a80f23b468ac/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1204b3ee-6110-4a1c-b086-a80f23b468ac/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1204b3ee-6110-4a1c-b086-a80f23b468ac/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1204b3ee-6110-4a1c-b086-a80f23b468ac/bin/uautomizer-verify-4GaUIPS5ZU --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 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:15:56,671 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:15:56,778 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1204b3ee-6110-4a1c-b086-a80f23b468ac/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-31 22:15:56,784 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:15:56,784 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:15:56,824 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:15:56,826 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:15:56,827 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:15:56,828 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:15:56,829 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:15:56,830 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:15:56,830 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:15:56,831 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:15:56,831 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:15:56,833 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:15:56,834 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:15:56,834 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:15:56,835 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:15:56,835 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:15:56,835 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:15:56,835 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-31 22:15:56,836 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-31 22:15:56,836 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-31 22:15:56,837 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:15:56,837 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 22:15:56,837 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:15:56,837 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:15:56,838 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:15:56,838 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:15:56,838 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:15:56,839 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:15:56,839 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:15:56,839 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:15:56,844 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:15:56,844 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:15:56,844 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:15:56,845 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:15:56,845 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:15:56,845 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:15:56,845 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:15:56,845 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:15:56,847 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:15:56,847 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1204b3ee-6110-4a1c-b086-a80f23b468ac/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1204b3ee-6110-4a1c-b086-a80f23b468ac/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 [2024-10-31 22:15:57,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:15:57,168 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:15:57,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:15:57,173 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:15:57,173 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:15:57,174 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1204b3ee-6110-4a1c-b086-a80f23b468ac/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i Unable to find full path for "g++" [2024-10-31 22:15:59,142 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:15:59,457 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:15:59,457 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1204b3ee-6110-4a1c-b086-a80f23b468ac/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2024-10-31 22:15:59,478 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1204b3ee-6110-4a1c-b086-a80f23b468ac/bin/uautomizer-verify-4GaUIPS5ZU/data/7d79d7e88/8dea1e61f8ea4e58bc4c26bb61547574/FLAGb77a6a720 [2024-10-31 22:15:59,749 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1204b3ee-6110-4a1c-b086-a80f23b468ac/bin/uautomizer-verify-4GaUIPS5ZU/data/7d79d7e88/8dea1e61f8ea4e58bc4c26bb61547574 [2024-10-31 22:15:59,752 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:15:59,754 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:15:59,755 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:15:59,755 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:15:59,761 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:15:59,762 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:15:59" (1/1) ... [2024-10-31 22:15:59,763 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19b26efd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:59, skipping insertion in model container [2024-10-31 22:15:59,764 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:15:59" (1/1) ... [2024-10-31 22:15:59,824 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:16:00,272 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:16:00,294 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:16:00,367 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:16:00,442 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:16:00,443 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:00 WrapperNode [2024-10-31 22:16:00,443 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:16:00,444 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:16:00,444 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:16:00,445 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:16:00,452 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:00" (1/1) ... [2024-10-31 22:16:00,467 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:00" (1/1) ... [2024-10-31 22:16:00,497 INFO L138 Inliner]: procedures = 165, calls = 35, calls flagged for inlining = 8, calls inlined = 9, statements flattened = 123 [2024-10-31 22:16:00,497 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:16:00,498 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:16:00,498 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:16:00,498 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:16:00,514 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:00" (1/1) ... [2024-10-31 22:16:00,515 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:00" (1/1) ... [2024-10-31 22:16:00,517 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:00" (1/1) ... [2024-10-31 22:16:00,543 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6]. The 3 writes are split as follows [0, 3]. [2024-10-31 22:16:00,543 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:00" (1/1) ... [2024-10-31 22:16:00,543 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:00" (1/1) ... [2024-10-31 22:16:00,555 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:00" (1/1) ... [2024-10-31 22:16:00,558 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:00" (1/1) ... [2024-10-31 22:16:00,560 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:00" (1/1) ... [2024-10-31 22:16:00,562 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:00" (1/1) ... [2024-10-31 22:16:00,568 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:16:00,569 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:16:00,569 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:16:00,569 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:16:00,570 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:00" (1/1) ... [2024-10-31 22:16:00,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:16:00,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1204b3ee-6110-4a1c-b086-a80f23b468ac/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:16:00,607 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1204b3ee-6110-4a1c-b086-a80f23b468ac/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:16:00,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1204b3ee-6110-4a1c-b086-a80f23b468ac/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:16:00,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:16:00,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:16:00,642 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2024-10-31 22:16:00,642 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2024-10-31 22:16:00,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:16:00,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:16:00,644 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-31 22:16:00,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:16:00,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:16:00,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:16:00,644 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-31 22:16:00,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:16:00,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:16:00,646 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:16:00,834 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:16:00,836 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:16:01,333 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:16:01,333 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:16:01,651 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:16:01,653 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-31 22:16:01,653 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:16:01 BoogieIcfgContainer [2024-10-31 22:16:01,653 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:16:01,660 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:16:01,660 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:16:01,664 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:16:01,664 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:15:59" (1/3) ... [2024-10-31 22:16:01,665 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ecb355c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:16:01, skipping insertion in model container [2024-10-31 22:16:01,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:00" (2/3) ... [2024-10-31 22:16:01,668 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ecb355c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:16:01, skipping insertion in model container [2024-10-31 22:16:01,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:16:01" (3/3) ... [2024-10-31 22:16:01,669 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2024-10-31 22:16:01,691 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:16:01,692 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2024-10-31 22:16:01,692 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:16:01,765 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:16:01,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 75 transitions, 154 flow [2024-10-31 22:16:01,905 INFO L124 PetriNetUnfolderBase]: 10/74 cut-off events. [2024-10-31 22:16:01,905 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:16:01,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 74 events. 10/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 218 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2024-10-31 22:16:01,909 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 75 transitions, 154 flow [2024-10-31 22:16:01,914 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 74 transitions, 151 flow [2024-10-31 22:16:01,925 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:16:01,933 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;@59311cf5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:16:01,934 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-10-31 22:16:01,939 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:16:01,941 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-10-31 22:16:01,941 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:16:01,941 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:16:01,942 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-10-31 22:16:01,942 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-10-31 22:16:01,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:01,950 INFO L85 PathProgramCache]: Analyzing trace with hash 13222, now seen corresponding path program 1 times [2024-10-31 22:16:01,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:01,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000235385] [2024-10-31 22:16:01,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:01,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:02,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:02,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:16:02,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:02,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000235385] [2024-10-31 22:16:02,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000235385] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:02,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:02,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:16:02,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247148120] [2024-10-31 22:16:02,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:02,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:16:02,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:02,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:16:02,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:16:02,519 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 75 [2024-10-31 22:16:02,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 74 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2024-10-31 22:16:02,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:16:02,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 75 [2024-10-31 22:16:02,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:16:02,917 INFO L124 PetriNetUnfolderBase]: 212/615 cut-off events. [2024-10-31 22:16:02,918 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:16:02,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 988 conditions, 615 events. 212/615 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3842 event pairs, 147 based on Foata normal form. 54/503 useless extension candidates. Maximal degree in co-relation 976. Up to 368 conditions per place. [2024-10-31 22:16:02,927 INFO L140 encePairwiseOnDemand]: 66/75 looper letters, 28 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2024-10-31 22:16:02,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 65 transitions, 193 flow [2024-10-31 22:16:02,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:16:02,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:16:02,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2024-10-31 22:16:02,946 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2024-10-31 22:16:02,948 INFO L175 Difference]: Start difference. First operand has 68 places, 74 transitions, 151 flow. Second operand 3 states and 145 transitions. [2024-10-31 22:16:02,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 65 transitions, 193 flow [2024-10-31 22:16:02,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 65 transitions, 192 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:16:02,962 INFO L231 Difference]: Finished difference. Result has 65 places, 65 transitions, 136 flow [2024-10-31 22:16:02,965 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=65, PETRI_TRANSITIONS=65} [2024-10-31 22:16:02,972 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -3 predicate places. [2024-10-31 22:16:02,972 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 65 transitions, 136 flow [2024-10-31 22:16:02,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2024-10-31 22:16:02,974 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:16:02,975 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-10-31 22:16:02,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:16:02,975 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-10-31 22:16:02,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:02,977 INFO L85 PathProgramCache]: Analyzing trace with hash 13223, now seen corresponding path program 1 times [2024-10-31 22:16:02,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:02,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948878443] [2024-10-31 22:16:02,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:02,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:03,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:03,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:16:03,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:03,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948878443] [2024-10-31 22:16:03,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948878443] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:03,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:03,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:16:03,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863456693] [2024-10-31 22:16:03,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:03,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:16:03,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:03,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:16:03,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:16:03,217 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 75 [2024-10-31 22:16:03,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 65 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2024-10-31 22:16:03,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:16:03,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 75 [2024-10-31 22:16:03,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:16:03,446 INFO L124 PetriNetUnfolderBase]: 212/614 cut-off events. [2024-10-31 22:16:03,446 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:16:03,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 989 conditions, 614 events. 212/614 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3836 event pairs, 147 based on Foata normal form. 1/449 useless extension candidates. Maximal degree in co-relation 980. Up to 368 conditions per place. [2024-10-31 22:16:03,452 INFO L140 encePairwiseOnDemand]: 72/75 looper letters, 28 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2024-10-31 22:16:03,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 64 transitions, 194 flow [2024-10-31 22:16:03,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:16:03,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:16:03,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 139 transitions. [2024-10-31 22:16:03,457 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6177777777777778 [2024-10-31 22:16:03,458 INFO L175 Difference]: Start difference. First operand has 65 places, 65 transitions, 136 flow. Second operand 3 states and 139 transitions. [2024-10-31 22:16:03,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 64 transitions, 194 flow [2024-10-31 22:16:03,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 64 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:16:03,461 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 134 flow [2024-10-31 22:16:03,462 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2024-10-31 22:16:03,463 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -4 predicate places. [2024-10-31 22:16:03,463 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 134 flow [2024-10-31 22:16:03,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2024-10-31 22:16:03,464 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:16:03,464 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-31 22:16:03,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:16:03,465 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-10-31 22:16:03,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:03,466 INFO L85 PathProgramCache]: Analyzing trace with hash -658033413, now seen corresponding path program 1 times [2024-10-31 22:16:03,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:03,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603273210] [2024-10-31 22:16:03,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:03,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:03,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:03,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:16:03,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:03,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603273210] [2024-10-31 22:16:03,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603273210] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:03,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:03,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:16:03,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058742295] [2024-10-31 22:16:03,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:03,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:16:03,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:03,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:16:03,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:16:03,602 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 75 [2024-10-31 22:16:03,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2024-10-31 22:16:03,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:16:03,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 75 [2024-10-31 22:16:03,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:16:03,739 INFO L124 PetriNetUnfolderBase]: 212/612 cut-off events. [2024-10-31 22:16:03,739 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:16:03,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 987 conditions, 612 events. 212/612 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3811 event pairs, 147 based on Foata normal form. 0/446 useless extension candidates. Maximal degree in co-relation 978. Up to 368 conditions per place. [2024-10-31 22:16:03,746 INFO L140 encePairwiseOnDemand]: 73/75 looper letters, 29 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2024-10-31 22:16:03,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 63 transitions, 192 flow [2024-10-31 22:16:03,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:16:03,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:16:03,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 139 transitions. [2024-10-31 22:16:03,749 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6177777777777778 [2024-10-31 22:16:03,750 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 134 flow. Second operand 3 states and 139 transitions. [2024-10-31 22:16:03,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 63 transitions, 192 flow [2024-10-31 22:16:03,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 63 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:16:03,753 INFO L231 Difference]: Finished difference. Result has 63 places, 63 transitions, 130 flow [2024-10-31 22:16:03,754 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=63, PETRI_TRANSITIONS=63} [2024-10-31 22:16:03,755 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -5 predicate places. [2024-10-31 22:16:03,756 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 63 transitions, 130 flow [2024-10-31 22:16:03,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2024-10-31 22:16:03,757 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:16:03,757 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:03,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:16:03,757 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-10-31 22:16:03,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:03,759 INFO L85 PathProgramCache]: Analyzing trace with hash -943636261, now seen corresponding path program 1 times [2024-10-31 22:16:03,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:03,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352332934] [2024-10-31 22:16:03,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:03,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:03,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:04,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:16:04,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:04,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352332934] [2024-10-31 22:16:04,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352332934] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:04,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:04,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:16:04,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848076725] [2024-10-31 22:16:04,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:04,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:16:04,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:04,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:16:04,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:16:04,159 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 75 [2024-10-31 22:16:04,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 63 transitions, 130 flow. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 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) [2024-10-31 22:16:04,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:16:04,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 75 [2024-10-31 22:16:04,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:16:04,427 INFO L124 PetriNetUnfolderBase]: 212/560 cut-off events. [2024-10-31 22:16:04,427 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:16:04,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 957 conditions, 560 events. 212/560 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3172 event pairs, 8 based on Foata normal form. 0/492 useless extension candidates. Maximal degree in co-relation 951. Up to 359 conditions per place. [2024-10-31 22:16:04,431 INFO L140 encePairwiseOnDemand]: 65/75 looper letters, 38 selfloop transitions, 4 changer transitions 0/67 dead transitions. [2024-10-31 22:16:04,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 67 transitions, 222 flow [2024-10-31 22:16:04,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:16:04,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:16:04,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 193 transitions. [2024-10-31 22:16:04,434 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5146666666666667 [2024-10-31 22:16:04,434 INFO L175 Difference]: Start difference. First operand has 63 places, 63 transitions, 130 flow. Second operand 5 states and 193 transitions. [2024-10-31 22:16:04,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 67 transitions, 222 flow [2024-10-31 22:16:04,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 67 transitions, 221 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:16:04,436 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 125 flow [2024-10-31 22:16:04,437 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=125, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2024-10-31 22:16:04,438 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -8 predicate places. [2024-10-31 22:16:04,438 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 125 flow [2024-10-31 22:16:04,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 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) [2024-10-31 22:16:04,438 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:16:04,439 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:04,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:16:04,439 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-10-31 22:16:04,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:04,440 INFO L85 PathProgramCache]: Analyzing trace with hash -943636262, now seen corresponding path program 1 times [2024-10-31 22:16:04,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:04,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252608393] [2024-10-31 22:16:04,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:04,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:04,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:04,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:16:04,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:04,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252608393] [2024-10-31 22:16:04,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252608393] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:04,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:04,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:16:04,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882311447] [2024-10-31 22:16:04,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:04,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:16:04,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:04,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:16:04,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:16:04,711 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 75 [2024-10-31 22:16:04,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 125 flow. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 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) [2024-10-31 22:16:04,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:16:04,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 75 [2024-10-31 22:16:04,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:16:04,924 INFO L124 PetriNetUnfolderBase]: 223/519 cut-off events. [2024-10-31 22:16:04,924 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-10-31 22:16:04,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 950 conditions, 519 events. 223/519 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2622 event pairs, 68 based on Foata normal form. 0/431 useless extension candidates. Maximal degree in co-relation 943. Up to 362 conditions per place. [2024-10-31 22:16:04,931 INFO L140 encePairwiseOnDemand]: 65/75 looper letters, 38 selfloop transitions, 4 changer transitions 0/61 dead transitions. [2024-10-31 22:16:04,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 61 transitions, 217 flow [2024-10-31 22:16:04,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:16:04,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:16:04,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 193 transitions. [2024-10-31 22:16:04,934 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5146666666666667 [2024-10-31 22:16:04,934 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 125 flow. Second operand 5 states and 193 transitions. [2024-10-31 22:16:04,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 61 transitions, 217 flow [2024-10-31 22:16:04,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 61 transitions, 209 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-31 22:16:04,937 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 113 flow [2024-10-31 22:16:04,938 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=113, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2024-10-31 22:16:04,939 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -14 predicate places. [2024-10-31 22:16:04,939 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 113 flow [2024-10-31 22:16:04,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 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) [2024-10-31 22:16:04,940 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:16:04,940 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:04,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:16:04,941 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-10-31 22:16:04,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:04,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1009954102, now seen corresponding path program 1 times [2024-10-31 22:16:04,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:04,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542158861] [2024-10-31 22:16:04,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:04,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:04,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:05,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:16:05,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:05,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542158861] [2024-10-31 22:16:05,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542158861] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:05,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:05,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:16:05,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519878603] [2024-10-31 22:16:05,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:05,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:16:05,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:05,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:16:05,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:16:05,135 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 75 [2024-10-31 22:16:05,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 113 flow. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 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) [2024-10-31 22:16:05,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:16:05,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 75 [2024-10-31 22:16:05,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:16:05,384 INFO L124 PetriNetUnfolderBase]: 235/546 cut-off events. [2024-10-31 22:16:05,384 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-10-31 22:16:05,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1013 conditions, 546 events. 235/546 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2907 event pairs, 53 based on Foata normal form. 0/479 useless extension candidates. Maximal degree in co-relation 1006. Up to 283 conditions per place. [2024-10-31 22:16:05,387 INFO L140 encePairwiseOnDemand]: 68/75 looper letters, 45 selfloop transitions, 4 changer transitions 0/65 dead transitions. [2024-10-31 22:16:05,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 65 transitions, 243 flow [2024-10-31 22:16:05,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:16:05,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:16:05,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 212 transitions. [2024-10-31 22:16:05,389 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5653333333333334 [2024-10-31 22:16:05,389 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 113 flow. Second operand 5 states and 212 transitions. [2024-10-31 22:16:05,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 65 transitions, 243 flow [2024-10-31 22:16:05,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 65 transitions, 231 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-31 22:16:05,392 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 107 flow [2024-10-31 22:16:05,392 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=107, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2024-10-31 22:16:05,393 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -17 predicate places. [2024-10-31 22:16:05,393 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 107 flow [2024-10-31 22:16:05,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 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) [2024-10-31 22:16:05,393 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:16:05,393 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:05,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:16:05,394 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-10-31 22:16:05,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:05,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1009954101, now seen corresponding path program 1 times [2024-10-31 22:16:05,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:05,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835462857] [2024-10-31 22:16:05,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:05,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:05,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:16:05,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:05,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835462857] [2024-10-31 22:16:05,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835462857] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:05,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:05,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:16:05,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894285483] [2024-10-31 22:16:05,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:05,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:16:05,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:05,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:16:05,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:16:05,694 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 75 [2024-10-31 22:16:05,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 107 flow. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 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) [2024-10-31 22:16:05,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:16:05,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 75 [2024-10-31 22:16:05,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:16:05,940 INFO L124 PetriNetUnfolderBase]: 235/495 cut-off events. [2024-10-31 22:16:05,940 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-31 22:16:05,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 965 conditions, 495 events. 235/495 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2428 event pairs, 53 based on Foata normal form. 0/445 useless extension candidates. Maximal degree in co-relation 958. Up to 283 conditions per place. [2024-10-31 22:16:05,944 INFO L140 encePairwiseOnDemand]: 68/75 looper letters, 45 selfloop transitions, 4 changer transitions 0/62 dead transitions. [2024-10-31 22:16:05,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 62 transitions, 233 flow [2024-10-31 22:16:05,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:16:05,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:16:05,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 212 transitions. [2024-10-31 22:16:05,946 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5653333333333334 [2024-10-31 22:16:05,946 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 107 flow. Second operand 5 states and 212 transitions. [2024-10-31 22:16:05,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 62 transitions, 233 flow [2024-10-31 22:16:05,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 62 transitions, 225 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-31 22:16:05,949 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 101 flow [2024-10-31 22:16:05,949 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=101, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2024-10-31 22:16:05,950 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -20 predicate places. [2024-10-31 22:16:05,950 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 101 flow [2024-10-31 22:16:05,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 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) [2024-10-31 22:16:05,951 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:16:05,951 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:05,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:16:05,951 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting workerErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-10-31 22:16:05,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:05,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1451164867, now seen corresponding path program 1 times [2024-10-31 22:16:05,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:05,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428731279] [2024-10-31 22:16:05,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:05,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:06,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:16:06,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:06,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428731279] [2024-10-31 22:16:06,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428731279] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:06,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:06,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:16:06,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306131017] [2024-10-31 22:16:06,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:06,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:16:06,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:06,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:16:06,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:16:06,271 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 75 [2024-10-31 22:16:06,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 101 flow. Second operand has 6 states, 6 states have (on average 36.5) internal successors, (219), 6 states have internal predecessors, (219), 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) [2024-10-31 22:16:06,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:16:06,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 75 [2024-10-31 22:16:06,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:16:06,591 INFO L124 PetriNetUnfolderBase]: 296/648 cut-off events. [2024-10-31 22:16:06,591 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2024-10-31 22:16:06,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1249 conditions, 648 events. 296/648 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2931 event pairs, 104 based on Foata normal form. 0/601 useless extension candidates. Maximal degree in co-relation 1242. Up to 386 conditions per place. [2024-10-31 22:16:06,595 INFO L140 encePairwiseOnDemand]: 68/75 looper letters, 73 selfloop transitions, 9 changer transitions 0/95 dead transitions. [2024-10-31 22:16:06,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 95 transitions, 381 flow [2024-10-31 22:16:06,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:16:06,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 22:16:06,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 329 transitions. [2024-10-31 22:16:06,597 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6266666666666667 [2024-10-31 22:16:06,598 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 101 flow. Second operand 7 states and 329 transitions. [2024-10-31 22:16:06,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 95 transitions, 381 flow [2024-10-31 22:16:06,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 95 transitions, 357 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-31 22:16:06,604 INFO L231 Difference]: Finished difference. Result has 54 places, 53 transitions, 153 flow [2024-10-31 22:16:06,605 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=153, PETRI_PLACES=54, PETRI_TRANSITIONS=53} [2024-10-31 22:16:06,607 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -14 predicate places. [2024-10-31 22:16:06,608 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 53 transitions, 153 flow [2024-10-31 22:16:06,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.5) internal successors, (219), 6 states have internal predecessors, (219), 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) [2024-10-31 22:16:06,609 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:16:06,609 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:06,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:16:06,610 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-10-31 22:16:06,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:06,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1450149955, now seen corresponding path program 1 times [2024-10-31 22:16:06,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:06,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141797041] [2024-10-31 22:16:06,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:06,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:06,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:06,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:16:06,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:06,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141797041] [2024-10-31 22:16:06,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141797041] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:06,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:06,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:16:06,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81288330] [2024-10-31 22:16:06,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:06,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:16:06,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:06,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:16:06,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:16:06,916 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 75 [2024-10-31 22:16:06,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 53 transitions, 153 flow. Second operand has 6 states, 6 states have (on average 35.333333333333336) internal successors, (212), 6 states have internal predecessors, (212), 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) [2024-10-31 22:16:06,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:16:06,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 75 [2024-10-31 22:16:06,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:16:07,250 INFO L124 PetriNetUnfolderBase]: 298/649 cut-off events. [2024-10-31 22:16:07,250 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2024-10-31 22:16:07,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1370 conditions, 649 events. 298/649 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2987 event pairs, 104 based on Foata normal form. 0/561 useless extension candidates. Maximal degree in co-relation 1359. Up to 367 conditions per place. [2024-10-31 22:16:07,255 INFO L140 encePairwiseOnDemand]: 65/75 looper letters, 66 selfloop transitions, 13 changer transitions 6/98 dead transitions. [2024-10-31 22:16:07,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 98 transitions, 418 flow [2024-10-31 22:16:07,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:16:07,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 22:16:07,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 322 transitions. [2024-10-31 22:16:07,257 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6133333333333333 [2024-10-31 22:16:07,257 INFO L175 Difference]: Start difference. First operand has 54 places, 53 transitions, 153 flow. Second operand 7 states and 322 transitions. [2024-10-31 22:16:07,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 98 transitions, 418 flow [2024-10-31 22:16:07,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 98 transitions, 416 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:16:07,262 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 217 flow [2024-10-31 22:16:07,262 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=217, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2024-10-31 22:16:07,263 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -5 predicate places. [2024-10-31 22:16:07,263 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 217 flow [2024-10-31 22:16:07,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.333333333333336) internal successors, (212), 6 states have internal predecessors, (212), 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) [2024-10-31 22:16:07,264 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:16:07,264 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:07,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:16:07,264 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-10-31 22:16:07,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:07,265 INFO L85 PathProgramCache]: Analyzing trace with hash 266376415, now seen corresponding path program 1 times [2024-10-31 22:16:07,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:07,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465489113] [2024-10-31 22:16:07,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:07,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:07,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:08,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:16:08,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:08,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465489113] [2024-10-31 22:16:08,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465489113] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:08,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:08,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-31 22:16:08,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414045739] [2024-10-31 22:16:08,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:08,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 22:16:08,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:08,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:16:08,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:16:08,508 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 75 [2024-10-31 22:16:08,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 217 flow. Second operand has 10 states, 10 states have (on average 35.4) internal successors, (354), 10 states have internal predecessors, (354), 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) [2024-10-31 22:16:08,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:16:08,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 75 [2024-10-31 22:16:08,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:16:09,425 INFO L124 PetriNetUnfolderBase]: 326/694 cut-off events. [2024-10-31 22:16:09,426 INFO L125 PetriNetUnfolderBase]: For 352/359 co-relation queries the response was YES. [2024-10-31 22:16:09,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1691 conditions, 694 events. 326/694 cut-off events. For 352/359 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3266 event pairs, 86 based on Foata normal form. 9/636 useless extension candidates. Maximal degree in co-relation 1675. Up to 381 conditions per place. [2024-10-31 22:16:09,431 INFO L140 encePairwiseOnDemand]: 58/75 looper letters, 73 selfloop transitions, 48 changer transitions 6/140 dead transitions. [2024-10-31 22:16:09,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 140 transitions, 746 flow [2024-10-31 22:16:09,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-31 22:16:09,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-31 22:16:09,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 805 transitions. [2024-10-31 22:16:09,435 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5366666666666666 [2024-10-31 22:16:09,435 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 217 flow. Second operand 20 states and 805 transitions. [2024-10-31 22:16:09,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 140 transitions, 746 flow [2024-10-31 22:16:09,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 140 transitions, 738 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:16:09,442 INFO L231 Difference]: Finished difference. Result has 83 places, 97 transitions, 501 flow [2024-10-31 22:16:09,443 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=501, PETRI_PLACES=83, PETRI_TRANSITIONS=97} [2024-10-31 22:16:09,443 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 15 predicate places. [2024-10-31 22:16:09,444 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 97 transitions, 501 flow [2024-10-31 22:16:09,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 35.4) internal successors, (354), 10 states have internal predecessors, (354), 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) [2024-10-31 22:16:09,444 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:16:09,444 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:09,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-31 22:16:09,445 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-10-31 22:16:09,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:09,445 INFO L85 PathProgramCache]: Analyzing trace with hash 512789855, now seen corresponding path program 2 times [2024-10-31 22:16:09,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:09,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327103888] [2024-10-31 22:16:09,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:09,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:09,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:10,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:16:10,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:10,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327103888] [2024-10-31 22:16:10,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327103888] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:10,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:10,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-31 22:16:10,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188029940] [2024-10-31 22:16:10,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:10,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-31 22:16:10,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:10,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-31 22:16:10,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:16:10,648 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 75 [2024-10-31 22:16:10,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 97 transitions, 501 flow. Second operand has 11 states, 11 states have (on average 32.45454545454545) internal successors, (357), 11 states have internal predecessors, (357), 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) [2024-10-31 22:16:10,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:16:10,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 75 [2024-10-31 22:16:10,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:16:11,544 INFO L124 PetriNetUnfolderBase]: 469/965 cut-off events. [2024-10-31 22:16:11,545 INFO L125 PetriNetUnfolderBase]: For 925/925 co-relation queries the response was YES. [2024-10-31 22:16:11,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2892 conditions, 965 events. 469/965 cut-off events. For 925/925 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 4663 event pairs, 145 based on Foata normal form. 6/922 useless extension candidates. Maximal degree in co-relation 2872. Up to 502 conditions per place. [2024-10-31 22:16:11,552 INFO L140 encePairwiseOnDemand]: 61/75 looper letters, 91 selfloop transitions, 39 changer transitions 30/169 dead transitions. [2024-10-31 22:16:11,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 169 transitions, 1129 flow [2024-10-31 22:16:11,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-31 22:16:11,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-31 22:16:11,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 535 transitions. [2024-10-31 22:16:11,555 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5487179487179488 [2024-10-31 22:16:11,555 INFO L175 Difference]: Start difference. First operand has 83 places, 97 transitions, 501 flow. Second operand 13 states and 535 transitions. [2024-10-31 22:16:11,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 169 transitions, 1129 flow [2024-10-31 22:16:11,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 169 transitions, 1043 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-10-31 22:16:11,567 INFO L231 Difference]: Finished difference. Result has 96 places, 109 transitions, 656 flow [2024-10-31 22:16:11,568 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=656, PETRI_PLACES=96, PETRI_TRANSITIONS=109} [2024-10-31 22:16:11,568 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 28 predicate places. [2024-10-31 22:16:11,569 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 109 transitions, 656 flow [2024-10-31 22:16:11,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 32.45454545454545) internal successors, (357), 11 states have internal predecessors, (357), 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) [2024-10-31 22:16:11,570 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:16:11,570 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:11,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-31 22:16:11,571 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-10-31 22:16:11,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:11,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1921422159, now seen corresponding path program 3 times [2024-10-31 22:16:11,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:11,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009829903] [2024-10-31 22:16:11,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:11,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:11,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:12,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:16:12,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:12,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009829903] [2024-10-31 22:16:12,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009829903] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:12,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:12,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-31 22:16:12,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038959354] [2024-10-31 22:16:12,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:12,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-31 22:16:12,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:12,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-31 22:16:12,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:16:12,805 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 75 [2024-10-31 22:16:12,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 109 transitions, 656 flow. Second operand has 11 states, 11 states have (on average 32.45454545454545) internal successors, (357), 11 states have internal predecessors, (357), 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) [2024-10-31 22:16:12,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:16:12,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 75 [2024-10-31 22:16:12,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:16:13,586 INFO L124 PetriNetUnfolderBase]: 486/1024 cut-off events. [2024-10-31 22:16:13,586 INFO L125 PetriNetUnfolderBase]: For 1413/1413 co-relation queries the response was YES. [2024-10-31 22:16:13,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3316 conditions, 1024 events. 486/1024 cut-off events. For 1413/1413 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5126 event pairs, 178 based on Foata normal form. 16/986 useless extension candidates. Maximal degree in co-relation 3289. Up to 496 conditions per place. [2024-10-31 22:16:13,594 INFO L140 encePairwiseOnDemand]: 59/75 looper letters, 99 selfloop transitions, 54 changer transitions 17/179 dead transitions. [2024-10-31 22:16:13,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 179 transitions, 1344 flow [2024-10-31 22:16:13,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-31 22:16:13,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-31 22:16:13,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 543 transitions. [2024-10-31 22:16:13,597 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.556923076923077 [2024-10-31 22:16:13,597 INFO L175 Difference]: Start difference. First operand has 96 places, 109 transitions, 656 flow. Second operand 13 states and 543 transitions. [2024-10-31 22:16:13,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 179 transitions, 1344 flow [2024-10-31 22:16:13,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 179 transitions, 1262 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-10-31 22:16:13,612 INFO L231 Difference]: Finished difference. Result has 102 places, 124 transitions, 890 flow [2024-10-31 22:16:13,612 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=890, PETRI_PLACES=102, PETRI_TRANSITIONS=124} [2024-10-31 22:16:13,613 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 34 predicate places. [2024-10-31 22:16:13,613 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 124 transitions, 890 flow [2024-10-31 22:16:13,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 32.45454545454545) internal successors, (357), 11 states have internal predecessors, (357), 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) [2024-10-31 22:16:13,613 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:16:13,614 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:13,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-31 22:16:13,614 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting workerErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-10-31 22:16:13,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:13,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1532111107, now seen corresponding path program 1 times [2024-10-31 22:16:13,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:13,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795147916] [2024-10-31 22:16:13,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:13,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:13,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:16:13,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:13,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795147916] [2024-10-31 22:16:13,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795147916] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:13,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:13,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-31 22:16:13,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979275214] [2024-10-31 22:16:13,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:13,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 22:16:13,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:13,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:16:13,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:16:14,486 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 75 [2024-10-31 22:16:14,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 124 transitions, 890 flow. Second operand has 10 states, 10 states have (on average 34.5) internal successors, (345), 10 states have internal predecessors, (345), 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) [2024-10-31 22:16:14,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:16:14,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 75 [2024-10-31 22:16:14,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:16:15,758 INFO L124 PetriNetUnfolderBase]: 759/1584 cut-off events. [2024-10-31 22:16:15,758 INFO L125 PetriNetUnfolderBase]: For 2669/2714 co-relation queries the response was YES. [2024-10-31 22:16:15,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5325 conditions, 1584 events. 759/1584 cut-off events. For 2669/2714 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 9606 event pairs, 139 based on Foata normal form. 67/1553 useless extension candidates. Maximal degree in co-relation 5296. Up to 495 conditions per place. [2024-10-31 22:16:15,771 INFO L140 encePairwiseOnDemand]: 57/75 looper letters, 192 selfloop transitions, 112 changer transitions 16/332 dead transitions. [2024-10-31 22:16:15,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 332 transitions, 2723 flow [2024-10-31 22:16:15,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-31 22:16:15,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-31 22:16:15,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1078 transitions. [2024-10-31 22:16:15,775 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5528205128205128 [2024-10-31 22:16:15,776 INFO L175 Difference]: Start difference. First operand has 102 places, 124 transitions, 890 flow. Second operand 26 states and 1078 transitions. [2024-10-31 22:16:15,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 332 transitions, 2723 flow [2024-10-31 22:16:15,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 332 transitions, 2613 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-10-31 22:16:15,802 INFO L231 Difference]: Finished difference. Result has 137 places, 199 transitions, 1745 flow [2024-10-31 22:16:15,802 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=841, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1745, PETRI_PLACES=137, PETRI_TRANSITIONS=199} [2024-10-31 22:16:15,803 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 69 predicate places. [2024-10-31 22:16:15,803 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 199 transitions, 1745 flow [2024-10-31 22:16:15,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 34.5) internal successors, (345), 10 states have internal predecessors, (345), 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) [2024-10-31 22:16:15,803 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:16:15,803 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:15,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-31 22:16:15,804 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-10-31 22:16:15,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:15,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1531096195, now seen corresponding path program 4 times [2024-10-31 22:16:15,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:15,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368845321] [2024-10-31 22:16:15,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:15,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:16,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:16:16,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:16,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368845321] [2024-10-31 22:16:16,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368845321] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:16,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:16,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-31 22:16:16,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680470041] [2024-10-31 22:16:16,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:16,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 22:16:16,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:16,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:16:16,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:16:16,604 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 75 [2024-10-31 22:16:16,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 199 transitions, 1745 flow. Second operand has 10 states, 10 states have (on average 35.6) internal successors, (356), 10 states have internal predecessors, (356), 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) [2024-10-31 22:16:16,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:16:16,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 75 [2024-10-31 22:16:16,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:16:18,104 INFO L124 PetriNetUnfolderBase]: 1325/2843 cut-off events. [2024-10-31 22:16:18,105 INFO L125 PetriNetUnfolderBase]: For 7856/7874 co-relation queries the response was YES. [2024-10-31 22:16:18,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11150 conditions, 2843 events. 1325/2843 cut-off events. For 7856/7874 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 18045 event pairs, 201 based on Foata normal form. 69/2746 useless extension candidates. Maximal degree in co-relation 11107. Up to 591 conditions per place. [2024-10-31 22:16:18,134 INFO L140 encePairwiseOnDemand]: 60/75 looper letters, 319 selfloop transitions, 124 changer transitions 22/495 dead transitions. [2024-10-31 22:16:18,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 495 transitions, 4475 flow [2024-10-31 22:16:18,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-31 22:16:18,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-31 22:16:18,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 893 transitions. [2024-10-31 22:16:18,138 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6266666666666667 [2024-10-31 22:16:18,138 INFO L175 Difference]: Start difference. First operand has 137 places, 199 transitions, 1745 flow. Second operand 19 states and 893 transitions. [2024-10-31 22:16:18,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 495 transitions, 4475 flow [2024-10-31 22:16:18,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 495 transitions, 4441 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-10-31 22:16:18,206 INFO L231 Difference]: Finished difference. Result has 165 places, 270 transitions, 2712 flow [2024-10-31 22:16:18,206 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=1693, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2712, PETRI_PLACES=165, PETRI_TRANSITIONS=270} [2024-10-31 22:16:18,207 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 97 predicate places. [2024-10-31 22:16:18,207 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 270 transitions, 2712 flow [2024-10-31 22:16:18,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 35.6) internal successors, (356), 10 states have internal predecessors, (356), 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) [2024-10-31 22:16:18,208 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:16:18,208 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:18,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-31 22:16:18,208 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-10-31 22:16:18,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:18,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1884506337, now seen corresponding path program 5 times [2024-10-31 22:16:18,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:18,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812298867] [2024-10-31 22:16:18,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:18,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:18,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:18,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:16:18,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:18,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812298867] [2024-10-31 22:16:18,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812298867] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:18,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:18,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 22:16:18,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061635691] [2024-10-31 22:16:18,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:18,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 22:16:18,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:18,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 22:16:18,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:16:18,946 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 75 [2024-10-31 22:16:18,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 270 transitions, 2712 flow. Second operand has 9 states, 9 states have (on average 35.55555555555556) internal successors, (320), 9 states have internal predecessors, (320), 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) [2024-10-31 22:16:18,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:16:18,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 75 [2024-10-31 22:16:18,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:16:19,912 INFO L124 PetriNetUnfolderBase]: 1270/2740 cut-off events. [2024-10-31 22:16:19,912 INFO L125 PetriNetUnfolderBase]: For 14982/15036 co-relation queries the response was YES. [2024-10-31 22:16:19,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13509 conditions, 2740 events. 1270/2740 cut-off events. For 14982/15036 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 17100 event pairs, 483 based on Foata normal form. 36/2603 useless extension candidates. Maximal degree in co-relation 13453. Up to 1688 conditions per place. [2024-10-31 22:16:19,989 INFO L140 encePairwiseOnDemand]: 61/75 looper letters, 193 selfloop transitions, 87 changer transitions 11/315 dead transitions. [2024-10-31 22:16:19,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 315 transitions, 3742 flow [2024-10-31 22:16:19,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-31 22:16:19,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-31 22:16:19,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 595 transitions. [2024-10-31 22:16:19,992 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-10-31 22:16:19,992 INFO L175 Difference]: Start difference. First operand has 165 places, 270 transitions, 2712 flow. Second operand 14 states and 595 transitions. [2024-10-31 22:16:19,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 315 transitions, 3742 flow [2024-10-31 22:16:20,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 315 transitions, 3547 flow, removed 91 selfloop flow, removed 2 redundant places. [2024-10-31 22:16:20,085 INFO L231 Difference]: Finished difference. Result has 178 places, 271 transitions, 2757 flow [2024-10-31 22:16:20,085 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=2543, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2757, PETRI_PLACES=178, PETRI_TRANSITIONS=271} [2024-10-31 22:16:20,086 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 110 predicate places. [2024-10-31 22:16:20,086 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 271 transitions, 2757 flow [2024-10-31 22:16:20,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 35.55555555555556) internal successors, (320), 9 states have internal predecessors, (320), 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) [2024-10-31 22:16:20,086 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:16:20,087 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:20,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-31 22:16:20,087 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting workerErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-10-31 22:16:20,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:20,087 INFO L85 PathProgramCache]: Analyzing trace with hash -888022835, now seen corresponding path program 2 times [2024-10-31 22:16:20,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:20,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086726858] [2024-10-31 22:16:20,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:20,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:20,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:20,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:16:20,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:20,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086726858] [2024-10-31 22:16:20,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086726858] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:20,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:20,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-31 22:16:20,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604864256] [2024-10-31 22:16:20,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:20,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 22:16:20,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:20,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:16:20,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:16:21,027 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 75 [2024-10-31 22:16:21,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 271 transitions, 2757 flow. Second operand has 10 states, 10 states have (on average 34.5) internal successors, (345), 10 states have internal predecessors, (345), 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) [2024-10-31 22:16:21,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:16:21,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 75 [2024-10-31 22:16:21,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:16:22,624 INFO L124 PetriNetUnfolderBase]: 1722/3639 cut-off events. [2024-10-31 22:16:22,625 INFO L125 PetriNetUnfolderBase]: For 20907/20957 co-relation queries the response was YES. [2024-10-31 22:16:22,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18309 conditions, 3639 events. 1722/3639 cut-off events. For 20907/20957 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 24196 event pairs, 568 based on Foata normal form. 47/3470 useless extension candidates. Maximal degree in co-relation 18251. Up to 1880 conditions per place. [2024-10-31 22:16:22,668 INFO L140 encePairwiseOnDemand]: 57/75 looper letters, 330 selfloop transitions, 166 changer transitions 4/516 dead transitions. [2024-10-31 22:16:22,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 516 transitions, 6263 flow [2024-10-31 22:16:22,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-31 22:16:22,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-10-31 22:16:22,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1044 transitions. [2024-10-31 22:16:22,680 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5568 [2024-10-31 22:16:22,680 INFO L175 Difference]: Start difference. First operand has 178 places, 271 transitions, 2757 flow. Second operand 25 states and 1044 transitions. [2024-10-31 22:16:22,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 516 transitions, 6263 flow [2024-10-31 22:16:22,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 516 transitions, 5620 flow, removed 120 selfloop flow, removed 14 redundant places. [2024-10-31 22:16:22,838 INFO L231 Difference]: Finished difference. Result has 199 places, 353 transitions, 3851 flow [2024-10-31 22:16:22,838 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=2491, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=3851, PETRI_PLACES=199, PETRI_TRANSITIONS=353} [2024-10-31 22:16:22,839 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 131 predicate places. [2024-10-31 22:16:22,839 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 353 transitions, 3851 flow [2024-10-31 22:16:22,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 34.5) internal successors, (345), 10 states have internal predecessors, (345), 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) [2024-10-31 22:16:22,839 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:16:22,839 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:22,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-31 22:16:22,839 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-10-31 22:16:22,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:22,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1806089651, now seen corresponding path program 6 times [2024-10-31 22:16:22,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:22,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309266836] [2024-10-31 22:16:22,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:22,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:23,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:16:23,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:23,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309266836] [2024-10-31 22:16:23,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309266836] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:23,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:23,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-31 22:16:23,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631317583] [2024-10-31 22:16:23,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:23,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-31 22:16:23,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:23,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-31 22:16:23,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:16:23,958 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 75 [2024-10-31 22:16:23,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 353 transitions, 3851 flow. Second operand has 11 states, 11 states have (on average 32.45454545454545) internal successors, (357), 11 states have internal predecessors, (357), 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) [2024-10-31 22:16:23,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:16:23,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 75 [2024-10-31 22:16:23,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:16:25,498 INFO L124 PetriNetUnfolderBase]: 1763/3678 cut-off events. [2024-10-31 22:16:25,498 INFO L125 PetriNetUnfolderBase]: For 20736/20736 co-relation queries the response was YES. [2024-10-31 22:16:25,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18575 conditions, 3678 events. 1763/3678 cut-off events. For 20736/20736 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 23751 event pairs, 699 based on Foata normal form. 4/3498 useless extension candidates. Maximal degree in co-relation 18508. Up to 2425 conditions per place. [2024-10-31 22:16:25,589 INFO L140 encePairwiseOnDemand]: 60/75 looper letters, 239 selfloop transitions, 148 changer transitions 11/407 dead transitions. [2024-10-31 22:16:25,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 407 transitions, 5164 flow [2024-10-31 22:16:25,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-31 22:16:25,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-31 22:16:25,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 642 transitions. [2024-10-31 22:16:25,592 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5035294117647059 [2024-10-31 22:16:25,592 INFO L175 Difference]: Start difference. First operand has 199 places, 353 transitions, 3851 flow. Second operand 17 states and 642 transitions. [2024-10-31 22:16:25,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 407 transitions, 5164 flow [2024-10-31 22:16:25,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 407 transitions, 5032 flow, removed 65 selfloop flow, removed 1 redundant places. [2024-10-31 22:16:25,745 INFO L231 Difference]: Finished difference. Result has 216 places, 350 transitions, 4031 flow [2024-10-31 22:16:25,745 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=3532, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4031, PETRI_PLACES=216, PETRI_TRANSITIONS=350} [2024-10-31 22:16:25,746 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 148 predicate places. [2024-10-31 22:16:25,746 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 350 transitions, 4031 flow [2024-10-31 22:16:25,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 32.45454545454545) internal successors, (357), 11 states have internal predecessors, (357), 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) [2024-10-31 22:16:25,747 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:16:25,747 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:25,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-31 22:16:25,747 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-10-31 22:16:25,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:25,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1153789535, now seen corresponding path program 7 times [2024-10-31 22:16:25,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:25,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552384968] [2024-10-31 22:16:25,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:25,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:25,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:26,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:16:26,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:26,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552384968] [2024-10-31 22:16:26,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552384968] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:26,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:26,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 22:16:26,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135598961] [2024-10-31 22:16:26,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:26,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 22:16:26,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:26,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 22:16:26,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72