./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46ba25b-2400-46a9-b204-c42246106745/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46ba25b-2400-46a9-b204-c42246106745/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46ba25b-2400-46a9-b204-c42246106745/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46ba25b-2400-46a9-b204-c42246106745/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46ba25b-2400-46a9-b204-c42246106745/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46ba25b-2400-46a9-b204-c42246106745/bin/uautomizer-verify-qhAvR1uOyd --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 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:45:58,576 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:45:58,670 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46ba25b-2400-46a9-b204-c42246106745/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-13 13:45:58,678 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:45:58,678 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:45:58,714 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:45:58,716 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:45:58,716 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:45:58,717 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:45:58,717 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:45:58,718 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:45:58,718 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:45:58,719 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:45:58,719 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:45:58,719 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:45:58,719 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:45:58,720 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:45:58,720 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:45:58,720 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:45:58,720 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:45:58,720 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 13:45:58,720 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 13:45:58,720 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 13:45:58,720 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:45:58,720 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 13:45:58,721 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:45:58,721 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 13:45:58,721 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:45:58,721 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:45:58,721 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:45:58,721 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:45:58,721 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:45:58,722 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:45:58,722 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:45:58,722 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:45:58,722 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:45:58,722 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:45:58,723 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:45:58,723 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:45:58,723 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:45:58,724 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:45:58,724 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:45:58,724 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46ba25b-2400-46a9-b204-c42246106745/bin/uautomizer-verify-qhAvR1uOyd 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 -> 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac [2024-11-13 13:45:59,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:45:59,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:45:59,056 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:45:59,057 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:45:59,057 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:45:59,058 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46ba25b-2400-46a9-b204-c42246106745/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c Unable to find full path for "g++" [2024-11-13 13:46:00,914 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:46:01,241 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:46:01,242 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46ba25b-2400-46a9-b204-c42246106745/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2024-11-13 13:46:01,251 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46ba25b-2400-46a9-b204-c42246106745/bin/uautomizer-verify-qhAvR1uOyd/data/5271c4a20/c6db2bc9f8ee4915959707e1c68b385f/FLAGbc3663dbc [2024-11-13 13:46:01,268 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46ba25b-2400-46a9-b204-c42246106745/bin/uautomizer-verify-qhAvR1uOyd/data/5271c4a20/c6db2bc9f8ee4915959707e1c68b385f [2024-11-13 13:46:01,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:46:01,272 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:46:01,273 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:46:01,274 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:46:01,278 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:46:01,279 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:46:01" (1/1) ... [2024-11-13 13:46:01,280 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1087c6bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:46:01, skipping insertion in model container [2024-11-13 13:46:01,280 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:46:01" (1/1) ... [2024-11-13 13:46:01,298 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:46:01,546 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 13:46:01,551 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:46:01,567 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:46:01,603 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:46:01,621 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:46:01,621 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:46:01 WrapperNode [2024-11-13 13:46:01,622 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:46:01,623 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:46:01,623 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:46:01,623 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:46:01,631 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:46:01" (1/1) ... [2024-11-13 13:46:01,640 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:46:01" (1/1) ... [2024-11-13 13:46:01,684 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 17, calls inlined = 19, statements flattened = 249 [2024-11-13 13:46:01,687 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:46:01,688 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:46:01,688 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:46:01,688 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:46:01,700 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:46:01" (1/1) ... [2024-11-13 13:46:01,701 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:46:01" (1/1) ... [2024-11-13 13:46:01,709 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:46:01" (1/1) ... [2024-11-13 13:46:01,734 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-13 13:46:01,738 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:46:01" (1/1) ... [2024-11-13 13:46:01,739 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:46:01" (1/1) ... [2024-11-13 13:46:01,753 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:46:01" (1/1) ... [2024-11-13 13:46:01,762 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:46:01" (1/1) ... [2024-11-13 13:46:01,766 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:46:01" (1/1) ... [2024-11-13 13:46:01,768 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:46:01" (1/1) ... [2024-11-13 13:46:01,773 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:46:01,774 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:46:01,778 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:46:01,778 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:46:01,780 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:46:01" (1/1) ... [2024-11-13 13:46:01,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:46:01,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46ba25b-2400-46a9-b204-c42246106745/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:46:01,823 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46ba25b-2400-46a9-b204-c42246106745/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:46:01,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46ba25b-2400-46a9-b204-c42246106745/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:46:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:46:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-13 13:46:01,854 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-13 13:46:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-13 13:46:01,854 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-13 13:46:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-13 13:46:01,854 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-13 13:46:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:46:01,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 13:46:01,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 13:46:01,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 13:46:01,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-13 13:46:01,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-13 13:46:01,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 13:46:01,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:46:01,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:46:01,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 13:46:01,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 13:46:01,857 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 13:46:02,003 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:46:02,006 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:46:02,652 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 13:46:02,652 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:46:03,195 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:46:03,195 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-13 13:46:03,196 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:46:03 BoogieIcfgContainer [2024-11-13 13:46:03,196 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:46:03,198 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:46:03,198 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:46:03,203 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:46:03,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:46:01" (1/3) ... [2024-11-13 13:46:03,204 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26d4786c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:46:03, skipping insertion in model container [2024-11-13 13:46:03,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:46:01" (2/3) ... [2024-11-13 13:46:03,204 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26d4786c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:46:03, skipping insertion in model container [2024-11-13 13:46:03,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:46:03" (3/3) ... [2024-11-13 13:46:03,206 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2024-11-13 13:46:03,222 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:46:03,224 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-queue-add-3-nl.wvr.c that has 4 procedures, 56 locations, 1 initial locations, 5 loop locations, and 16 error locations. [2024-11-13 13:46:03,224 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 13:46:03,308 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-13 13:46:03,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 62 transitions, 145 flow [2024-11-13 13:46:03,406 INFO L124 PetriNetUnfolderBase]: 7/59 cut-off events. [2024-11-13 13:46:03,409 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-13 13:46:03,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 59 events. 7/59 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 149 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2024-11-13 13:46:03,416 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 62 transitions, 145 flow [2024-11-13 13:46:03,421 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 58 transitions, 134 flow [2024-11-13 13:46:03,433 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:46:03,453 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;@47176423, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:46:03,453 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-11-13 13:46:03,460 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:46:03,460 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-11-13 13:46:03,463 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:46:03,463 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:03,464 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 13:46:03,464 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:46:03,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:03,469 INFO L85 PathProgramCache]: Analyzing trace with hash 754596, now seen corresponding path program 1 times [2024-11-13 13:46:03,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:03,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820035126] [2024-11-13 13:46:03,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:03,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:03,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:03,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:46:03,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:03,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820035126] [2024-11-13 13:46:03,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820035126] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:46:03,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:46:03,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 13:46:03,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709700973] [2024-11-13 13:46:03,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:46:03,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:46:03,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:03,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:46:03,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:46:03,820 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-13 13:46:03,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:03,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:03,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-13 13:46:03,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:05,146 INFO L124 PetriNetUnfolderBase]: 4012/6158 cut-off events. [2024-11-13 13:46:05,146 INFO L125 PetriNetUnfolderBase]: For 304/304 co-relation queries the response was YES. [2024-11-13 13:46:05,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11859 conditions, 6158 events. 4012/6158 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 37733 event pairs, 3528 based on Foata normal form. 379/4445 useless extension candidates. Maximal degree in co-relation 11339. Up to 5391 conditions per place. [2024-11-13 13:46:05,211 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 40 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2024-11-13 13:46:05,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 52 transitions, 206 flow [2024-11-13 13:46:05,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:46:05,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:46:05,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-11-13 13:46:05,227 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.478494623655914 [2024-11-13 13:46:05,229 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 134 flow. Second operand 3 states and 89 transitions. [2024-11-13 13:46:05,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 52 transitions, 206 flow [2024-11-13 13:46:05,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 52 transitions, 194 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-13 13:46:05,251 INFO L231 Difference]: Finished difference. Result has 53 places, 52 transitions, 114 flow [2024-11-13 13:46:05,255 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=53, PETRI_TRANSITIONS=52} [2024-11-13 13:46:05,259 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, -8 predicate places. [2024-11-13 13:46:05,260 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 52 transitions, 114 flow [2024-11-13 13:46:05,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:05,261 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:05,261 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 13:46:05,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:46:05,262 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:46:05,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:05,262 INFO L85 PathProgramCache]: Analyzing trace with hash 754597, now seen corresponding path program 1 times [2024-11-13 13:46:05,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:05,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119034906] [2024-11-13 13:46:05,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:05,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:05,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:05,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:46:05,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:05,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119034906] [2024-11-13 13:46:05,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119034906] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:46:05,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:46:05,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:46:05,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152045193] [2024-11-13 13:46:05,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:46:05,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:46:05,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:05,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:46:05,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:46:05,829 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-13 13:46:05,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 52 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:05,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:05,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-13 13:46:05,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:06,829 INFO L124 PetriNetUnfolderBase]: 4013/6161 cut-off events. [2024-11-13 13:46:06,829 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-11-13 13:46:06,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11678 conditions, 6161 events. 4013/6161 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 37750 event pairs, 3528 based on Foata normal form. 0/4067 useless extension candidates. Maximal degree in co-relation 11649. Up to 5400 conditions per place. [2024-11-13 13:46:06,873 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 43 selfloop transitions, 4 changer transitions 0/55 dead transitions. [2024-11-13 13:46:06,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 214 flow [2024-11-13 13:46:06,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:46:06,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:46:06,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-11-13 13:46:06,875 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-11-13 13:46:06,875 INFO L175 Difference]: Start difference. First operand has 53 places, 52 transitions, 114 flow. Second operand 4 states and 104 transitions. [2024-11-13 13:46:06,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 214 flow [2024-11-13 13:46:06,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 55 transitions, 210 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 13:46:06,880 INFO L231 Difference]: Finished difference. Result has 56 places, 55 transitions, 137 flow [2024-11-13 13:46:06,880 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=137, PETRI_PLACES=56, PETRI_TRANSITIONS=55} [2024-11-13 13:46:06,881 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, -5 predicate places. [2024-11-13 13:46:06,882 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 55 transitions, 137 flow [2024-11-13 13:46:06,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:06,883 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:06,883 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-13 13:46:06,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 13:46:06,883 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:46:06,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:06,884 INFO L85 PathProgramCache]: Analyzing trace with hash 23393325, now seen corresponding path program 1 times [2024-11-13 13:46:06,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:06,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141385467] [2024-11-13 13:46:06,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:06,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:06,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:07,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:46:07,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:07,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141385467] [2024-11-13 13:46:07,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141385467] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:46:07,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:46:07,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:46:07,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785138979] [2024-11-13 13:46:07,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:46:07,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:46:07,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:07,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:46:07,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:46:07,329 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-13 13:46:07,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 137 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:07,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:07,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-13 13:46:07,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:08,116 INFO L124 PetriNetUnfolderBase]: 4014/6164 cut-off events. [2024-11-13 13:46:08,116 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-11-13 13:46:08,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11695 conditions, 6164 events. 4014/6164 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 37794 event pairs, 3528 based on Foata normal form. 0/4069 useless extension candidates. Maximal degree in co-relation 11670. Up to 5399 conditions per place. [2024-11-13 13:46:08,165 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 43 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2024-11-13 13:46:08,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 58 transitions, 243 flow [2024-11-13 13:46:08,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:46:08,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 13:46:08,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-11-13 13:46:08,169 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-11-13 13:46:08,170 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 137 flow. Second operand 5 states and 121 transitions. [2024-11-13 13:46:08,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 58 transitions, 243 flow [2024-11-13 13:46:08,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 58 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 13:46:08,173 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 171 flow [2024-11-13 13:46:08,174 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=171, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2024-11-13 13:46:08,175 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 0 predicate places. [2024-11-13 13:46:08,175 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 171 flow [2024-11-13 13:46:08,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:08,176 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:08,176 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-11-13 13:46:08,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 13:46:08,176 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:46:08,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:08,177 INFO L85 PathProgramCache]: Analyzing trace with hash 725191954, now seen corresponding path program 1 times [2024-11-13 13:46:08,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:08,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596805866] [2024-11-13 13:46:08,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:08,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:08,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:08,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:46:08,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:08,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596805866] [2024-11-13 13:46:08,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596805866] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:46:08,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914169188] [2024-11-13 13:46:08,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:08,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:46:08,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46ba25b-2400-46a9-b204-c42246106745/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:46:08,569 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46ba25b-2400-46a9-b204-c42246106745/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:46:08,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46ba25b-2400-46a9-b204-c42246106745/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:46:08,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:08,665 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-13 13:46:08,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:46:08,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-13 13:46:09,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:46:09,117 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:46:09,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:46:09,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914169188] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:46:09,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:46:09,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-13 13:46:09,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532612870] [2024-11-13 13:46:09,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:46:09,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:46:09,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:09,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:46:09,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:46:09,391 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-13 13:46:09,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 171 flow. Second operand has 11 states, 11 states have (on average 15.363636363636363) internal successors, (169), 11 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:09,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:09,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-13 13:46:09,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:10,622 INFO L124 PetriNetUnfolderBase]: 4015/6166 cut-off events. [2024-11-13 13:46:10,623 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2024-11-13 13:46:10,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11718 conditions, 6166 events. 4015/6166 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 37749 event pairs, 3528 based on Foata normal form. 0/4074 useless extension candidates. Maximal degree in co-relation 11680. Up to 5399 conditions per place. [2024-11-13 13:46:10,666 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 41 selfloop transitions, 11 changer transitions 0/60 dead transitions. [2024-11-13 13:46:10,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 60 transitions, 286 flow [2024-11-13 13:46:10,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 13:46:10,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 13:46:10,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-11-13 13:46:10,670 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3172043010752688 [2024-11-13 13:46:10,670 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 171 flow. Second operand 9 states and 177 transitions. [2024-11-13 13:46:10,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 60 transitions, 286 flow [2024-11-13 13:46:10,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 60 transitions, 285 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 13:46:10,672 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 203 flow [2024-11-13 13:46:10,672 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=203, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2024-11-13 13:46:10,675 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 6 predicate places. [2024-11-13 13:46:10,676 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 203 flow [2024-11-13 13:46:10,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.363636363636363) internal successors, (169), 11 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:10,676 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:10,676 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-13 13:46:10,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46ba25b-2400-46a9-b204-c42246106745/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 13:46:10,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46ba25b-2400-46a9-b204-c42246106745/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:46:10,881 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:46:10,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:10,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1006172572, now seen corresponding path program 1 times [2024-11-13 13:46:10,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:10,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003712292] [2024-11-13 13:46:10,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:10,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:10,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:11,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:46:11,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:11,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003712292] [2024-11-13 13:46:11,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003712292] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:46:11,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244081535] [2024-11-13 13:46:11,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:11,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:46:11,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46ba25b-2400-46a9-b204-c42246106745/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:46:11,340 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46ba25b-2400-46a9-b204-c42246106745/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:46:11,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46ba25b-2400-46a9-b204-c42246106745/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:46:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:11,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 13:46:11,454 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:46:11,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-13 13:46:11,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:46:11,669 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:46:11,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:46:11,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244081535] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:46:11,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:46:11,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2024-11-13 13:46:11,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038238189] [2024-11-13 13:46:11,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:46:11,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 13:46:11,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:11,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 13:46:11,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-13 13:46:11,975 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-13 13:46:11,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 203 flow. Second operand has 13 states, 13 states have (on average 15.307692307692308) internal successors, (199), 13 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:11,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:11,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-13 13:46:11,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:13,152 INFO L124 PetriNetUnfolderBase]: 4016/6168 cut-off events. [2024-11-13 13:46:13,152 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2024-11-13 13:46:13,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11734 conditions, 6168 events. 4016/6168 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 37825 event pairs, 3528 based on Foata normal form. 2/4078 useless extension candidates. Maximal degree in co-relation 11688. Up to 5392 conditions per place. [2024-11-13 13:46:13,195 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 36 selfloop transitions, 18 changer transitions 0/62 dead transitions. [2024-11-13 13:46:13,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 62 transitions, 317 flow [2024-11-13 13:46:13,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 13:46:13,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 13:46:13,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-11-13 13:46:13,200 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32616487455197135 [2024-11-13 13:46:13,200 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 203 flow. Second operand 9 states and 182 transitions. [2024-11-13 13:46:13,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 62 transitions, 317 flow [2024-11-13 13:46:13,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 62 transitions, 270 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-11-13 13:46:13,203 INFO L231 Difference]: Finished difference. Result has 65 places, 62 transitions, 198 flow [2024-11-13 13:46:13,203 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=198, PETRI_PLACES=65, PETRI_TRANSITIONS=62} [2024-11-13 13:46:13,203 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 4 predicate places. [2024-11-13 13:46:13,205 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 62 transitions, 198 flow [2024-11-13 13:46:13,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.307692307692308) internal successors, (199), 13 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:13,205 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:13,205 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:46:13,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46ba25b-2400-46a9-b204-c42246106745/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 13:46:13,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46ba25b-2400-46a9-b204-c42246106745/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:46:13,407 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:46:13,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:13,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1129881799, now seen corresponding path program 1 times [2024-11-13 13:46:13,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:13,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246390992] [2024-11-13 13:46:13,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:13,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:13,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:13,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:46:13,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:13,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246390992] [2024-11-13 13:46:13,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246390992] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:46:13,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:46:13,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:46:13,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898386523] [2024-11-13 13:46:13,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:46:13,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:46:13,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:13,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:46:13,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:46:13,557 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-13 13:46:13,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 62 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:13,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:13,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-13 13:46:13,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:14,312 INFO L124 PetriNetUnfolderBase]: 4177/6469 cut-off events. [2024-11-13 13:46:14,313 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-11-13 13:46:14,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12314 conditions, 6469 events. 4177/6469 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 39384 event pairs, 3675 based on Foata normal form. 112/4483 useless extension candidates. Maximal degree in co-relation 11673. Up to 5406 conditions per place. [2024-11-13 13:46:14,355 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 74 selfloop transitions, 3 changer transitions 1/86 dead transitions. [2024-11-13 13:46:14,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 86 transitions, 443 flow [2024-11-13 13:46:14,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:46:14,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:46:14,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2024-11-13 13:46:14,357 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5483870967741935 [2024-11-13 13:46:14,358 INFO L175 Difference]: Start difference. First operand has 65 places, 62 transitions, 198 flow. Second operand 4 states and 136 transitions. [2024-11-13 13:46:14,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 86 transitions, 443 flow [2024-11-13 13:46:14,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 86 transitions, 390 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-13 13:46:14,361 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 190 flow [2024-11-13 13:46:14,361 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2024-11-13 13:46:14,362 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 3 predicate places. [2024-11-13 13:46:14,362 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 190 flow [2024-11-13 13:46:14,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:14,362 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:14,362 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:46:14,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 13:46:14,362 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:46:14,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:14,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1403376716, now seen corresponding path program 1 times [2024-11-13 13:46:14,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:14,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355400119] [2024-11-13 13:46:14,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:14,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:14,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:46:14,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:14,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355400119] [2024-11-13 13:46:14,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355400119] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:46:14,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:46:14,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:46:14,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865374327] [2024-11-13 13:46:14,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:46:14,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:46:14,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:14,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:46:14,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:46:14,756 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-13 13:46:14,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 190 flow. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:14,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:14,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-13 13:46:14,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:15,345 INFO L124 PetriNetUnfolderBase]: 3028/4665 cut-off events. [2024-11-13 13:46:15,346 INFO L125 PetriNetUnfolderBase]: For 436/436 co-relation queries the response was YES. [2024-11-13 13:46:15,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9830 conditions, 4665 events. 3028/4665 cut-off events. For 436/436 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 26635 event pairs, 2670 based on Foata normal form. 0/3354 useless extension candidates. Maximal degree in co-relation 9234. Up to 4179 conditions per place. [2024-11-13 13:46:15,377 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 47 selfloop transitions, 4 changer transitions 0/59 dead transitions. [2024-11-13 13:46:15,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 59 transitions, 280 flow [2024-11-13 13:46:15,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:46:15,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:46:15,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-11-13 13:46:15,378 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-11-13 13:46:15,379 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 190 flow. Second operand 4 states and 98 transitions. [2024-11-13 13:46:15,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 59 transitions, 280 flow [2024-11-13 13:46:15,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 59 transitions, 275 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 13:46:15,381 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 181 flow [2024-11-13 13:46:15,381 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2024-11-13 13:46:15,382 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 1 predicate places. [2024-11-13 13:46:15,382 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 181 flow [2024-11-13 13:46:15,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:15,382 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:15,382 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:46:15,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 13:46:15,383 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:46:15,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:15,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1403376717, now seen corresponding path program 1 times [2024-11-13 13:46:15,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:15,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253116073] [2024-11-13 13:46:15,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:15,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:15,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:15,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:46:15,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:15,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253116073] [2024-11-13 13:46:15,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253116073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:46:15,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:46:15,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:46:15,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169498019] [2024-11-13 13:46:15,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:46:15,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:46:15,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:15,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:46:15,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:46:15,531 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-13 13:46:15,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 181 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:15,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:15,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-13 13:46:15,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:15,920 INFO L124 PetriNetUnfolderBase]: 2095/3259 cut-off events. [2024-11-13 13:46:15,920 INFO L125 PetriNetUnfolderBase]: For 386/386 co-relation queries the response was YES. [2024-11-13 13:46:15,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6641 conditions, 3259 events. 2095/3259 cut-off events. For 386/386 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 17152 event pairs, 1813 based on Foata normal form. 0/2622 useless extension candidates. Maximal degree in co-relation 6025. Up to 2896 conditions per place. [2024-11-13 13:46:15,940 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 41 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2024-11-13 13:46:15,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 56 transitions, 265 flow [2024-11-13 13:46:15,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:46:15,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 13:46:15,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2024-11-13 13:46:15,942 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-11-13 13:46:15,942 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 181 flow. Second operand 5 states and 109 transitions. [2024-11-13 13:46:15,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 56 transitions, 265 flow [2024-11-13 13:46:15,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 56 transitions, 260 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 13:46:15,944 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 178 flow [2024-11-13 13:46:15,944 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2024-11-13 13:46:15,945 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 0 predicate places. [2024-11-13 13:46:15,945 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 178 flow [2024-11-13 13:46:15,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:15,945 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:15,945 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:46:15,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 13:46:15,946 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:46:15,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:15,946 INFO L85 PathProgramCache]: Analyzing trace with hash -815545567, now seen corresponding path program 1 times [2024-11-13 13:46:15,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:15,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339160294] [2024-11-13 13:46:15,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:15,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:15,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:16,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:46:16,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:16,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339160294] [2024-11-13 13:46:16,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339160294] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:46:16,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:46:16,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 13:46:16,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82139647] [2024-11-13 13:46:16,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:46:16,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:46:16,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:16,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:46:16,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:46:16,007 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-13 13:46:16,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:16,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:16,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-13 13:46:16,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:16,401 INFO L124 PetriNetUnfolderBase]: 1937/3073 cut-off events. [2024-11-13 13:46:16,401 INFO L125 PetriNetUnfolderBase]: For 424/424 co-relation queries the response was YES. [2024-11-13 13:46:16,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6348 conditions, 3073 events. 1937/3073 cut-off events. For 424/424 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 15635 event pairs, 695 based on Foata normal form. 71/2583 useless extension candidates. Maximal degree in co-relation 6070. Up to 2082 conditions per place. [2024-11-13 13:46:16,415 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 60 selfloop transitions, 2 changer transitions 1/71 dead transitions. [2024-11-13 13:46:16,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 71 transitions, 342 flow [2024-11-13 13:46:16,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:46:16,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:46:16,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-11-13 13:46:16,417 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5483870967741935 [2024-11-13 13:46:16,417 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 178 flow. Second operand 3 states and 102 transitions. [2024-11-13 13:46:16,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 71 transitions, 342 flow [2024-11-13 13:46:16,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 71 transitions, 331 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 13:46:16,419 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 178 flow [2024-11-13 13:46:16,419 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2024-11-13 13:46:16,420 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 0 predicate places. [2024-11-13 13:46:16,420 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 178 flow [2024-11-13 13:46:16,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:16,420 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:16,422 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:46:16,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 13:46:16,422 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:46:16,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:16,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1320594099, now seen corresponding path program 1 times [2024-11-13 13:46:16,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:16,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51361867] [2024-11-13 13:46:16,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:16,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:16,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:46:16,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:16,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51361867] [2024-11-13 13:46:16,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51361867] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:46:16,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:46:16,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:46:16,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135348121] [2024-11-13 13:46:16,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:46:16,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:46:16,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:16,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:46:16,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:46:16,497 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-13 13:46:16,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:16,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:16,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-13 13:46:16,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:16,818 INFO L124 PetriNetUnfolderBase]: 1665/2611 cut-off events. [2024-11-13 13:46:16,819 INFO L125 PetriNetUnfolderBase]: For 507/512 co-relation queries the response was YES. [2024-11-13 13:46:16,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5820 conditions, 2611 events. 1665/2611 cut-off events. For 507/512 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 12397 event pairs, 717 based on Foata normal form. 15/2267 useless extension candidates. Maximal degree in co-relation 5785. Up to 2249 conditions per place. [2024-11-13 13:46:16,837 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 55 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2024-11-13 13:46:16,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 66 transitions, 320 flow [2024-11-13 13:46:16,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:46:16,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:46:16,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-11-13 13:46:16,839 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.510752688172043 [2024-11-13 13:46:16,839 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 178 flow. Second operand 3 states and 95 transitions. [2024-11-13 13:46:16,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 66 transitions, 320 flow [2024-11-13 13:46:16,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 66 transitions, 318 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 13:46:16,841 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 199 flow [2024-11-13 13:46:16,841 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=199, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-11-13 13:46:16,842 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 1 predicate places. [2024-11-13 13:46:16,842 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 199 flow [2024-11-13 13:46:16,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:16,842 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:16,842 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:46:16,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 13:46:16,842 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:46:16,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:16,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1888856564, now seen corresponding path program 1 times [2024-11-13 13:46:16,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:16,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535969610] [2024-11-13 13:46:16,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:16,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:16,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:17,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:46:17,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:17,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535969610] [2024-11-13 13:46:17,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535969610] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:46:17,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:46:17,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:46:17,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004823379] [2024-11-13 13:46:17,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:46:17,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:46:17,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:17,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:46:17,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:46:17,024 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-13 13:46:17,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 199 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:17,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:17,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-13 13:46:17,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:17,467 INFO L124 PetriNetUnfolderBase]: 1906/3090 cut-off events. [2024-11-13 13:46:17,467 INFO L125 PetriNetUnfolderBase]: For 1627/1627 co-relation queries the response was YES. [2024-11-13 13:46:17,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7348 conditions, 3090 events. 1906/3090 cut-off events. For 1627/1627 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 15481 event pairs, 1453 based on Foata normal form. 64/2789 useless extension candidates. Maximal degree in co-relation 7311. Up to 2352 conditions per place. [2024-11-13 13:46:17,485 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 46 selfloop transitions, 3 changer transitions 19/76 dead transitions. [2024-11-13 13:46:17,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 76 transitions, 397 flow [2024-11-13 13:46:17,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:46:17,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:46:17,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-11-13 13:46:17,487 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49193548387096775 [2024-11-13 13:46:17,487 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 199 flow. Second operand 4 states and 122 transitions. [2024-11-13 13:46:17,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 76 transitions, 397 flow [2024-11-13 13:46:17,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 76 transitions, 372 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-11-13 13:46:17,491 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 193 flow [2024-11-13 13:46:17,491 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=193, PETRI_PLACES=64, PETRI_TRANSITIONS=57} [2024-11-13 13:46:17,493 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 3 predicate places. [2024-11-13 13:46:17,493 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 193 flow [2024-11-13 13:46:17,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:17,493 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:17,493 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:46:17,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 13:46:17,493 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:46:17,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:17,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1997902043, now seen corresponding path program 1 times [2024-11-13 13:46:17,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:17,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634687618] [2024-11-13 13:46:17,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:17,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:17,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:17,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:46:17,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:17,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634687618] [2024-11-13 13:46:17,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634687618] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:46:17,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542489032] [2024-11-13 13:46:17,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:17,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:46:17,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46ba25b-2400-46a9-b204-c42246106745/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:46:17,875 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46ba25b-2400-46a9-b204-c42246106745/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:46:17,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46ba25b-2400-46a9-b204-c42246106745/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:46:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:18,013 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 13:46:18,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:46:18,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:46:18,163 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:46:18,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542489032] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:46:18,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:46:18,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-13 13:46:18,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17523362] [2024-11-13 13:46:18,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:46:18,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:46:18,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:18,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:46:18,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:46:18,188 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-13 13:46:18,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 193 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:18,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:18,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-13 13:46:18,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:18,537 INFO L124 PetriNetUnfolderBase]: 1256/2044 cut-off events. [2024-11-13 13:46:18,537 INFO L125 PetriNetUnfolderBase]: For 577/577 co-relation queries the response was YES. [2024-11-13 13:46:18,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4606 conditions, 2044 events. 1256/2044 cut-off events. For 577/577 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 9674 event pairs, 929 based on Foata normal form. 0/1890 useless extension candidates. Maximal degree in co-relation 4567. Up to 1767 conditions per place. [2024-11-13 13:46:18,552 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 43 selfloop transitions, 4 changer transitions 0/55 dead transitions. [2024-11-13 13:46:18,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 55 transitions, 279 flow [2024-11-13 13:46:18,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:46:18,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:46:18,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-11-13 13:46:18,554 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-11-13 13:46:18,555 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 193 flow. Second operand 4 states and 100 transitions. [2024-11-13 13:46:18,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 55 transitions, 279 flow [2024-11-13 13:46:18,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 55 transitions, 272 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-13 13:46:18,557 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 186 flow [2024-11-13 13:46:18,558 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=62, PETRI_TRANSITIONS=55} [2024-11-13 13:46:18,560 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 1 predicate places. [2024-11-13 13:46:18,561 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 186 flow [2024-11-13 13:46:18,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:18,562 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:18,562 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:46:18,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46ba25b-2400-46a9-b204-c42246106745/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 13:46:18,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46ba25b-2400-46a9-b204-c42246106745/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:46:18,763 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:46:18,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:18,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1997902044, now seen corresponding path program 1 times [2024-11-13 13:46:18,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:18,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898937929] [2024-11-13 13:46:18,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:18,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:18,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:18,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:46:18,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:18,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898937929] [2024-11-13 13:46:18,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898937929] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:46:18,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:46:18,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:46:18,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076960696] [2024-11-13 13:46:18,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:46:18,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:46:18,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:18,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:46:18,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:46:18,900 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-13 13:46:18,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 186 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:18,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:18,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-13 13:46:18,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:19,179 INFO L124 PetriNetUnfolderBase]: 902/1526 cut-off events. [2024-11-13 13:46:19,179 INFO L125 PetriNetUnfolderBase]: For 352/352 co-relation queries the response was YES. [2024-11-13 13:46:19,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3299 conditions, 1526 events. 902/1526 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 7086 event pairs, 653 based on Foata normal form. 97/1538 useless extension candidates. Maximal degree in co-relation 3259. Up to 1271 conditions per place. [2024-11-13 13:46:19,189 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 42 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2024-11-13 13:46:19,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 53 transitions, 270 flow [2024-11-13 13:46:19,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:46:19,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:46:19,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions. [2024-11-13 13:46:19,192 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-11-13 13:46:19,193 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 186 flow. Second operand 4 states and 90 transitions. [2024-11-13 13:46:19,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 53 transitions, 270 flow [2024-11-13 13:46:19,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 53 transitions, 264 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 13:46:19,195 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 180 flow [2024-11-13 13:46:19,195 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2024-11-13 13:46:19,196 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 0 predicate places. [2024-11-13 13:46:19,197 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 180 flow [2024-11-13 13:46:19,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:19,197 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:19,197 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:46:19,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 13:46:19,198 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:46:19,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:19,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1108900889, now seen corresponding path program 1 times [2024-11-13 13:46:19,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:19,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310778111] [2024-11-13 13:46:19,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:19,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:19,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:20,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:46:20,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:20,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310778111] [2024-11-13 13:46:20,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310778111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:46:20,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:46:20,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:46:20,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829525043] [2024-11-13 13:46:20,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:46:20,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:46:20,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:20,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:46:20,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:46:20,629 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-13 13:46:20,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 180 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:20,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:20,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-13 13:46:20,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:21,476 INFO L124 PetriNetUnfolderBase]: 1304/2220 cut-off events. [2024-11-13 13:46:21,476 INFO L125 PetriNetUnfolderBase]: For 461/461 co-relation queries the response was YES. [2024-11-13 13:46:21,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4813 conditions, 2220 events. 1304/2220 cut-off events. For 461/461 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 11720 event pairs, 135 based on Foata normal form. 1/2156 useless extension candidates. Maximal degree in co-relation 4774. Up to 1406 conditions per place. [2024-11-13 13:46:21,491 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 108 selfloop transitions, 26 changer transitions 3/144 dead transitions. [2024-11-13 13:46:21,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 144 transitions, 701 flow [2024-11-13 13:46:21,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 13:46:21,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-13 13:46:21,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 307 transitions. [2024-11-13 13:46:21,495 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41263440860215056 [2024-11-13 13:46:21,495 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 180 flow. Second operand 12 states and 307 transitions. [2024-11-13 13:46:21,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 144 transitions, 701 flow [2024-11-13 13:46:21,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 144 transitions, 697 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 13:46:21,500 INFO L231 Difference]: Finished difference. Result has 75 places, 75 transitions, 314 flow [2024-11-13 13:46:21,501 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=314, PETRI_PLACES=75, PETRI_TRANSITIONS=75} [2024-11-13 13:46:21,501 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 14 predicate places. [2024-11-13 13:46:21,501 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 75 transitions, 314 flow [2024-11-13 13:46:21,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:21,501 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:21,502 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:46:21,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 13:46:21,502 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:46:21,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:21,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1167708405, now seen corresponding path program 2 times [2024-11-13 13:46:21,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:21,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137204062] [2024-11-13 13:46:21,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:21,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:21,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:22,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:46:22,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:22,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137204062] [2024-11-13 13:46:22,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137204062] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:46:22,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:46:22,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:46:22,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695191611] [2024-11-13 13:46:22,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:46:22,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:46:22,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:22,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:46:22,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:46:22,754 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-13 13:46:22,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 75 transitions, 314 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:22,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:22,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-13 13:46:22,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:23,633 INFO L124 PetriNetUnfolderBase]: 1474/2573 cut-off events. [2024-11-13 13:46:23,633 INFO L125 PetriNetUnfolderBase]: For 1567/1567 co-relation queries the response was YES. [2024-11-13 13:46:23,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6732 conditions, 2573 events. 1474/2573 cut-off events. For 1567/1567 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 14243 event pairs, 373 based on Foata normal form. 1/2495 useless extension candidates. Maximal degree in co-relation 6688. Up to 1741 conditions per place. [2024-11-13 13:46:23,652 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 107 selfloop transitions, 34 changer transitions 3/151 dead transitions. [2024-11-13 13:46:23,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 151 transitions, 889 flow [2024-11-13 13:46:23,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:46:23,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 13:46:23,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 281 transitions. [2024-11-13 13:46:23,655 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4120234604105572 [2024-11-13 13:46:23,655 INFO L175 Difference]: Start difference. First operand has 75 places, 75 transitions, 314 flow. Second operand 11 states and 281 transitions. [2024-11-13 13:46:23,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 151 transitions, 889 flow [2024-11-13 13:46:23,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 151 transitions, 882 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 13:46:23,661 INFO L231 Difference]: Finished difference. Result has 90 places, 96 transitions, 539 flow [2024-11-13 13:46:23,661 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=539, PETRI_PLACES=90, PETRI_TRANSITIONS=96} [2024-11-13 13:46:23,662 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 29 predicate places. [2024-11-13 13:46:23,662 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 96 transitions, 539 flow [2024-11-13 13:46:23,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:23,663 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:23,663 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:46:23,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 13:46:23,663 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:46:23,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:23,664 INFO L85 PathProgramCache]: Analyzing trace with hash 470773477, now seen corresponding path program 3 times [2024-11-13 13:46:23,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:23,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644759727] [2024-11-13 13:46:23,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:23,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:23,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:24,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:46:24,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:24,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644759727] [2024-11-13 13:46:24,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644759727] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:46:24,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:46:24,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:46:24,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482850942] [2024-11-13 13:46:24,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:46:24,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:46:24,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:24,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:46:24,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:46:24,853 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-13 13:46:24,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 96 transitions, 539 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:24,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:24,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-13 13:46:24,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:25,912 INFO L124 PetriNetUnfolderBase]: 1641/2889 cut-off events. [2024-11-13 13:46:25,912 INFO L125 PetriNetUnfolderBase]: For 3634/3646 co-relation queries the response was YES. [2024-11-13 13:46:25,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8524 conditions, 2889 events. 1641/2889 cut-off events. For 3634/3646 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 16848 event pairs, 292 based on Foata normal form. 4/2796 useless extension candidates. Maximal degree in co-relation 8472. Up to 1750 conditions per place. [2024-11-13 13:46:25,937 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 122 selfloop transitions, 44 changer transitions 3/176 dead transitions. [2024-11-13 13:46:25,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 176 transitions, 1184 flow [2024-11-13 13:46:25,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 13:46:25,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-13 13:46:25,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 311 transitions. [2024-11-13 13:46:25,940 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41801075268817206 [2024-11-13 13:46:25,940 INFO L175 Difference]: Start difference. First operand has 90 places, 96 transitions, 539 flow. Second operand 12 states and 311 transitions. [2024-11-13 13:46:25,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 176 transitions, 1184 flow [2024-11-13 13:46:25,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 176 transitions, 1165 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-11-13 13:46:25,953 INFO L231 Difference]: Finished difference. Result has 103 places, 105 transitions, 692 flow [2024-11-13 13:46:25,954 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=692, PETRI_PLACES=103, PETRI_TRANSITIONS=105} [2024-11-13 13:46:25,954 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 42 predicate places. [2024-11-13 13:46:25,954 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 105 transitions, 692 flow [2024-11-13 13:46:25,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:25,955 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:25,955 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:46:25,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-13 13:46:25,955 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:46:25,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:25,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1263622883, now seen corresponding path program 4 times [2024-11-13 13:46:25,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:25,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137939239] [2024-11-13 13:46:25,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:25,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:25,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:27,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:46:27,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:27,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137939239] [2024-11-13 13:46:27,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137939239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:46:27,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:46:27,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:46:27,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456358353] [2024-11-13 13:46:27,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:46:27,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:46:27,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:27,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:46:27,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:46:27,129 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-13 13:46:27,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 105 transitions, 692 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:27,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:27,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-13 13:46:27,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:28,143 INFO L124 PetriNetUnfolderBase]: 1745/3111 cut-off events. [2024-11-13 13:46:28,143 INFO L125 PetriNetUnfolderBase]: For 5800/5812 co-relation queries the response was YES. [2024-11-13 13:46:28,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9853 conditions, 3111 events. 1745/3111 cut-off events. For 5800/5812 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 18607 event pairs, 396 based on Foata normal form. 4/3008 useless extension candidates. Maximal degree in co-relation 9797. Up to 2087 conditions per place. [2024-11-13 13:46:28,172 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 129 selfloop transitions, 40 changer transitions 3/179 dead transitions. [2024-11-13 13:46:28,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 179 transitions, 1343 flow [2024-11-13 13:46:28,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 13:46:28,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-13 13:46:28,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 307 transitions. [2024-11-13 13:46:28,176 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41263440860215056 [2024-11-13 13:46:28,176 INFO L175 Difference]: Start difference. First operand has 103 places, 105 transitions, 692 flow. Second operand 12 states and 307 transitions. [2024-11-13 13:46:28,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 179 transitions, 1343 flow [2024-11-13 13:46:28,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 179 transitions, 1267 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-11-13 13:46:28,199 INFO L231 Difference]: Finished difference. Result has 111 places, 111 transitions, 771 flow [2024-11-13 13:46:28,200 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=771, PETRI_PLACES=111, PETRI_TRANSITIONS=111} [2024-11-13 13:46:28,200 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 50 predicate places. [2024-11-13 13:46:28,201 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 111 transitions, 771 flow [2024-11-13 13:46:28,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:28,201 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:28,201 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:46:28,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-13 13:46:28,201 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:46:28,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:28,202 INFO L85 PathProgramCache]: Analyzing trace with hash 301545705, now seen corresponding path program 5 times [2024-11-13 13:46:28,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:28,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970604255] [2024-11-13 13:46:28,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:28,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:28,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:29,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:46:29,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:29,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970604255] [2024-11-13 13:46:29,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970604255] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:46:29,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:46:29,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:46:29,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922973531] [2024-11-13 13:46:29,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:46:29,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:46:29,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:29,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:46:29,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:46:29,150 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-13 13:46:29,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 111 transitions, 771 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:29,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:29,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-13 13:46:29,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:30,187 INFO L124 PetriNetUnfolderBase]: 1745/3109 cut-off events. [2024-11-13 13:46:30,187 INFO L125 PetriNetUnfolderBase]: For 7577/7601 co-relation queries the response was YES. [2024-11-13 13:46:30,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10254 conditions, 3109 events. 1745/3109 cut-off events. For 7577/7601 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 18661 event pairs, 410 based on Foata normal form. 16/3015 useless extension candidates. Maximal degree in co-relation 10194. Up to 2171 conditions per place. [2024-11-13 13:46:30,216 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 125 selfloop transitions, 39 changer transitions 3/174 dead transitions. [2024-11-13 13:46:30,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 174 transitions, 1375 flow [2024-11-13 13:46:30,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 13:46:30,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-13 13:46:30,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 298 transitions. [2024-11-13 13:46:30,218 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40053763440860213 [2024-11-13 13:46:30,218 INFO L175 Difference]: Start difference. First operand has 111 places, 111 transitions, 771 flow. Second operand 12 states and 298 transitions. [2024-11-13 13:46:30,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 174 transitions, 1375 flow [2024-11-13 13:46:30,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 174 transitions, 1281 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-11-13 13:46:30,246 INFO L231 Difference]: Finished difference. Result has 117 places, 114 transitions, 800 flow [2024-11-13 13:46:30,247 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=800, PETRI_PLACES=117, PETRI_TRANSITIONS=114} [2024-11-13 13:46:30,247 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 56 predicate places. [2024-11-13 13:46:30,247 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 114 transitions, 800 flow [2024-11-13 13:46:30,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:30,247 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:30,248 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:46:30,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-13 13:46:30,248 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:46:30,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:30,248 INFO L85 PathProgramCache]: Analyzing trace with hash -826939953, now seen corresponding path program 6 times [2024-11-13 13:46:30,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:30,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248691779] [2024-11-13 13:46:30,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:30,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:30,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:31,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:46:31,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:31,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248691779] [2024-11-13 13:46:31,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248691779] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:46:31,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:46:31,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:46:31,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863933729] [2024-11-13 13:46:31,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:46:31,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:46:31,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:31,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:46:31,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:46:31,484 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-13 13:46:31,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 114 transitions, 800 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:31,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:31,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-13 13:46:31,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:32,453 INFO L124 PetriNetUnfolderBase]: 1867/3349 cut-off events. [2024-11-13 13:46:32,453 INFO L125 PetriNetUnfolderBase]: For 8357/8381 co-relation queries the response was YES. [2024-11-13 13:46:32,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11107 conditions, 3349 events. 1867/3349 cut-off events. For 8357/8381 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 20501 event pairs, 614 based on Foata normal form. 7/3232 useless extension candidates. Maximal degree in co-relation 11044. Up to 2438 conditions per place. [2024-11-13 13:46:32,477 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 132 selfloop transitions, 37 changer transitions 3/179 dead transitions. [2024-11-13 13:46:32,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 179 transitions, 1499 flow [2024-11-13 13:46:32,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:46:32,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 13:46:32,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 280 transitions. [2024-11-13 13:46:32,482 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-11-13 13:46:32,482 INFO L175 Difference]: Start difference. First operand has 117 places, 114 transitions, 800 flow. Second operand 11 states and 280 transitions. [2024-11-13 13:46:32,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 179 transitions, 1499 flow [2024-11-13 13:46:32,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 179 transitions, 1409 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-11-13 13:46:32,514 INFO L231 Difference]: Finished difference. Result has 123 places, 125 transitions, 945 flow [2024-11-13 13:46:32,514 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=945, PETRI_PLACES=123, PETRI_TRANSITIONS=125} [2024-11-13 13:46:32,517 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 62 predicate places. [2024-11-13 13:46:32,517 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 125 transitions, 945 flow [2024-11-13 13:46:32,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:32,518 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:32,518 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:46:32,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-13 13:46:32,518 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:46:32,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:32,519 INFO L85 PathProgramCache]: Analyzing trace with hash -331291211, now seen corresponding path program 7 times [2024-11-13 13:46:32,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:32,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461839426] [2024-11-13 13:46:32,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:32,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:32,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:33,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:46:33,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:33,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461839426] [2024-11-13 13:46:33,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461839426] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:46:33,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:46:33,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:46:33,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501642315] [2024-11-13 13:46:33,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:46:33,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:46:33,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:33,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:46:33,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:46:33,572 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-13 13:46:33,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 125 transitions, 945 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:33,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:33,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-13 13:46:33,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:34,613 INFO L124 PetriNetUnfolderBase]: 2007/3588 cut-off events. [2024-11-13 13:46:34,613 INFO L125 PetriNetUnfolderBase]: For 13903/13939 co-relation queries the response was YES. [2024-11-13 13:46:34,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12684 conditions, 3588 events. 2007/3588 cut-off events. For 13903/13939 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 22263 event pairs, 606 based on Foata normal form. 9/3475 useless extension candidates. Maximal degree in co-relation 12616. Up to 2643 conditions per place. [2024-11-13 13:46:34,646 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 141 selfloop transitions, 37 changer transitions 3/188 dead transitions. [2024-11-13 13:46:34,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 188 transitions, 1680 flow [2024-11-13 13:46:34,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:46:34,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 13:46:34,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 277 transitions. [2024-11-13 13:46:34,649 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40615835777126097 [2024-11-13 13:46:34,649 INFO L175 Difference]: Start difference. First operand has 123 places, 125 transitions, 945 flow. Second operand 11 states and 277 transitions. [2024-11-13 13:46:34,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 188 transitions, 1680 flow [2024-11-13 13:46:34,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 188 transitions, 1592 flow, removed 36 selfloop flow, removed 2 redundant places. [2024-11-13 13:46:34,692 INFO L231 Difference]: Finished difference. Result has 135 places, 134 transitions, 1092 flow [2024-11-13 13:46:34,692 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=857, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1092, PETRI_PLACES=135, PETRI_TRANSITIONS=134} [2024-11-13 13:46:34,693 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 74 predicate places. [2024-11-13 13:46:34,693 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 134 transitions, 1092 flow [2024-11-13 13:46:34,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:34,693 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:34,693 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:46:34,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-13 13:46:34,693 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:46:34,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:34,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1631710589, now seen corresponding path program 8 times [2024-11-13 13:46:34,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:34,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592197470] [2024-11-13 13:46:34,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:34,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:34,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:35,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:46:35,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:35,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592197470] [2024-11-13 13:46:35,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592197470] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:46:35,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:46:35,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:46:35,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589863710] [2024-11-13 13:46:35,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:46:35,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:46:35,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:35,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:46:35,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:46:35,590 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-13 13:46:35,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 134 transitions, 1092 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:35,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:35,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-13 13:46:35,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:36,581 INFO L124 PetriNetUnfolderBase]: 2139/3846 cut-off events. [2024-11-13 13:46:36,582 INFO L125 PetriNetUnfolderBase]: For 22314/22362 co-relation queries the response was YES. [2024-11-13 13:46:36,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14462 conditions, 3846 events. 2139/3846 cut-off events. For 22314/22362 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 24558 event pairs, 663 based on Foata normal form. 11/3730 useless extension candidates. Maximal degree in co-relation 14389. Up to 2847 conditions per place. [2024-11-13 13:46:36,619 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 152 selfloop transitions, 37 changer transitions 3/199 dead transitions. [2024-11-13 13:46:36,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 199 transitions, 1881 flow [2024-11-13 13:46:36,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:46:36,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 13:46:36,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 279 transitions. [2024-11-13 13:46:36,621 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-11-13 13:46:36,621 INFO L175 Difference]: Start difference. First operand has 135 places, 134 transitions, 1092 flow. Second operand 11 states and 279 transitions. [2024-11-13 13:46:36,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 199 transitions, 1881 flow [2024-11-13 13:46:36,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 199 transitions, 1751 flow, removed 47 selfloop flow, removed 5 redundant places. [2024-11-13 13:46:36,684 INFO L231 Difference]: Finished difference. Result has 143 places, 143 transitions, 1178 flow [2024-11-13 13:46:36,684 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=962, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1178, PETRI_PLACES=143, PETRI_TRANSITIONS=143} [2024-11-13 13:46:36,685 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 82 predicate places. [2024-11-13 13:46:36,685 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 143 transitions, 1178 flow [2024-11-13 13:46:36,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:36,686 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:36,686 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:46:36,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-13 13:46:36,686 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:46:36,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:36,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1147405165, now seen corresponding path program 9 times [2024-11-13 13:46:36,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:36,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516215886] [2024-11-13 13:46:36,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:36,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:36,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:37,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:46:37,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:37,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516215886] [2024-11-13 13:46:37,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516215886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:46:37,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:46:37,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:46:37,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988273035] [2024-11-13 13:46:37,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:46:37,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:46:37,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:37,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:46:37,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:46:37,598 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-13 13:46:37,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 143 transitions, 1178 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:37,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:37,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-13 13:46:37,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:38,601 INFO L124 PetriNetUnfolderBase]: 2305/4131 cut-off events. [2024-11-13 13:46:38,601 INFO L125 PetriNetUnfolderBase]: For 29056/29136 co-relation queries the response was YES. [2024-11-13 13:46:38,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16260 conditions, 4131 events. 2305/4131 cut-off events. For 29056/29136 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 26811 event pairs, 722 based on Foata normal form. 9/3998 useless extension candidates. Maximal degree in co-relation 16183. Up to 3056 conditions per place. [2024-11-13 13:46:38,663 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 160 selfloop transitions, 38 changer transitions 3/208 dead transitions. [2024-11-13 13:46:38,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 208 transitions, 2018 flow [2024-11-13 13:46:38,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:46:38,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 13:46:38,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 282 transitions. [2024-11-13 13:46:38,665 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-11-13 13:46:38,665 INFO L175 Difference]: Start difference. First operand has 143 places, 143 transitions, 1178 flow. Second operand 11 states and 282 transitions. [2024-11-13 13:46:38,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 208 transitions, 2018 flow [2024-11-13 13:46:38,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 208 transitions, 1886 flow, removed 48 selfloop flow, removed 5 redundant places. [2024-11-13 13:46:38,732 INFO L231 Difference]: Finished difference. Result has 151 places, 150 transitions, 1280 flow [2024-11-13 13:46:38,733 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1046, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1280, PETRI_PLACES=151, PETRI_TRANSITIONS=150} [2024-11-13 13:46:38,733 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 90 predicate places. [2024-11-13 13:46:38,733 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 150 transitions, 1280 flow [2024-11-13 13:46:38,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:38,734 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:38,734 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:46:38,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-13 13:46:38,734 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:46:38,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:38,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1829688955, now seen corresponding path program 10 times [2024-11-13 13:46:38,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:38,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887130135] [2024-11-13 13:46:38,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:38,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:38,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:39,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:46:39,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:39,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887130135] [2024-11-13 13:46:39,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887130135] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:46:39,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:46:39,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:46:39,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361538096] [2024-11-13 13:46:39,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:46:39,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:46:39,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:39,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:46:39,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:46:39,434 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-13 13:46:39,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 150 transitions, 1280 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:39,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:39,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-13 13:46:39,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:40,405 INFO L124 PetriNetUnfolderBase]: 2366/4235 cut-off events. [2024-11-13 13:46:40,405 INFO L125 PetriNetUnfolderBase]: For 34293/34413 co-relation queries the response was YES. [2024-11-13 13:46:40,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17046 conditions, 4235 events. 2366/4235 cut-off events. For 34293/34413 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 27586 event pairs, 824 based on Foata normal form. 23/4118 useless extension candidates. Maximal degree in co-relation 16965. Up to 3295 conditions per place. [2024-11-13 13:46:40,433 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 154 selfloop transitions, 37 changer transitions 4/202 dead transitions. [2024-11-13 13:46:40,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 202 transitions, 1968 flow [2024-11-13 13:46:40,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:46:40,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 13:46:40,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 269 transitions. [2024-11-13 13:46:40,434 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3944281524926686 [2024-11-13 13:46:40,434 INFO L175 Difference]: Start difference. First operand has 151 places, 150 transitions, 1280 flow. Second operand 11 states and 269 transitions. [2024-11-13 13:46:40,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 202 transitions, 1968 flow [2024-11-13 13:46:40,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 202 transitions, 1824 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-11-13 13:46:40,488 INFO L231 Difference]: Finished difference. Result has 158 places, 156 transitions, 1307 flow [2024-11-13 13:46:40,489 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1136, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1307, PETRI_PLACES=158, PETRI_TRANSITIONS=156} [2024-11-13 13:46:40,489 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 97 predicate places. [2024-11-13 13:46:40,489 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 156 transitions, 1307 flow [2024-11-13 13:46:40,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:40,490 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:40,490 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:46:40,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-13 13:46:40,490 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:46:40,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:40,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1365331351, now seen corresponding path program 11 times [2024-11-13 13:46:40,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:40,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954006380] [2024-11-13 13:46:40,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:40,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:40,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:41,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:46:41,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:41,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954006380] [2024-11-13 13:46:41,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954006380] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:46:41,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:46:41,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:46:41,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480513766] [2024-11-13 13:46:41,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:46:41,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:46:41,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:41,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:46:41,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:46:41,362 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-13 13:46:41,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 156 transitions, 1307 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:41,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:41,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-13 13:46:41,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:42,368 INFO L124 PetriNetUnfolderBase]: 2517/4479 cut-off events. [2024-11-13 13:46:42,369 INFO L125 PetriNetUnfolderBase]: For 35209/35289 co-relation queries the response was YES. [2024-11-13 13:46:42,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18050 conditions, 4479 events. 2517/4479 cut-off events. For 35209/35289 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 29543 event pairs, 856 based on Foata normal form. 29/4372 useless extension candidates. Maximal degree in co-relation 17965. Up to 3319 conditions per place. [2024-11-13 13:46:42,404 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 165 selfloop transitions, 43 changer transitions 3/218 dead transitions. [2024-11-13 13:46:42,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 218 transitions, 2177 flow [2024-11-13 13:46:42,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:46:42,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 13:46:42,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 280 transitions. [2024-11-13 13:46:42,406 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-11-13 13:46:42,406 INFO L175 Difference]: Start difference. First operand has 158 places, 156 transitions, 1307 flow. Second operand 11 states and 280 transitions. [2024-11-13 13:46:42,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 218 transitions, 2177 flow [2024-11-13 13:46:42,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 218 transitions, 2065 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-11-13 13:46:42,470 INFO L231 Difference]: Finished difference. Result has 165 places, 163 transitions, 1472 flow [2024-11-13 13:46:42,470 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1195, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1472, PETRI_PLACES=165, PETRI_TRANSITIONS=163} [2024-11-13 13:46:42,471 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 104 predicate places. [2024-11-13 13:46:42,471 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 163 transitions, 1472 flow [2024-11-13 13:46:42,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:42,471 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:42,471 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:46:42,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-13 13:46:42,472 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:46:42,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:42,472 INFO L85 PathProgramCache]: Analyzing trace with hash 176955423, now seen corresponding path program 12 times [2024-11-13 13:46:42,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:42,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861257169] [2024-11-13 13:46:42,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:42,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:42,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:43,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:46:43,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:43,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861257169] [2024-11-13 13:46:43,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861257169] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:46:43,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:46:43,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:46:43,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674463311] [2024-11-13 13:46:43,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:46:43,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:46:43,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:43,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:46:43,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:46:43,142 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-13 13:46:43,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 163 transitions, 1472 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:43,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:43,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-13 13:46:43,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:44,322 INFO L124 PetriNetUnfolderBase]: 2517/4483 cut-off events. [2024-11-13 13:46:44,322 INFO L125 PetriNetUnfolderBase]: For 41879/41941 co-relation queries the response was YES. [2024-11-13 13:46:44,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18682 conditions, 4483 events. 2517/4483 cut-off events. For 41879/41941 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 29577 event pairs, 878 based on Foata normal form. 19/4360 useless extension candidates. Maximal degree in co-relation 18593. Up to 3477 conditions per place. [2024-11-13 13:46:44,351 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 170 selfloop transitions, 38 changer transitions 4/219 dead transitions. [2024-11-13 13:46:44,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 219 transitions, 2223 flow [2024-11-13 13:46:44,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:46:44,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 13:46:44,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 276 transitions. [2024-11-13 13:46:44,353 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4046920821114369 [2024-11-13 13:46:44,353 INFO L175 Difference]: Start difference. First operand has 165 places, 163 transitions, 1472 flow. Second operand 11 states and 276 transitions. [2024-11-13 13:46:44,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 219 transitions, 2223 flow [2024-11-13 13:46:44,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 219 transitions, 2053 flow, removed 64 selfloop flow, removed 6 redundant places. [2024-11-13 13:46:44,455 INFO L231 Difference]: Finished difference. Result has 171 places, 167 transitions, 1431 flow [2024-11-13 13:46:44,456 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1302, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1431, PETRI_PLACES=171, PETRI_TRANSITIONS=167} [2024-11-13 13:46:44,456 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 110 predicate places. [2024-11-13 13:46:44,456 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 167 transitions, 1431 flow [2024-11-13 13:46:44,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:44,456 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:44,456 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:46:44,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-13 13:46:44,457 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:46:44,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:44,457 INFO L85 PathProgramCache]: Analyzing trace with hash -2055377209, now seen corresponding path program 13 times [2024-11-13 13:46:44,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:44,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758617103] [2024-11-13 13:46:44,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:44,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:45,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:46:45,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:45,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758617103] [2024-11-13 13:46:45,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758617103] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:46:45,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:46:45,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:46:45,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177272779] [2024-11-13 13:46:45,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:46:45,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:46:45,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:45,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:46:45,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:46:45,147 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-13 13:46:45,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 167 transitions, 1431 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:45,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:45,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-13 13:46:45,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:46,202 INFO L124 PetriNetUnfolderBase]: 2517/4475 cut-off events. [2024-11-13 13:46:46,202 INFO L125 PetriNetUnfolderBase]: For 36790/36874 co-relation queries the response was YES. [2024-11-13 13:46:46,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18143 conditions, 4475 events. 2517/4475 cut-off events. For 36790/36874 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 29530 event pairs, 882 based on Foata normal form. 35/4376 useless extension candidates. Maximal degree in co-relation 18051. Up to 3473 conditions per place. [2024-11-13 13:46:46,239 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 168 selfloop transitions, 42 changer transitions 4/221 dead transitions. [2024-11-13 13:46:46,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 221 transitions, 2150 flow [2024-11-13 13:46:46,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:46:46,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 13:46:46,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 275 transitions. [2024-11-13 13:46:46,241 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-11-13 13:46:46,241 INFO L175 Difference]: Start difference. First operand has 171 places, 167 transitions, 1431 flow. Second operand 11 states and 275 transitions. [2024-11-13 13:46:46,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 221 transitions, 2150 flow [2024-11-13 13:46:46,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 221 transitions, 2042 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-11-13 13:46:46,328 INFO L231 Difference]: Finished difference. Result has 175 places, 171 transitions, 1471 flow [2024-11-13 13:46:46,329 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1323, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1471, PETRI_PLACES=175, PETRI_TRANSITIONS=171} [2024-11-13 13:46:46,329 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 114 predicate places. [2024-11-13 13:46:46,329 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 171 transitions, 1471 flow [2024-11-13 13:46:46,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:46,329 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:46,330 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:46:46,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-13 13:46:46,330 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:46:46,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:46,330 INFO L85 PathProgramCache]: Analyzing trace with hash 542043817, now seen corresponding path program 14 times [2024-11-13 13:46:46,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:46,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620542129] [2024-11-13 13:46:46,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:46,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:46,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:47,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:46:47,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:47,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620542129] [2024-11-13 13:46:47,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620542129] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:46:47,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:46:47,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:46:47,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046300627] [2024-11-13 13:46:47,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:46:47,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:46:47,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:47,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:46:47,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:46:47,126 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-13 13:46:47,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 171 transitions, 1471 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:47,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:47,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-13 13:46:47,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:47,997 INFO L124 PetriNetUnfolderBase]: 2553/4541 cut-off events. [2024-11-13 13:46:47,997 INFO L125 PetriNetUnfolderBase]: For 37036/37120 co-relation queries the response was YES. [2024-11-13 13:46:48,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18317 conditions, 4541 events. 2553/4541 cut-off events. For 37036/37120 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 30160 event pairs, 944 based on Foata normal form. 35/4430 useless extension candidates. Maximal degree in co-relation 18223. Up to 3607 conditions per place. [2024-11-13 13:46:48,035 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 172 selfloop transitions, 38 changer transitions 3/220 dead transitions. [2024-11-13 13:46:48,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 220 transitions, 2165 flow [2024-11-13 13:46:48,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:46:48,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 13:46:48,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 269 transitions. [2024-11-13 13:46:48,036 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3944281524926686 [2024-11-13 13:46:48,036 INFO L175 Difference]: Start difference. First operand has 175 places, 171 transitions, 1471 flow. Second operand 11 states and 269 transitions. [2024-11-13 13:46:48,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 220 transitions, 2165 flow [2024-11-13 13:46:48,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 220 transitions, 2039 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-11-13 13:46:48,112 INFO L231 Difference]: Finished difference. Result has 179 places, 174 transitions, 1473 flow [2024-11-13 13:46:48,112 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1345, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1473, PETRI_PLACES=179, PETRI_TRANSITIONS=174} [2024-11-13 13:46:48,112 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 118 predicate places. [2024-11-13 13:46:48,112 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 174 transitions, 1473 flow [2024-11-13 13:46:48,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:48,113 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:48,113 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:46:48,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-13 13:46:48,113 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:46:48,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:48,113 INFO L85 PathProgramCache]: Analyzing trace with hash -113877679, now seen corresponding path program 15 times [2024-11-13 13:46:48,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:48,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651767319] [2024-11-13 13:46:48,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:48,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:48,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:48,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:46:48,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:48,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651767319] [2024-11-13 13:46:48,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651767319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:46:48,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:46:48,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:46:48,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192319797] [2024-11-13 13:46:48,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:46:48,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:46:48,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:48,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:46:48,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:46:48,751 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-13 13:46:48,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 174 transitions, 1473 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:48,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:48,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-13 13:46:48,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:49,627 INFO L124 PetriNetUnfolderBase]: 2553/4554 cut-off events. [2024-11-13 13:46:49,628 INFO L125 PetriNetUnfolderBase]: For 36400/36484 co-relation queries the response was YES. [2024-11-13 13:46:49,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18197 conditions, 4554 events. 2553/4554 cut-off events. For 36400/36484 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 30341 event pairs, 951 based on Foata normal form. 27/4435 useless extension candidates. Maximal degree in co-relation 18101. Up to 3620 conditions per place. [2024-11-13 13:46:49,674 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 174 selfloop transitions, 36 changer transitions 3/220 dead transitions. [2024-11-13 13:46:49,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 220 transitions, 2139 flow [2024-11-13 13:46:49,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:46:49,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 13:46:49,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 266 transitions. [2024-11-13 13:46:49,675 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-11-13 13:46:49,675 INFO L175 Difference]: Start difference. First operand has 179 places, 174 transitions, 1473 flow. Second operand 11 states and 266 transitions. [2024-11-13 13:46:49,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 220 transitions, 2139 flow [2024-11-13 13:46:49,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 220 transitions, 2029 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-11-13 13:46:49,740 INFO L231 Difference]: Finished difference. Result has 183 places, 176 transitions, 1461 flow [2024-11-13 13:46:49,740 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1365, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1461, PETRI_PLACES=183, PETRI_TRANSITIONS=176} [2024-11-13 13:46:49,740 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 122 predicate places. [2024-11-13 13:46:49,740 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 176 transitions, 1461 flow [2024-11-13 13:46:49,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:49,740 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:49,741 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:46:49,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-13 13:46:49,741 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:46:49,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:49,741 INFO L85 PathProgramCache]: Analyzing trace with hash -429586961, now seen corresponding path program 16 times [2024-11-13 13:46:49,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:49,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389678179] [2024-11-13 13:46:49,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:49,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:49,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:50,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:46:50,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:50,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389678179] [2024-11-13 13:46:50,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389678179] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:46:50,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:46:50,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:46:50,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604750246] [2024-11-13 13:46:50,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:46:50,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:46:50,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:50,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:46:50,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:46:50,514 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-13 13:46:50,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 176 transitions, 1461 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:50,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:50,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-13 13:46:50,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:51,523 INFO L124 PetriNetUnfolderBase]: 2792/5008 cut-off events. [2024-11-13 13:46:51,523 INFO L125 PetriNetUnfolderBase]: For 47389/47449 co-relation queries the response was YES. [2024-11-13 13:46:51,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20801 conditions, 5008 events. 2792/5008 cut-off events. For 47389/47449 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 34447 event pairs, 960 based on Foata normal form. 13/4864 useless extension candidates. Maximal degree in co-relation 20703. Up to 3655 conditions per place. [2024-11-13 13:46:51,565 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 201 selfloop transitions, 45 changer transitions 3/256 dead transitions. [2024-11-13 13:46:51,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 256 transitions, 2586 flow [2024-11-13 13:46:51,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 13:46:51,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-13 13:46:51,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 309 transitions. [2024-11-13 13:46:51,566 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4153225806451613 [2024-11-13 13:46:51,566 INFO L175 Difference]: Start difference. First operand has 183 places, 176 transitions, 1461 flow. Second operand 12 states and 309 transitions. [2024-11-13 13:46:51,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 256 transitions, 2586 flow [2024-11-13 13:46:51,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 256 transitions, 2516 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-11-13 13:46:51,641 INFO L231 Difference]: Finished difference. Result has 190 places, 188 transitions, 1734 flow [2024-11-13 13:46:51,641 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1391, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1734, PETRI_PLACES=190, PETRI_TRANSITIONS=188} [2024-11-13 13:46:51,642 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 129 predicate places. [2024-11-13 13:46:51,642 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 188 transitions, 1734 flow [2024-11-13 13:46:51,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:51,643 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:51,643 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:46:51,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-13 13:46:51,643 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:46:51,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:51,643 INFO L85 PathProgramCache]: Analyzing trace with hash 2173067, now seen corresponding path program 17 times [2024-11-13 13:46:51,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:51,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226036389] [2024-11-13 13:46:51,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:51,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:51,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:52,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:46:52,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:52,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226036389] [2024-11-13 13:46:52,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226036389] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:46:52,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:46:52,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:46:52,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963276169] [2024-11-13 13:46:52,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:46:52,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:46:52,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:52,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:46:52,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:46:52,353 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-13 13:46:52,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 188 transitions, 1734 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:52,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:52,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-13 13:46:52,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:53,544 INFO L124 PetriNetUnfolderBase]: 2993/5377 cut-off events. [2024-11-13 13:46:53,544 INFO L125 PetriNetUnfolderBase]: For 64972/65120 co-relation queries the response was YES. [2024-11-13 13:46:53,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23822 conditions, 5377 events. 2993/5377 cut-off events. For 64972/65120 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 37689 event pairs, 978 based on Foata normal form. 43/5260 useless extension candidates. Maximal degree in co-relation 23720. Up to 3842 conditions per place. [2024-11-13 13:46:53,582 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 199 selfloop transitions, 55 changer transitions 3/264 dead transitions. [2024-11-13 13:46:53,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 264 transitions, 2935 flow [2024-11-13 13:46:53,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 13:46:53,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-13 13:46:53,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 308 transitions. [2024-11-13 13:46:53,584 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41397849462365593 [2024-11-13 13:46:53,584 INFO L175 Difference]: Start difference. First operand has 190 places, 188 transitions, 1734 flow. Second operand 12 states and 308 transitions. [2024-11-13 13:46:53,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 264 transitions, 2935 flow [2024-11-13 13:46:53,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 264 transitions, 2705 flow, removed 97 selfloop flow, removed 5 redundant places. [2024-11-13 13:46:53,687 INFO L231 Difference]: Finished difference. Result has 200 places, 199 transitions, 1917 flow [2024-11-13 13:46:53,687 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1526, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1917, PETRI_PLACES=200, PETRI_TRANSITIONS=199} [2024-11-13 13:46:53,688 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 139 predicate places. [2024-11-13 13:46:53,688 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 199 transitions, 1917 flow [2024-11-13 13:46:53,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:53,688 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:53,688 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:46:53,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-13 13:46:53,688 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:46:53,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:53,689 INFO L85 PathProgramCache]: Analyzing trace with hash 2005480629, now seen corresponding path program 18 times [2024-11-13 13:46:53,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:53,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028444337] [2024-11-13 13:46:53,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:53,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:53,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:54,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:46:54,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:54,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028444337] [2024-11-13 13:46:54,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028444337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:46:54,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:46:54,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:46:54,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446927319] [2024-11-13 13:46:54,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:46:54,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:46:54,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:54,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:46:54,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:46:54,458 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-13 13:46:54,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 199 transitions, 1917 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:54,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:54,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-13 13:46:54,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:55,572 INFO L124 PetriNetUnfolderBase]: 3089/5543 cut-off events. [2024-11-13 13:46:55,572 INFO L125 PetriNetUnfolderBase]: For 77663/77781 co-relation queries the response was YES. [2024-11-13 13:46:55,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25332 conditions, 5543 events. 3089/5543 cut-off events. For 77663/77781 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 39108 event pairs, 1076 based on Foata normal form. 19/5401 useless extension candidates. Maximal degree in co-relation 25225. Up to 4114 conditions per place. [2024-11-13 13:46:55,643 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 208 selfloop transitions, 50 changer transitions 3/268 dead transitions. [2024-11-13 13:46:55,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 268 transitions, 3005 flow [2024-11-13 13:46:55,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 13:46:55,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-13 13:46:55,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 305 transitions. [2024-11-13 13:46:55,644 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4099462365591398 [2024-11-13 13:46:55,644 INFO L175 Difference]: Start difference. First operand has 200 places, 199 transitions, 1917 flow. Second operand 12 states and 305 transitions. [2024-11-13 13:46:55,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 268 transitions, 3005 flow [2024-11-13 13:46:55,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 268 transitions, 2788 flow, removed 83 selfloop flow, removed 7 redundant places. [2024-11-13 13:46:55,806 INFO L231 Difference]: Finished difference. Result has 207 places, 205 transitions, 1970 flow [2024-11-13 13:46:55,806 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1704, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1970, PETRI_PLACES=207, PETRI_TRANSITIONS=205} [2024-11-13 13:46:55,807 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 146 predicate places. [2024-11-13 13:46:55,807 INFO L471 AbstractCegarLoop]: Abstraction has has 207 places, 205 transitions, 1970 flow [2024-11-13 13:46:55,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:55,807 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:55,807 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:46:55,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-13 13:46:55,807 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:46:55,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:55,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1504320071, now seen corresponding path program 19 times [2024-11-13 13:46:55,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:55,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290684289] [2024-11-13 13:46:55,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:55,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:55,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:56,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:46:56,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:56,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290684289] [2024-11-13 13:46:56,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290684289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:46:56,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:46:56,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:46:56,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537169366] [2024-11-13 13:46:56,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:46:56,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:46:56,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:56,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:46:56,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:46:56,432 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-13 13:46:56,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 205 transitions, 1970 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:56,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:56,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-13 13:46:56,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:57,837 INFO L124 PetriNetUnfolderBase]: 3089/5561 cut-off events. [2024-11-13 13:46:57,837 INFO L125 PetriNetUnfolderBase]: For 76277/76361 co-relation queries the response was YES. [2024-11-13 13:46:57,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25156 conditions, 5561 events. 3089/5561 cut-off events. For 76277/76361 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 39355 event pairs, 1096 based on Foata normal form. 35/5433 useless extension candidates. Maximal degree in co-relation 25046. Up to 4191 conditions per place. [2024-11-13 13:46:57,893 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 205 selfloop transitions, 52 changer transitions 4/268 dead transitions. [2024-11-13 13:46:57,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 268 transitions, 2932 flow [2024-11-13 13:46:57,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 13:46:57,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-13 13:46:57,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 302 transitions. [2024-11-13 13:46:57,895 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40591397849462363 [2024-11-13 13:46:57,895 INFO L175 Difference]: Start difference. First operand has 207 places, 205 transitions, 1970 flow. Second operand 12 states and 302 transitions. [2024-11-13 13:46:57,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 268 transitions, 2932 flow [2024-11-13 13:46:58,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 268 transitions, 2773 flow, removed 53 selfloop flow, removed 8 redundant places. [2024-11-13 13:46:58,113 INFO L231 Difference]: Finished difference. Result has 212 places, 209 transitions, 1993 flow [2024-11-13 13:46:58,114 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1811, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1993, PETRI_PLACES=212, PETRI_TRANSITIONS=209} [2024-11-13 13:46:58,114 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 151 predicate places. [2024-11-13 13:46:58,114 INFO L471 AbstractCegarLoop]: Abstraction has has 212 places, 209 transitions, 1993 flow [2024-11-13 13:46:58,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:58,115 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:58,115 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:46:58,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-13 13:46:58,115 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:46:58,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:58,115 INFO L85 PathProgramCache]: Analyzing trace with hash -569070183, now seen corresponding path program 20 times [2024-11-13 13:46:58,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:58,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637436397] [2024-11-13 13:46:58,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:58,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:58,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:58,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:46:58,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:58,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637436397] [2024-11-13 13:46:58,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637436397] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:46:58,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:46:58,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:46:58,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299775040] [2024-11-13 13:46:58,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:46:58,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:46:58,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:58,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:46:58,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:46:59,000 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-13 13:46:59,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 209 transitions, 1993 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:59,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:59,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-13 13:46:59,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:47:00,447 INFO L124 PetriNetUnfolderBase]: 3295/5907 cut-off events. [2024-11-13 13:47:00,448 INFO L125 PetriNetUnfolderBase]: For 89661/89932 co-relation queries the response was YES. [2024-11-13 13:47:00,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27793 conditions, 5907 events. 3295/5907 cut-off events. For 89661/89932 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 42221 event pairs, 1317 based on Foata normal form. 41/5760 useless extension candidates. Maximal degree in co-relation 27681. Up to 4637 conditions per place. [2024-11-13 13:47:00,509 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 229 selfloop transitions, 38 changer transitions 3/277 dead transitions. [2024-11-13 13:47:00,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 277 transitions, 3242 flow [2024-11-13 13:47:00,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:47:00,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 13:47:00,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 285 transitions. [2024-11-13 13:47:00,511 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4178885630498534 [2024-11-13 13:47:00,511 INFO L175 Difference]: Start difference. First operand has 212 places, 209 transitions, 1993 flow. Second operand 11 states and 285 transitions. [2024-11-13 13:47:00,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 277 transitions, 3242 flow [2024-11-13 13:47:00,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 277 transitions, 3082 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-11-13 13:47:00,700 INFO L231 Difference]: Finished difference. Result has 217 places, 219 transitions, 2200 flow [2024-11-13 13:47:00,701 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1843, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2200, PETRI_PLACES=217, PETRI_TRANSITIONS=219} [2024-11-13 13:47:00,701 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 156 predicate places. [2024-11-13 13:47:00,701 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 219 transitions, 2200 flow [2024-11-13 13:47:00,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:47:00,701 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:47:00,701 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:47:00,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-13 13:47:00,702 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:47:00,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:00,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1419174617, now seen corresponding path program 21 times [2024-11-13 13:47:00,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:00,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017115871] [2024-11-13 13:47:00,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:00,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:01,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:47:01,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:01,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017115871] [2024-11-13 13:47:01,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017115871] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:47:01,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:47:01,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:47:01,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351678339] [2024-11-13 13:47:01,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:47:01,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:47:01,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:01,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:47:01,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:47:01,314 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-13 13:47:01,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 219 transitions, 2200 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:47:01,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:47:01,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-13 13:47:01,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:47:02,522 INFO L124 PetriNetUnfolderBase]: 3356/6019 cut-off events. [2024-11-13 13:47:02,522 INFO L125 PetriNetUnfolderBase]: For 105636/106032 co-relation queries the response was YES. [2024-11-13 13:47:02,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28688 conditions, 6019 events. 3356/6019 cut-off events. For 105636/106032 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 43270 event pairs, 1418 based on Foata normal form. 55/5881 useless extension candidates. Maximal degree in co-relation 28572. Up to 4876 conditions per place. [2024-11-13 13:47:02,592 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 223 selfloop transitions, 37 changer transitions 4/271 dead transitions. [2024-11-13 13:47:02,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 271 transitions, 3166 flow [2024-11-13 13:47:02,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:47:02,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 13:47:02,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 272 transitions. [2024-11-13 13:47:02,594 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-11-13 13:47:02,594 INFO L175 Difference]: Start difference. First operand has 217 places, 219 transitions, 2200 flow. Second operand 11 states and 272 transitions. [2024-11-13 13:47:02,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 271 transitions, 3166 flow [2024-11-13 13:47:02,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 271 transitions, 2924 flow, removed 103 selfloop flow, removed 5 redundant places. [2024-11-13 13:47:02,770 INFO L231 Difference]: Finished difference. Result has 225 places, 225 transitions, 2185 flow [2024-11-13 13:47:02,770 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1978, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2185, PETRI_PLACES=225, PETRI_TRANSITIONS=225} [2024-11-13 13:47:02,770 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 164 predicate places. [2024-11-13 13:47:02,770 INFO L471 AbstractCegarLoop]: Abstraction has has 225 places, 225 transitions, 2185 flow [2024-11-13 13:47:02,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:47:02,771 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:47:02,771 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:47:02,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-13 13:47:02,771 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:47:02,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:02,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1568846981, now seen corresponding path program 22 times [2024-11-13 13:47:02,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:02,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466137927] [2024-11-13 13:47:02,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:02,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:02,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:03,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:47:03,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:03,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466137927] [2024-11-13 13:47:03,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466137927] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:47:03,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:47:03,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:47:03,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230452323] [2024-11-13 13:47:03,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:47:03,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:47:03,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:03,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:47:03,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:47:03,530 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-13 13:47:03,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 225 transitions, 2185 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:47:03,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:47:03,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-13 13:47:03,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:47:04,895 INFO L124 PetriNetUnfolderBase]: 3492/6263 cut-off events. [2024-11-13 13:47:04,895 INFO L125 PetriNetUnfolderBase]: For 91059/91279 co-relation queries the response was YES. [2024-11-13 13:47:04,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29087 conditions, 6263 events. 3492/6263 cut-off events. For 91059/91279 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 45504 event pairs, 1425 based on Foata normal form. 61/6125 useless extension candidates. Maximal degree in co-relation 28967. Up to 4900 conditions per place. [2024-11-13 13:47:04,966 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 234 selfloop transitions, 43 changer transitions 3/287 dead transitions. [2024-11-13 13:47:04,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 287 transitions, 3377 flow [2024-11-13 13:47:04,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:47:04,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 13:47:04,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 283 transitions. [2024-11-13 13:47:04,967 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4149560117302053 [2024-11-13 13:47:04,967 INFO L175 Difference]: Start difference. First operand has 225 places, 225 transitions, 2185 flow. Second operand 11 states and 283 transitions. [2024-11-13 13:47:04,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 287 transitions, 3377 flow [2024-11-13 13:47:05,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 287 transitions, 3231 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-11-13 13:47:05,160 INFO L231 Difference]: Finished difference. Result has 232 places, 232 transitions, 2384 flow [2024-11-13 13:47:05,161 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2039, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2384, PETRI_PLACES=232, PETRI_TRANSITIONS=232} [2024-11-13 13:47:05,161 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 171 predicate places. [2024-11-13 13:47:05,161 INFO L471 AbstractCegarLoop]: Abstraction has has 232 places, 232 transitions, 2384 flow [2024-11-13 13:47:05,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:47:05,161 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:47:05,161 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:47:05,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-13 13:47:05,162 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:47:05,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:05,162 INFO L85 PathProgramCache]: Analyzing trace with hash 591880953, now seen corresponding path program 23 times [2024-11-13 13:47:05,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:05,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974286535] [2024-11-13 13:47:05,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:05,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:05,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:47:05,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:05,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974286535] [2024-11-13 13:47:05,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974286535] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:47:05,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:47:05,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:47:05,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833279032] [2024-11-13 13:47:05,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:47:05,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:47:05,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:05,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:47:05,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:47:05,810 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-13 13:47:05,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 232 transitions, 2384 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:47:05,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:47:05,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-13 13:47:05,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:47:07,135 INFO L124 PetriNetUnfolderBase]: 3605/6479 cut-off events. [2024-11-13 13:47:07,136 INFO L125 PetriNetUnfolderBase]: For 115110/115341 co-relation queries the response was YES. [2024-11-13 13:47:07,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31205 conditions, 6479 events. 3605/6479 cut-off events. For 115110/115341 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 47526 event pairs, 1507 based on Foata normal form. 51/6316 useless extension candidates. Maximal degree in co-relation 31081. Up to 5207 conditions per place. [2024-11-13 13:47:07,192 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 250 selfloop transitions, 36 changer transitions 3/296 dead transitions. [2024-11-13 13:47:07,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 296 transitions, 3674 flow [2024-11-13 13:47:07,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:47:07,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 13:47:07,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 282 transitions. [2024-11-13 13:47:07,194 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-11-13 13:47:07,194 INFO L175 Difference]: Start difference. First operand has 232 places, 232 transitions, 2384 flow. Second operand 11 states and 282 transitions. [2024-11-13 13:47:07,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 296 transitions, 3674 flow [2024-11-13 13:47:07,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 296 transitions, 3436 flow, removed 98 selfloop flow, removed 6 redundant places. [2024-11-13 13:47:07,469 INFO L231 Difference]: Finished difference. Result has 240 places, 239 transitions, 2480 flow [2024-11-13 13:47:07,469 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2152, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2480, PETRI_PLACES=240, PETRI_TRANSITIONS=239} [2024-11-13 13:47:07,469 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 179 predicate places. [2024-11-13 13:47:07,470 INFO L471 AbstractCegarLoop]: Abstraction has has 240 places, 239 transitions, 2480 flow [2024-11-13 13:47:07,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:47:07,470 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:47:07,470 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:47:07,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-13 13:47:07,470 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:47:07,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:07,471 INFO L85 PathProgramCache]: Analyzing trace with hash 453852201, now seen corresponding path program 24 times [2024-11-13 13:47:07,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:07,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199492949] [2024-11-13 13:47:07,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:07,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:07,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:08,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:47:08,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:08,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199492949] [2024-11-13 13:47:08,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199492949] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:47:08,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:47:08,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:47:08,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067559796] [2024-11-13 13:47:08,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:47:08,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:47:08,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:08,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:47:08,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:47:08,126 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-13 13:47:08,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 239 transitions, 2480 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:47:08,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:47:08,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-13 13:47:08,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:47:09,962 INFO L124 PetriNetUnfolderBase]: 3710/6698 cut-off events. [2024-11-13 13:47:09,962 INFO L125 PetriNetUnfolderBase]: For 130853/131092 co-relation queries the response was YES. [2024-11-13 13:47:10,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32313 conditions, 6698 events. 3710/6698 cut-off events. For 130853/131092 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 49744 event pairs, 1564 based on Foata normal form. 53/6531 useless extension candidates. Maximal degree in co-relation 32184. Up to 5385 conditions per place. [2024-11-13 13:47:10,063 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 256 selfloop transitions, 36 changer transitions 3/302 dead transitions. [2024-11-13 13:47:10,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 302 transitions, 3712 flow [2024-11-13 13:47:10,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:47:10,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 13:47:10,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 282 transitions. [2024-11-13 13:47:10,065 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-11-13 13:47:10,065 INFO L175 Difference]: Start difference. First operand has 240 places, 239 transitions, 2480 flow. Second operand 11 states and 282 transitions. [2024-11-13 13:47:10,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 302 transitions, 3712 flow [2024-11-13 13:47:10,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 302 transitions, 3488 flow, removed 94 selfloop flow, removed 5 redundant places. [2024-11-13 13:47:10,369 INFO L231 Difference]: Finished difference. Result has 248 places, 245 transitions, 2517 flow [2024-11-13 13:47:10,369 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2256, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2517, PETRI_PLACES=248, PETRI_TRANSITIONS=245} [2024-11-13 13:47:10,370 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 187 predicate places. [2024-11-13 13:47:10,370 INFO L471 AbstractCegarLoop]: Abstraction has has 248 places, 245 transitions, 2517 flow [2024-11-13 13:47:10,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:47:10,370 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:47:10,370 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:47:10,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-13 13:47:10,370 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:47:10,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:10,371 INFO L85 PathProgramCache]: Analyzing trace with hash -839451819, now seen corresponding path program 25 times [2024-11-13 13:47:10,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:10,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824121280] [2024-11-13 13:47:10,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:10,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:10,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:10,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:47:10,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:10,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824121280] [2024-11-13 13:47:10,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824121280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:47:10,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:47:10,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:47:10,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80780561] [2024-11-13 13:47:10,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:47:10,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:47:10,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:10,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:47:10,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:47:10,991 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-13 13:47:10,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 245 transitions, 2517 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:47:10,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:47:10,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-13 13:47:10,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:47:12,572 INFO L124 PetriNetUnfolderBase]: 3710/6673 cut-off events. [2024-11-13 13:47:12,572 INFO L125 PetriNetUnfolderBase]: For 130480/130714 co-relation queries the response was YES. [2024-11-13 13:47:12,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31996 conditions, 6673 events. 3710/6673 cut-off events. For 130480/130714 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 49612 event pairs, 1592 based on Foata normal form. 59/6507 useless extension candidates. Maximal degree in co-relation 31863. Up to 5462 conditions per place. [2024-11-13 13:47:12,663 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 252 selfloop transitions, 35 changer transitions 3/297 dead transitions. [2024-11-13 13:47:12,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 297 transitions, 3556 flow [2024-11-13 13:47:12,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:47:12,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 13:47:12,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 273 transitions. [2024-11-13 13:47:12,664 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4002932551319648 [2024-11-13 13:47:12,665 INFO L175 Difference]: Start difference. First operand has 248 places, 245 transitions, 2517 flow. Second operand 11 states and 273 transitions. [2024-11-13 13:47:12,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 297 transitions, 3556 flow [2024-11-13 13:47:12,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 297 transitions, 3369 flow, removed 74 selfloop flow, removed 6 redundant places. [2024-11-13 13:47:12,976 INFO L231 Difference]: Finished difference. Result has 254 places, 248 transitions, 2465 flow [2024-11-13 13:47:12,976 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2330, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2465, PETRI_PLACES=254, PETRI_TRANSITIONS=248} [2024-11-13 13:47:12,977 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 193 predicate places. [2024-11-13 13:47:12,977 INFO L471 AbstractCegarLoop]: Abstraction has has 254 places, 248 transitions, 2465 flow [2024-11-13 13:47:12,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:47:12,977 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:47:12,977 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:47:12,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-13 13:47:12,977 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:47:12,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:12,978 INFO L85 PathProgramCache]: Analyzing trace with hash 578019271, now seen corresponding path program 26 times [2024-11-13 13:47:12,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:12,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978964536] [2024-11-13 13:47:12,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:12,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:13,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:13,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:47:13,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:13,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978964536] [2024-11-13 13:47:13,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978964536] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:47:13,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:47:13,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:47:13,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578620466] [2024-11-13 13:47:13,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:47:13,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:47:13,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:13,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:47:13,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:47:13,566 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-13 13:47:13,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 248 transitions, 2465 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:47:13,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:47:13,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-13 13:47:13,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:47:15,031 INFO L124 PetriNetUnfolderBase]: 3806/6883 cut-off events. [2024-11-13 13:47:15,031 INFO L125 PetriNetUnfolderBase]: For 134593/134807 co-relation queries the response was YES. [2024-11-13 13:47:15,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33113 conditions, 6883 events. 3806/6883 cut-off events. For 134593/134807 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 51571 event pairs, 1666 based on Foata normal form. 48/6703 useless extension candidates. Maximal degree in co-relation 32977. Up to 5545 conditions per place. [2024-11-13 13:47:15,122 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 263 selfloop transitions, 37 changer transitions 3/310 dead transitions. [2024-11-13 13:47:15,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 310 transitions, 3736 flow [2024-11-13 13:47:15,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:47:15,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 13:47:15,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 282 transitions. [2024-11-13 13:47:15,124 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-11-13 13:47:15,124 INFO L175 Difference]: Start difference. First operand has 254 places, 248 transitions, 2465 flow. Second operand 11 states and 282 transitions. [2024-11-13 13:47:15,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 310 transitions, 3736 flow [2024-11-13 13:47:15,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 310 transitions, 3606 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-11-13 13:47:15,403 INFO L231 Difference]: Finished difference. Result has 259 places, 254 transitions, 2612 flow [2024-11-13 13:47:15,403 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2335, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2612, PETRI_PLACES=259, PETRI_TRANSITIONS=254} [2024-11-13 13:47:15,404 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 198 predicate places. [2024-11-13 13:47:15,404 INFO L471 AbstractCegarLoop]: Abstraction has has 259 places, 254 transitions, 2612 flow [2024-11-13 13:47:15,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:47:15,404 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:47:15,404 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:47:15,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-13 13:47:15,404 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:47:15,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:15,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1730211239, now seen corresponding path program 27 times [2024-11-13 13:47:15,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:15,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735934528] [2024-11-13 13:47:15,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:15,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:15,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:15,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:47:15,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:15,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735934528] [2024-11-13 13:47:15,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735934528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:47:15,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:47:15,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:47:15,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311060912] [2024-11-13 13:47:15,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:47:15,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:47:15,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:15,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:47:15,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:47:15,941 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-13 13:47:15,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 254 transitions, 2612 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:47:15,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:47:15,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-13 13:47:15,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:47:17,478 INFO L124 PetriNetUnfolderBase]: 3806/6891 cut-off events. [2024-11-13 13:47:17,478 INFO L125 PetriNetUnfolderBase]: For 144132/144346 co-relation queries the response was YES. [2024-11-13 13:47:17,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33503 conditions, 6891 events. 3806/6891 cut-off events. For 144132/144346 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 51758 event pairs, 1665 based on Foata normal form. 54/6716 useless extension candidates. Maximal degree in co-relation 33364. Up to 5583 conditions per place. [2024-11-13 13:47:17,563 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 261 selfloop transitions, 38 changer transitions 4/310 dead transitions. [2024-11-13 13:47:17,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 310 transitions, 3707 flow [2024-11-13 13:47:17,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:47:17,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 13:47:17,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 279 transitions. [2024-11-13 13:47:17,564 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-11-13 13:47:17,564 INFO L175 Difference]: Start difference. First operand has 259 places, 254 transitions, 2612 flow. Second operand 11 states and 279 transitions. [2024-11-13 13:47:17,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 310 transitions, 3707 flow [2024-11-13 13:47:17,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 310 transitions, 3505 flow, removed 81 selfloop flow, removed 6 redundant places. [2024-11-13 13:47:17,826 INFO L231 Difference]: Finished difference. Result has 265 places, 258 transitions, 2561 flow [2024-11-13 13:47:17,826 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2410, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2561, PETRI_PLACES=265, PETRI_TRANSITIONS=258} [2024-11-13 13:47:17,827 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 204 predicate places. [2024-11-13 13:47:17,827 INFO L471 AbstractCegarLoop]: Abstraction has has 265 places, 258 transitions, 2561 flow [2024-11-13 13:47:17,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:47:17,827 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:47:17,827 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:47:17,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-13 13:47:17,827 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:47:17,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:17,828 INFO L85 PathProgramCache]: Analyzing trace with hash 350260357, now seen corresponding path program 28 times [2024-11-13 13:47:17,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:17,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180508260] [2024-11-13 13:47:17,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:17,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:17,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:18,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:47:18,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:18,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180508260] [2024-11-13 13:47:18,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180508260] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:47:18,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:47:18,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:47:18,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078150614] [2024-11-13 13:47:18,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:47:18,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:47:18,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:18,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:47:18,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:47:18,408 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-13 13:47:18,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 258 transitions, 2561 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:47:18,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:47:18,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-13 13:47:18,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:47:20,247 INFO L124 PetriNetUnfolderBase]: 3806/6889 cut-off events. [2024-11-13 13:47:20,247 INFO L125 PetriNetUnfolderBase]: For 137484/137722 co-relation queries the response was YES. [2024-11-13 13:47:20,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32992 conditions, 6889 events. 3806/6889 cut-off events. For 137484/137722 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 51728 event pairs, 1661 based on Foata normal form. 70/6732 useless extension candidates. Maximal degree in co-relation 32850. Up to 5579 conditions per place. [2024-11-13 13:47:20,352 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 259 selfloop transitions, 42 changer transitions 4/312 dead transitions. [2024-11-13 13:47:20,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 312 transitions, 3604 flow [2024-11-13 13:47:20,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:47:20,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 13:47:20,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 278 transitions. [2024-11-13 13:47:20,353 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-11-13 13:47:20,353 INFO L175 Difference]: Start difference. First operand has 265 places, 258 transitions, 2561 flow. Second operand 11 states and 278 transitions. [2024-11-13 13:47:20,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 312 transitions, 3604 flow [2024-11-13 13:47:20,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 312 transitions, 3468 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-11-13 13:47:20,674 INFO L231 Difference]: Finished difference. Result has 269 places, 262 transitions, 2595 flow [2024-11-13 13:47:20,674 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2425, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2595, PETRI_PLACES=269, PETRI_TRANSITIONS=262} [2024-11-13 13:47:20,675 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 208 predicate places. [2024-11-13 13:47:20,675 INFO L471 AbstractCegarLoop]: Abstraction has has 269 places, 262 transitions, 2595 flow [2024-11-13 13:47:20,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:47:20,675 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:47:20,675 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:47:20,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-13 13:47:20,675 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:47:20,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:20,676 INFO L85 PathProgramCache]: Analyzing trace with hash 2083982335, now seen corresponding path program 29 times [2024-11-13 13:47:20,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:20,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363179628] [2024-11-13 13:47:20,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:20,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:20,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:21,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:47:21,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:21,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363179628] [2024-11-13 13:47:21,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363179628] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:47:21,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:47:21,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:47:21,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976045862] [2024-11-13 13:47:21,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:47:21,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:47:21,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:21,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:47:21,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:47:21,411 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-13 13:47:21,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 262 transitions, 2595 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:47:21,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:47:21,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-13 13:47:21,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:47:22,879 INFO L124 PetriNetUnfolderBase]: 3842/6955 cut-off events. [2024-11-13 13:47:22,879 INFO L125 PetriNetUnfolderBase]: For 136610/136848 co-relation queries the response was YES. [2024-11-13 13:47:22,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33048 conditions, 6955 events. 3842/6955 cut-off events. For 136610/136848 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 52338 event pairs, 1723 based on Foata normal form. 70/6786 useless extension candidates. Maximal degree in co-relation 32904. Up to 5713 conditions per place. [2024-11-13 13:47:22,995 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 263 selfloop transitions, 38 changer transitions 3/311 dead transitions. [2024-11-13 13:47:22,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 311 transitions, 3613 flow [2024-11-13 13:47:22,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:47:22,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 13:47:22,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 272 transitions. [2024-11-13 13:47:22,996 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-11-13 13:47:22,996 INFO L175 Difference]: Start difference. First operand has 269 places, 262 transitions, 2595 flow. Second operand 11 states and 272 transitions. [2024-11-13 13:47:22,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 311 transitions, 3613 flow [2024-11-13 13:47:23,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 311 transitions, 3459 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-11-13 13:47:23,474 INFO L231 Difference]: Finished difference. Result has 273 places, 265 transitions, 2591 flow [2024-11-13 13:47:23,474 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2441, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2591, PETRI_PLACES=273, PETRI_TRANSITIONS=265} [2024-11-13 13:47:23,475 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 212 predicate places. [2024-11-13 13:47:23,475 INFO L471 AbstractCegarLoop]: Abstraction has has 273 places, 265 transitions, 2591 flow [2024-11-13 13:47:23,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:47:23,475 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:47:23,475 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:47:23,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-13 13:47:23,475 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:47:23,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:23,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1428060839, now seen corresponding path program 30 times [2024-11-13 13:47:23,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:23,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939597681] [2024-11-13 13:47:23,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:23,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:23,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:24,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:47:24,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:24,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939597681] [2024-11-13 13:47:24,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939597681] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:47:24,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:47:24,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:47:24,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058509920] [2024-11-13 13:47:24,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:47:24,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:47:24,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:24,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:47:24,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:47:24,133 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-13 13:47:24,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 265 transitions, 2591 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:47:24,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:47:24,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-13 13:47:24,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:47:25,673 INFO L124 PetriNetUnfolderBase]: 3842/6968 cut-off events. [2024-11-13 13:47:25,673 INFO L125 PetriNetUnfolderBase]: For 134281/134519 co-relation queries the response was YES. [2024-11-13 13:47:25,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32797 conditions, 6968 events. 3842/6968 cut-off events. For 134281/134519 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 52598 event pairs, 1730 based on Foata normal form. 62/6791 useless extension candidates. Maximal degree in co-relation 32651. Up to 5726 conditions per place. [2024-11-13 13:47:25,785 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 265 selfloop transitions, 36 changer transitions 3/311 dead transitions. [2024-11-13 13:47:25,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 311 transitions, 3559 flow [2024-11-13 13:47:25,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:47:25,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 13:47:25,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 269 transitions. [2024-11-13 13:47:25,786 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3944281524926686 [2024-11-13 13:47:25,786 INFO L175 Difference]: Start difference. First operand has 273 places, 265 transitions, 2591 flow. Second operand 11 states and 269 transitions. [2024-11-13 13:47:25,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 311 transitions, 3559 flow [2024-11-13 13:47:26,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 311 transitions, 3429 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-11-13 13:47:26,131 INFO L231 Difference]: Finished difference. Result has 277 places, 267 transitions, 2559 flow [2024-11-13 13:47:26,132 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2463, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2559, PETRI_PLACES=277, PETRI_TRANSITIONS=267} [2024-11-13 13:47:26,132 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 216 predicate places. [2024-11-13 13:47:26,132 INFO L471 AbstractCegarLoop]: Abstraction has has 277 places, 267 transitions, 2559 flow [2024-11-13 13:47:26,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:47:26,132 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:47:26,132 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:47:26,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-11-13 13:47:26,133 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:47:26,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:26,133 INFO L85 PathProgramCache]: Analyzing trace with hash 298735727, now seen corresponding path program 31 times [2024-11-13 13:47:26,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:26,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032019441] [2024-11-13 13:47:26,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:26,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:26,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:26,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:47:26,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:26,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032019441] [2024-11-13 13:47:26,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032019441] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:47:26,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:47:26,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:47:26,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662611734] [2024-11-13 13:47:26,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:47:26,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:47:26,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:26,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:47:26,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:47:26,795 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-13 13:47:26,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 267 transitions, 2559 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:47:26,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:47:26,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-13 13:47:26,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:47:28,427 INFO L124 PetriNetUnfolderBase]: 3973/7203 cut-off events. [2024-11-13 13:47:28,427 INFO L125 PetriNetUnfolderBase]: For 150549/150818 co-relation queries the response was YES. [2024-11-13 13:47:28,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34717 conditions, 7203 events. 3973/7203 cut-off events. For 150549/150818 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 54752 event pairs, 1750 based on Foata normal form. 54/7014 useless extension candidates. Maximal degree in co-relation 34569. Up to 5839 conditions per place. [2024-11-13 13:47:28,555 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 281 selfloop transitions, 36 changer transitions 3/327 dead transitions. [2024-11-13 13:47:28,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 327 transitions, 4048 flow [2024-11-13 13:47:28,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:47:28,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 13:47:28,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 279 transitions. [2024-11-13 13:47:28,556 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-11-13 13:47:28,556 INFO L175 Difference]: Start difference. First operand has 277 places, 267 transitions, 2559 flow. Second operand 11 states and 279 transitions. [2024-11-13 13:47:28,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 327 transitions, 4048 flow [2024-11-13 13:47:28,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 327 transitions, 3978 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-11-13 13:47:28,974 INFO L231 Difference]: Finished difference. Result has 283 places, 276 transitions, 2970 flow [2024-11-13 13:47:28,974 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2489, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2970, PETRI_PLACES=283, PETRI_TRANSITIONS=276} [2024-11-13 13:47:28,975 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 222 predicate places. [2024-11-13 13:47:28,978 INFO L471 AbstractCegarLoop]: Abstraction has has 283 places, 276 transitions, 2970 flow [2024-11-13 13:47:28,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:47:28,979 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:47:28,979 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:47:28,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-11-13 13:47:28,979 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:47:28,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:28,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1095569311, now seen corresponding path program 32 times [2024-11-13 13:47:28,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:28,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346340022] [2024-11-13 13:47:28,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:28,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:29,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:29,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:47:29,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:29,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346340022] [2024-11-13 13:47:29,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346340022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:47:29,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:47:29,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:47:29,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445120483] [2024-11-13 13:47:29,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:47:29,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:47:29,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:29,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:47:29,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:47:29,630 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-13 13:47:29,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 276 transitions, 2970 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:47:29,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:47:29,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-13 13:47:29,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:47:31,389 INFO L124 PetriNetUnfolderBase]: 4135/7486 cut-off events. [2024-11-13 13:47:31,389 INFO L125 PetriNetUnfolderBase]: For 208124/208605 co-relation queries the response was YES. [2024-11-13 13:47:31,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38574 conditions, 7486 events. 4135/7486 cut-off events. For 208124/208605 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 57370 event pairs, 1791 based on Foata normal form. 54/7286 useless extension candidates. Maximal degree in co-relation 38422. Up to 6025 conditions per place. [2024-11-13 13:47:31,487 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 293 selfloop transitions, 37 changer transitions 3/340 dead transitions. [2024-11-13 13:47:31,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 340 transitions, 4493 flow [2024-11-13 13:47:31,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:47:31,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 13:47:31,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 284 transitions. [2024-11-13 13:47:31,488 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41642228739002934 [2024-11-13 13:47:31,488 INFO L175 Difference]: Start difference. First operand has 283 places, 276 transitions, 2970 flow. Second operand 11 states and 284 transitions. [2024-11-13 13:47:31,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 340 transitions, 4493 flow [2024-11-13 13:47:31,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 340 transitions, 4157 flow, removed 151 selfloop flow, removed 5 redundant places. [2024-11-13 13:47:31,897 INFO L231 Difference]: Finished difference. Result has 292 places, 285 transitions, 3079 flow [2024-11-13 13:47:31,897 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2634, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3079, PETRI_PLACES=292, PETRI_TRANSITIONS=285} [2024-11-13 13:47:31,898 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 231 predicate places. [2024-11-13 13:47:31,898 INFO L471 AbstractCegarLoop]: Abstraction has has 292 places, 285 transitions, 3079 flow [2024-11-13 13:47:31,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:47:31,898 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:47:31,898 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:47:31,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-11-13 13:47:31,898 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:47:31,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:31,899 INFO L85 PathProgramCache]: Analyzing trace with hash -465828721, now seen corresponding path program 33 times [2024-11-13 13:47:31,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:31,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79849834] [2024-11-13 13:47:31,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:31,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:31,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:32,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:47:32,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:32,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79849834] [2024-11-13 13:47:32,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79849834] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:47:32,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:47:32,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:47:32,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193016406] [2024-11-13 13:47:32,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:47:32,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:47:32,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:32,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:47:32,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:47:32,409 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-13 13:47:32,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 285 transitions, 3079 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:47:32,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:47:32,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-13 13:47:32,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:47:34,222 INFO L124 PetriNetUnfolderBase]: 4196/7596 cut-off events. [2024-11-13 13:47:34,222 INFO L125 PetriNetUnfolderBase]: For 217937/218452 co-relation queries the response was YES. [2024-11-13 13:47:34,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38927 conditions, 7596 events. 4196/7596 cut-off events. For 217937/218452 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 58414 event pairs, 1881 based on Foata normal form. 68/7406 useless extension candidates. Maximal degree in co-relation 38770. Up to 6264 conditions per place. [2024-11-13 13:47:34,316 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 287 selfloop transitions, 36 changer transitions 4/334 dead transitions. [2024-11-13 13:47:34,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 334 transitions, 4221 flow [2024-11-13 13:47:34,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:47:34,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 13:47:34,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 271 transitions. [2024-11-13 13:47:34,317 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3973607038123167 [2024-11-13 13:47:34,318 INFO L175 Difference]: Start difference. First operand has 292 places, 285 transitions, 3079 flow. Second operand 11 states and 271 transitions. [2024-11-13 13:47:34,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 334 transitions, 4221 flow [2024-11-13 13:47:34,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 334 transitions, 3919 flow, removed 134 selfloop flow, removed 5 redundant places. [2024-11-13 13:47:34,843 INFO L231 Difference]: Finished difference. Result has 300 places, 291 transitions, 3034 flow [2024-11-13 13:47:34,844 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2777, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3034, PETRI_PLACES=300, PETRI_TRANSITIONS=291} [2024-11-13 13:47:34,844 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 239 predicate places. [2024-11-13 13:47:34,844 INFO L471 AbstractCegarLoop]: Abstraction has has 300 places, 291 transitions, 3034 flow [2024-11-13 13:47:34,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:47:34,845 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:47:34,845 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:47:34,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-11-13 13:47:34,845 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:47:34,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:34,846 INFO L85 PathProgramCache]: Analyzing trace with hash -726818891, now seen corresponding path program 34 times [2024-11-13 13:47:34,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:34,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535474340] [2024-11-13 13:47:34,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:34,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:34,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:35,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:47:35,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:35,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535474340] [2024-11-13 13:47:35,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535474340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:47:35,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:47:35,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:47:35,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489304772] [2024-11-13 13:47:35,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:47:35,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:47:35,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:35,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:47:35,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:47:35,587 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-13 13:47:35,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 291 transitions, 3034 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:47:35,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:47:35,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-13 13:47:35,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:47:37,590 INFO L124 PetriNetUnfolderBase]: 4347/7840 cut-off events. [2024-11-13 13:47:37,590 INFO L125 PetriNetUnfolderBase]: For 219562/219853 co-relation queries the response was YES. [2024-11-13 13:47:37,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39866 conditions, 7840 events. 4347/7840 cut-off events. For 219562/219853 co-relation queries the response was YES. Maximal size of possible extension queue 669. Compared 60461 event pairs, 1923 based on Foata normal form. 74/7655 useless extension candidates. Maximal degree in co-relation 39705. Up to 6288 conditions per place. [2024-11-13 13:47:37,690 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 298 selfloop transitions, 42 changer transitions 3/350 dead transitions. [2024-11-13 13:47:37,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 350 transitions, 4524 flow [2024-11-13 13:47:37,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:47:37,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 13:47:37,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 282 transitions. [2024-11-13 13:47:37,692 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-11-13 13:47:37,692 INFO L175 Difference]: Start difference. First operand has 300 places, 291 transitions, 3034 flow. Second operand 11 states and 282 transitions. [2024-11-13 13:47:37,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 350 transitions, 4524 flow [2024-11-13 13:47:38,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 350 transitions, 4306 flow, removed 89 selfloop flow, removed 6 redundant places. [2024-11-13 13:47:38,385 INFO L231 Difference]: Finished difference. Result has 307 places, 298 transitions, 3267 flow [2024-11-13 13:47:38,386 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2816, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3267, PETRI_PLACES=307, PETRI_TRANSITIONS=298} [2024-11-13 13:47:38,386 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 246 predicate places. [2024-11-13 13:47:38,386 INFO L471 AbstractCegarLoop]: Abstraction has has 307 places, 298 transitions, 3267 flow [2024-11-13 13:47:38,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:47:38,386 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:47:38,387 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:47:38,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-11-13 13:47:38,387 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:47:38,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:38,387 INFO L85 PathProgramCache]: Analyzing trace with hash -2130071769, now seen corresponding path program 35 times [2024-11-13 13:47:38,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:38,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437889667] [2024-11-13 13:47:38,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:38,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:38,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:39,165 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:47:39,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:39,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437889667] [2024-11-13 13:47:39,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437889667] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:47:39,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:47:39,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:47:39,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150743587] [2024-11-13 13:47:39,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:47:39,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:47:39,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:39,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:47:39,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:47:39,212 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-13 13:47:39,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 298 transitions, 3267 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:47:39,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:47:39,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-13 13:47:39,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:47:41,602 INFO L124 PetriNetUnfolderBase]: 4410/7967 cut-off events. [2024-11-13 13:47:41,603 INFO L125 PetriNetUnfolderBase]: For 252973/253274 co-relation queries the response was YES. [2024-11-13 13:47:41,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41686 conditions, 7967 events. 4410/7967 cut-off events. For 252973/253274 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 61907 event pairs, 1995 based on Foata normal form. 63/7767 useless extension candidates. Maximal degree in co-relation 41521. Up to 6521 conditions per place. [2024-11-13 13:47:41,704 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 312 selfloop transitions, 35 changer transitions 3/357 dead transitions. [2024-11-13 13:47:41,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 357 transitions, 4700 flow [2024-11-13 13:47:41,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:47:41,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 13:47:41,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 281 transitions. [2024-11-13 13:47:41,706 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4120234604105572 [2024-11-13 13:47:41,706 INFO L175 Difference]: Start difference. First operand has 307 places, 298 transitions, 3267 flow. Second operand 11 states and 281 transitions. [2024-11-13 13:47:41,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 357 transitions, 4700 flow [2024-11-13 13:47:42,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 357 transitions, 4370 flow, removed 145 selfloop flow, removed 6 redundant places. [2024-11-13 13:47:42,384 INFO L231 Difference]: Finished difference. Result has 314 places, 303 transitions, 3251 flow [2024-11-13 13:47:42,384 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2941, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3251, PETRI_PLACES=314, PETRI_TRANSITIONS=303} [2024-11-13 13:47:42,385 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 253 predicate places. [2024-11-13 13:47:42,385 INFO L471 AbstractCegarLoop]: Abstraction has has 314 places, 303 transitions, 3251 flow [2024-11-13 13:47:42,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:47:42,385 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:47:42,385 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:47:42,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-11-13 13:47:42,385 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:47:42,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:42,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1051769, now seen corresponding path program 36 times [2024-11-13 13:47:42,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:42,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612200957] [2024-11-13 13:47:42,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:42,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:42,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:42,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:47:42,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:42,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612200957] [2024-11-13 13:47:42,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612200957] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:47:42,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:47:42,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:47:42,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955509792] [2024-11-13 13:47:42,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:47:42,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:47:42,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:42,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:47:42,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:47:43,023 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-13 13:47:43,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 303 transitions, 3251 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:47:43,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:47:43,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-13 13:47:43,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:47:45,219 INFO L124 PetriNetUnfolderBase]: 4410/7956 cut-off events. [2024-11-13 13:47:45,219 INFO L125 PetriNetUnfolderBase]: For 241742/242035 co-relation queries the response was YES. [2024-11-13 13:47:45,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40541 conditions, 7956 events. 4410/7956 cut-off events. For 241742/242035 co-relation queries the response was YES. Maximal size of possible extension queue 685. Compared 61751 event pairs, 2019 based on Foata normal form. 69/7758 useless extension candidates. Maximal degree in co-relation 40372. Up to 6598 conditions per place. [2024-11-13 13:47:45,361 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 308 selfloop transitions, 34 changer transitions 3/352 dead transitions. [2024-11-13 13:47:45,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 352 transitions, 4434 flow [2024-11-13 13:47:45,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:47:45,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 13:47:45,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 272 transitions. [2024-11-13 13:47:45,363 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-11-13 13:47:45,363 INFO L175 Difference]: Start difference. First operand has 314 places, 303 transitions, 3251 flow. Second operand 11 states and 272 transitions. [2024-11-13 13:47:45,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 352 transitions, 4434 flow [2024-11-13 13:47:46,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 352 transitions, 4187 flow, removed 105 selfloop flow, removed 6 redundant places. [2024-11-13 13:47:46,175 INFO L231 Difference]: Finished difference. Result has 320 places, 306 transitions, 3157 flow [2024-11-13 13:47:46,175 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3004, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3157, PETRI_PLACES=320, PETRI_TRANSITIONS=306} [2024-11-13 13:47:46,176 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 259 predicate places. [2024-11-13 13:47:46,176 INFO L471 AbstractCegarLoop]: Abstraction has has 320 places, 306 transitions, 3157 flow [2024-11-13 13:47:46,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:47:46,176 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:47:46,176 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:47:46,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-11-13 13:47:46,176 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:47:46,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:46,177 INFO L85 PathProgramCache]: Analyzing trace with hash 412173999, now seen corresponding path program 37 times [2024-11-13 13:47:46,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:46,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904863036] [2024-11-13 13:47:46,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:46,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:46,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:46,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:47:46,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:46,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904863036] [2024-11-13 13:47:46,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904863036] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:47:46,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:47:46,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:47:46,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577477015] [2024-11-13 13:47:46,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:47:46,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:47:46,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:46,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:47:46,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:47:46,939 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-13 13:47:46,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 306 transitions, 3157 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:47:46,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:47:46,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-13 13:47:46,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:47:49,616 INFO L124 PetriNetUnfolderBase]: 4473/8082 cut-off events. [2024-11-13 13:47:49,617 INFO L125 PetriNetUnfolderBase]: For 243801/244074 co-relation queries the response was YES. [2024-11-13 13:47:49,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41044 conditions, 8082 events. 4473/8082 cut-off events. For 243801/244074 co-relation queries the response was YES. Maximal size of possible extension queue 688. Compared 62915 event pairs, 2069 based on Foata normal form. 58/7877 useless extension candidates. Maximal degree in co-relation 40872. Up to 6613 conditions per place. [2024-11-13 13:47:49,746 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 318 selfloop transitions, 36 changer transitions 3/364 dead transitions. [2024-11-13 13:47:49,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 364 transitions, 4619 flow [2024-11-13 13:47:49,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:47:49,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 13:47:49,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 281 transitions. [2024-11-13 13:47:49,747 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4120234604105572 [2024-11-13 13:47:49,747 INFO L175 Difference]: Start difference. First operand has 320 places, 306 transitions, 3157 flow. Second operand 11 states and 281 transitions. [2024-11-13 13:47:49,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 364 transitions, 4619 flow [2024-11-13 13:47:50,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 364 transitions, 4493 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-11-13 13:47:50,743 INFO L231 Difference]: Finished difference. Result has 325 places, 311 transitions, 3355 flow [2024-11-13 13:47:50,744 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3031, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3355, PETRI_PLACES=325, PETRI_TRANSITIONS=311} [2024-11-13 13:47:50,744 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 264 predicate places. [2024-11-13 13:47:50,745 INFO L471 AbstractCegarLoop]: Abstraction has has 325 places, 311 transitions, 3355 flow [2024-11-13 13:47:50,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:47:50,745 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:47:50,745 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:47:50,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-11-13 13:47:50,745 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:47:50,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:50,746 INFO L85 PathProgramCache]: Analyzing trace with hash -563719179, now seen corresponding path program 38 times [2024-11-13 13:47:50,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:50,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109631820] [2024-11-13 13:47:50,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:50,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:50,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:51,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:47:51,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:51,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109631820] [2024-11-13 13:47:51,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109631820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:47:51,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:47:51,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:47:51,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055536152] [2024-11-13 13:47:51,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:47:51,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:47:51,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:51,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:47:51,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:47:51,507 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-13 13:47:51,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 311 transitions, 3355 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:47:51,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:47:51,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-13 13:47:51,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:47:54,100 INFO L124 PetriNetUnfolderBase]: 4473/8090 cut-off events. [2024-11-13 13:47:54,101 INFO L125 PetriNetUnfolderBase]: For 256352/256625 co-relation queries the response was YES. [2024-11-13 13:47:54,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41403 conditions, 8090 events. 4473/8090 cut-off events. For 256352/256625 co-relation queries the response was YES. Maximal size of possible extension queue 692. Compared 63071 event pairs, 2064 based on Foata normal form. 64/7890 useless extension candidates. Maximal degree in co-relation 41228. Up to 6651 conditions per place. [2024-11-13 13:47:54,219 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 316 selfloop transitions, 37 changer transitions 4/364 dead transitions. [2024-11-13 13:47:54,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 364 transitions, 4590 flow [2024-11-13 13:47:54,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:47:54,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 13:47:54,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 278 transitions. [2024-11-13 13:47:54,221 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-11-13 13:47:54,221 INFO L175 Difference]: Start difference. First operand has 325 places, 311 transitions, 3355 flow. Second operand 11 states and 278 transitions. [2024-11-13 13:47:54,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 364 transitions, 4590 flow [2024-11-13 13:47:54,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 364 transitions, 4328 flow, removed 112 selfloop flow, removed 6 redundant places. [2024-11-13 13:47:54,842 INFO L231 Difference]: Finished difference. Result has 331 places, 315 transitions, 3262 flow [2024-11-13 13:47:54,843 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3093, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3262, PETRI_PLACES=331, PETRI_TRANSITIONS=315} [2024-11-13 13:47:54,843 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 270 predicate places. [2024-11-13 13:47:54,843 INFO L471 AbstractCegarLoop]: Abstraction has has 331 places, 315 transitions, 3262 flow [2024-11-13 13:47:54,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:47:54,843 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:47:54,844 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:47:54,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-11-13 13:47:54,844 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:47:54,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:54,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1905904051, now seen corresponding path program 39 times [2024-11-13 13:47:54,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:54,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862648176] [2024-11-13 13:47:54,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:54,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:55,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:47:55,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:55,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862648176] [2024-11-13 13:47:55,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862648176] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:47:55,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:47:55,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:47:55,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481231557] [2024-11-13 13:47:55,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:47:55,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:47:55,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:55,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:47:55,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:47:55,808 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-13 13:47:55,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 315 transitions, 3262 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:47:55,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:47:55,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-13 13:47:55,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:47:58,435 INFO L124 PetriNetUnfolderBase]: 4509/8156 cut-off events. [2024-11-13 13:47:58,435 INFO L125 PetriNetUnfolderBase]: For 241122/241419 co-relation queries the response was YES. [2024-11-13 13:47:58,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40776 conditions, 8156 events. 4509/8156 cut-off events. For 241122/241419 co-relation queries the response was YES. Maximal size of possible extension queue 704. Compared 63718 event pairs, 2122 based on Foata normal form. 80/7962 useless extension candidates. Maximal degree in co-relation 40598. Up to 6782 conditions per place. [2024-11-13 13:47:58,557 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 314 selfloop transitions, 37 changer transitions 3/361 dead transitions. [2024-11-13 13:47:58,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 361 transitions, 4392 flow [2024-11-13 13:47:58,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:47:58,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 13:47:58,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 271 transitions. [2024-11-13 13:47:58,558 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3973607038123167 [2024-11-13 13:47:58,558 INFO L175 Difference]: Start difference. First operand has 331 places, 315 transitions, 3262 flow. Second operand 11 states and 271 transitions. [2024-11-13 13:47:58,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 361 transitions, 4392 flow [2024-11-13 13:47:59,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 361 transitions, 4226 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-11-13 13:47:59,284 INFO L231 Difference]: Finished difference. Result has 335 places, 318 transitions, 3262 flow [2024-11-13 13:47:59,284 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3096, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3262, PETRI_PLACES=335, PETRI_TRANSITIONS=318} [2024-11-13 13:47:59,285 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 274 predicate places. [2024-11-13 13:47:59,285 INFO L471 AbstractCegarLoop]: Abstraction has has 335 places, 318 transitions, 3262 flow [2024-11-13 13:47:59,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:47:59,285 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:47:59,285 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:47:59,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-11-13 13:47:59,285 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:47:59,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:59,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1945405515, now seen corresponding path program 40 times [2024-11-13 13:47:59,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:59,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387502350] [2024-11-13 13:47:59,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:59,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:59,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:59,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:47:59,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:59,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387502350] [2024-11-13 13:47:59,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387502350] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:47:59,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:47:59,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:47:59,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957420885] [2024-11-13 13:47:59,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:47:59,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:47:59,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:59,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:47:59,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:47:59,833 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-13 13:47:59,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 318 transitions, 3262 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:47:59,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:47:59,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-13 13:47:59,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:48:02,335 INFO L124 PetriNetUnfolderBase]: 4509/8175 cut-off events. [2024-11-13 13:48:02,335 INFO L125 PetriNetUnfolderBase]: For 236725/237022 co-relation queries the response was YES. [2024-11-13 13:48:02,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40446 conditions, 8175 events. 4509/8175 cut-off events. For 236725/237022 co-relation queries the response was YES. Maximal size of possible extension queue 704. Compared 64117 event pairs, 2086 based on Foata normal form. 80/7987 useless extension candidates. Maximal degree in co-relation 40266. Up to 6716 conditions per place. [2024-11-13 13:48:02,460 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 317 selfloop transitions, 41 changer transitions 4/369 dead transitions. [2024-11-13 13:48:02,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 369 transitions, 4435 flow [2024-11-13 13:48:02,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:48:02,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 13:48:02,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 277 transitions. [2024-11-13 13:48:02,462 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40615835777126097 [2024-11-13 13:48:02,462 INFO L175 Difference]: Start difference. First operand has 335 places, 318 transitions, 3262 flow. Second operand 11 states and 277 transitions. [2024-11-13 13:48:02,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 369 transitions, 4435 flow [2024-11-13 13:48:03,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 369 transitions, 4269 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-11-13 13:48:03,141 INFO L231 Difference]: Finished difference. Result has 339 places, 322 transitions, 3286 flow [2024-11-13 13:48:03,142 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3096, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3286, PETRI_PLACES=339, PETRI_TRANSITIONS=322} [2024-11-13 13:48:03,142 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 278 predicate places. [2024-11-13 13:48:03,142 INFO L471 AbstractCegarLoop]: Abstraction has has 339 places, 322 transitions, 3286 flow [2024-11-13 13:48:03,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:48:03,142 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:48:03,142 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:48:03,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-11-13 13:48:03,142 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:48:03,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:48:03,143 INFO L85 PathProgramCache]: Analyzing trace with hash 938438009, now seen corresponding path program 41 times [2024-11-13 13:48:03,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:48:03,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611006184] [2024-11-13 13:48:03,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:48:03,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:48:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:03,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:48:03,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:48:03,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611006184] [2024-11-13 13:48:03,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611006184] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:48:03,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:48:03,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:48:03,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092123142] [2024-11-13 13:48:03,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:48:03,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:48:03,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:48:03,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:48:03,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:48:03,887 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-13 13:48:03,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 322 transitions, 3286 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:48:03,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:48:03,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-13 13:48:03,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:48:06,399 INFO L124 PetriNetUnfolderBase]: 4509/8167 cut-off events. [2024-11-13 13:48:06,399 INFO L125 PetriNetUnfolderBase]: For 235998/236295 co-relation queries the response was YES. [2024-11-13 13:48:06,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40413 conditions, 8167 events. 4509/8167 cut-off events. For 235998/236295 co-relation queries the response was YES. Maximal size of possible extension queue 704. Compared 63986 event pairs, 2129 based on Foata normal form. 72/7965 useless extension candidates. Maximal degree in co-relation 40231. Up to 6794 conditions per place. [2024-11-13 13:48:06,567 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 320 selfloop transitions, 35 changer transitions 3/365 dead transitions. [2024-11-13 13:48:06,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 365 transitions, 4354 flow [2024-11-13 13:48:06,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:48:06,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 13:48:06,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 268 transitions. [2024-11-13 13:48:06,569 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-11-13 13:48:06,569 INFO L175 Difference]: Start difference. First operand has 339 places, 322 transitions, 3286 flow. Second operand 11 states and 268 transitions. [2024-11-13 13:48:06,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 365 transitions, 4354 flow [2024-11-13 13:48:07,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 365 transitions, 4168 flow, removed 54 selfloop flow, removed 8 redundant places. [2024-11-13 13:48:07,307 INFO L231 Difference]: Finished difference. Result has 343 places, 324 transitions, 3194 flow [2024-11-13 13:48:07,308 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3100, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3194, PETRI_PLACES=343, PETRI_TRANSITIONS=324} [2024-11-13 13:48:07,308 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 282 predicate places. [2024-11-13 13:48:07,308 INFO L471 AbstractCegarLoop]: Abstraction has has 343 places, 324 transitions, 3194 flow [2024-11-13 13:48:07,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:48:07,308 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:48:07,308 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:48:07,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-11-13 13:48:07,308 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:48:07,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:48:07,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1127285299, now seen corresponding path program 1 times [2024-11-13 13:48:07,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:48:07,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456552517] [2024-11-13 13:48:07,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:48:07,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:48:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:07,574 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:48:07,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:48:07,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456552517] [2024-11-13 13:48:07,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456552517] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:48:07,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508748305] [2024-11-13 13:48:07,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:48:07,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:07,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46ba25b-2400-46a9-b204-c42246106745/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:48:07,577 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46ba25b-2400-46a9-b204-c42246106745/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:48:07,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46ba25b-2400-46a9-b204-c42246106745/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 13:48:07,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:07,708 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 13:48:07,709 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:48:07,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:48:07,818 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:48:07,954 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:48:07,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508748305] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:48:07,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:48:07,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2024-11-13 13:48:07,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185848651] [2024-11-13 13:48:07,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:48:07,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 13:48:07,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:48:07,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 13:48:07,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-11-13 13:48:08,001 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-13 13:48:08,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 324 transitions, 3194 flow. Second operand has 14 states, 14 states have (on average 20.857142857142858) internal successors, (292), 14 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:48:08,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:48:08,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-13 13:48:08,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:48:12,588 INFO L124 PetriNetUnfolderBase]: 7587/14474 cut-off events. [2024-11-13 13:48:12,588 INFO L125 PetriNetUnfolderBase]: For 468133/468946 co-relation queries the response was YES. [2024-11-13 13:48:12,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72948 conditions, 14474 events. 7587/14474 cut-off events. For 468133/468946 co-relation queries the response was YES. Maximal size of possible extension queue 1225. Compared 131021 event pairs, 4271 based on Foata normal form. 400/14290 useless extension candidates. Maximal degree in co-relation 72508. Up to 6155 conditions per place. [2024-11-13 13:48:12,871 INFO L140 encePairwiseOnDemand]: 53/62 looper letters, 538 selfloop transitions, 14 changer transitions 18/616 dead transitions. [2024-11-13 13:48:12,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 616 transitions, 7460 flow [2024-11-13 13:48:12,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 13:48:12,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-13 13:48:12,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 214 transitions. [2024-11-13 13:48:12,872 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4314516129032258 [2024-11-13 13:48:12,872 INFO L175 Difference]: Start difference. First operand has 343 places, 324 transitions, 3194 flow. Second operand 8 states and 214 transitions. [2024-11-13 13:48:12,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 616 transitions, 7460 flow [2024-11-13 13:48:14,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 616 transitions, 7306 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-11-13 13:48:14,024 INFO L231 Difference]: Finished difference. Result has 347 places, 332 transitions, 3236 flow [2024-11-13 13:48:14,024 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3126, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3236, PETRI_PLACES=347, PETRI_TRANSITIONS=332} [2024-11-13 13:48:14,025 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 286 predicate places. [2024-11-13 13:48:14,025 INFO L471 AbstractCegarLoop]: Abstraction has has 347 places, 332 transitions, 3236 flow [2024-11-13 13:48:14,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.857142857142858) internal successors, (292), 14 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:48:14,025 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:48:14,025 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:48:14,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46ba25b-2400-46a9-b204-c42246106745/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 13:48:14,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46ba25b-2400-46a9-b204-c42246106745/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:14,226 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:48:14,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:48:14,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1049330145, now seen corresponding path program 1 times [2024-11-13 13:48:14,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:48:14,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068137244] [2024-11-13 13:48:14,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:48:14,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:48:14,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:14,317 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:48:14,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:48:14,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068137244] [2024-11-13 13:48:14,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068137244] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:48:14,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840101629] [2024-11-13 13:48:14,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:48:14,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:14,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46ba25b-2400-46a9-b204-c42246106745/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:48:14,320 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46ba25b-2400-46a9-b204-c42246106745/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:48:14,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46ba25b-2400-46a9-b204-c42246106745/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 13:48:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:14,447 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 13:48:14,450 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:48:14,504 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:48:14,504 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:48:14,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840101629] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:48:14,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:48:14,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-13 13:48:14,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956808129] [2024-11-13 13:48:14,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:48:14,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:48:14,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:48:14,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:48:14,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:48:14,506 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-13 13:48:14,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 332 transitions, 3236 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:48:14,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:48:14,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-13 13:48:14,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:48:19,015 INFO L124 PetriNetUnfolderBase]: 8422/16203 cut-off events. [2024-11-13 13:48:19,015 INFO L125 PetriNetUnfolderBase]: For 662706/664474 co-relation queries the response was YES. [2024-11-13 13:48:19,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86129 conditions, 16203 events. 8422/16203 cut-off events. For 662706/664474 co-relation queries the response was YES. Maximal size of possible extension queue 1340. Compared 150079 event pairs, 3150 based on Foata normal form. 990/16683 useless extension candidates. Maximal degree in co-relation 85511. Up to 6794 conditions per place. [2024-11-13 13:48:19,472 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 431 selfloop transitions, 34 changer transitions 0/511 dead transitions. [2024-11-13 13:48:19,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 511 transitions, 6256 flow [2024-11-13 13:48:19,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:48:19,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:48:19,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2024-11-13 13:48:19,473 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5483870967741935 [2024-11-13 13:48:19,473 INFO L175 Difference]: Start difference. First operand has 347 places, 332 transitions, 3236 flow. Second operand 4 states and 136 transitions. [2024-11-13 13:48:19,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 511 transitions, 6256 flow [2024-11-13 13:48:21,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 511 transitions, 6236 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-11-13 13:48:21,357 INFO L231 Difference]: Finished difference. Result has 349 places, 343 transitions, 3595 flow [2024-11-13 13:48:21,357 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3164, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3595, PETRI_PLACES=349, PETRI_TRANSITIONS=343} [2024-11-13 13:48:21,357 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 288 predicate places. [2024-11-13 13:48:21,357 INFO L471 AbstractCegarLoop]: Abstraction has has 349 places, 343 transitions, 3595 flow [2024-11-13 13:48:21,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:48:21,358 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:48:21,358 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:48:21,372 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46ba25b-2400-46a9-b204-c42246106745/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 13:48:21,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46ba25b-2400-46a9-b204-c42246106745/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:21,558 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 13:48:21,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:48:21,559 INFO L85 PathProgramCache]: Analyzing trace with hash 682244298, now seen corresponding path program 2 times [2024-11-13 13:48:21,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:48:21,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146078385] [2024-11-13 13:48:21,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:48:21,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:48:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:21,928 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:48:21,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:48:21,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146078385] [2024-11-13 13:48:21,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146078385] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:48:21,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227625415] [2024-11-13 13:48:21,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:48:21,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:21,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46ba25b-2400-46a9-b204-c42246106745/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:48:21,932 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46ba25b-2400-46a9-b204-c42246106745/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:48:21,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46ba25b-2400-46a9-b204-c42246106745/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 13:48:22,087 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:48:22,087 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:48:22,089 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-13 13:48:22,091 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:48:22,371 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:48:22,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 15 [2024-11-13 13:48:22,582 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:48:22,583 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:48:22,794 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-13 13:48:22,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 11 [2024-11-13 13:48:23,060 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:48:23,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227625415] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:48:23,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:48:23,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-13 13:48:23,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381435147] [2024-11-13 13:48:23,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:48:23,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 13:48:23,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:48:23,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 13:48:23,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2024-11-13 13:48:23,194 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-13 13:48:23,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 343 transitions, 3595 flow. Second operand has 22 states, 22 states have (on average 18.863636363636363) internal successors, (415), 22 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:48:23,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:48:23,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-13 13:48:23,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand