./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 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml', '-i', '../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux', '--witnessprinter.witness.filename', 'witness', '--witnessprinter.write.witness.besides.input.file', 'false', '--witnessprinter.graph.data.specification', 'CHECK( init(main()), LTL(G valid-free) )\nCHECK( init(main()), LTL(G valid-deref) )\nCHECK( init(main()), LTL(G valid-memtrack) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', '5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --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-?-4f9af40 [2024-11-07 19:36:32,284 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 19:36:32,369 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-07 19:36:32,375 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 19:36:32,375 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 19:36:32,395 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 19:36:32,396 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 19:36:32,396 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 19:36:32,396 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 19:36:32,396 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 19:36:32,396 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 19:36:32,396 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 19:36:32,396 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 19:36:32,396 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 19:36:32,397 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 19:36:32,397 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 19:36:32,397 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 19:36:32,397 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 19:36:32,397 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 19:36:32,397 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 19:36:32,397 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-07 19:36:32,397 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-07 19:36:32,397 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-07 19:36:32,397 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 19:36:32,397 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-07 19:36:32,397 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 19:36:32,397 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 19:36:32,397 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 19:36:32,398 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 19:36:32,398 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 19:36:32,398 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 19:36:32,398 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 19:36:32,398 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 19:36:32,398 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:36:32,398 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 19:36:32,399 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 19:36:32,400 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 19:36:32,400 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 19:36:32,400 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 19:36:32,400 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 19:36:32,400 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 19:36:32,400 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 19:36:32,400 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 -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux 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 [2024-11-07 19:36:32,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 19:36:32,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 19:36:32,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 19:36:32,641 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 19:36:32,641 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 19:36:32,641 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2024-11-07 19:36:33,740 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 19:36:33,935 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 19:36:33,936 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2024-11-07 19:36:33,943 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/77d975023/b2bdc305e244400d8d1d16efe1566966/FLAGce79d5939 [2024-11-07 19:36:34,297 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/77d975023/b2bdc305e244400d8d1d16efe1566966 [2024-11-07 19:36:34,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 19:36:34,300 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 19:36:34,301 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 19:36:34,301 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 19:36:34,303 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 19:36:34,304 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:36:34" (1/1) ... [2024-11-07 19:36:34,304 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14cf8b74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:36:34, skipping insertion in model container [2024-11-07 19:36:34,305 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:36:34" (1/1) ... [2024-11-07 19:36:34,314 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 19:36:34,433 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-07 19:36:34,435 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:36:34,444 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 19:36:34,466 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:36:34,478 INFO L204 MainTranslator]: Completed translation [2024-11-07 19:36:34,479 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:36:34 WrapperNode [2024-11-07 19:36:34,479 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 19:36:34,480 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 19:36:34,480 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 19:36:34,480 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 19:36:34,484 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:36:34" (1/1) ... [2024-11-07 19:36:34,492 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:36:34" (1/1) ... [2024-11-07 19:36:34,517 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 17, calls inlined = 19, statements flattened = 254 [2024-11-07 19:36:34,517 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 19:36:34,518 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 19:36:34,518 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 19:36:34,518 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 19:36:34,524 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:36:34" (1/1) ... [2024-11-07 19:36:34,524 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:36:34" (1/1) ... [2024-11-07 19:36:34,531 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:36:34" (1/1) ... [2024-11-07 19:36:34,541 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]. [2024-11-07 19:36:34,541 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:36:34" (1/1) ... [2024-11-07 19:36:34,541 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:36:34" (1/1) ... [2024-11-07 19:36:34,546 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:36:34" (1/1) ... [2024-11-07 19:36:34,550 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:36:34" (1/1) ... [2024-11-07 19:36:34,551 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:36:34" (1/1) ... [2024-11-07 19:36:34,555 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:36:34" (1/1) ... [2024-11-07 19:36:34,557 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 19:36:34,558 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 19:36:34,558 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 19:36:34,558 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 19:36:34,561 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:36:34" (1/1) ... [2024-11-07 19:36:34,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:36:34,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:36:34,586 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-07 19:36:34,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-07 19:36:34,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 19:36:34,604 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-07 19:36:34,605 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-07 19:36:34,605 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-07 19:36:34,605 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-07 19:36:34,605 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-07 19:36:34,605 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-07 19:36:34,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 19:36:34,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 19:36:34,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 19:36:34,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 19:36:34,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-07 19:36:34,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-07 19:36:34,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-07 19:36:34,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 19:36:34,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 19:36:34,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 19:36:34,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 19:36:34,607 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-07 19:36:34,683 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 19:36:34,685 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 19:36:34,998 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 19:36:34,998 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 19:36:35,276 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 19:36:35,276 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-07 19:36:35,276 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:36:35 BoogieIcfgContainer [2024-11-07 19:36:35,276 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 19:36:35,278 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 19:36:35,278 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 19:36:35,282 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 19:36:35,282 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:36:34" (1/3) ... [2024-11-07 19:36:35,283 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f9fa34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:36:35, skipping insertion in model container [2024-11-07 19:36:35,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:36:34" (2/3) ... [2024-11-07 19:36:35,283 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f9fa34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:36:35, skipping insertion in model container [2024-11-07 19:36:35,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:36:35" (3/3) ... [2024-11-07 19:36:35,284 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2024-11-07 19:36:35,296 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 19:36:35,296 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-11-07 19:36:35,296 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 19:36:35,346 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-07 19:36:35,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 62 transitions, 145 flow [2024-11-07 19:36:35,401 INFO L124 PetriNetUnfolderBase]: 7/59 cut-off events. [2024-11-07 19:36:35,403 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-07 19:36:35,405 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. [2024-11-07 19:36:35,405 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 62 transitions, 145 flow [2024-11-07 19:36:35,409 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 58 transitions, 134 flow [2024-11-07 19:36:35,415 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:36:35,425 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;@479462f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:36:35,425 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-11-07 19:36:35,428 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:36:35,428 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-11-07 19:36:35,428 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:36:35,428 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:36:35,428 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-07 19:36:35,429 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:36:35,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:36:35,433 INFO L85 PathProgramCache]: Analyzing trace with hash 759561, now seen corresponding path program 1 times [2024-11-07 19:36:35,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:36:35,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343285977] [2024-11-07 19:36:35,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:36:35,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:36:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:36:35,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:36:35,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:36:35,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343285977] [2024-11-07 19:36:35,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343285977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:36:35,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:36:35,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 19:36:35,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060324472] [2024-11-07 19:36:35,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:36:35,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:36:35,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:36:35,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:36:35,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:36:35,641 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-07 19:36:35,643 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) [2024-11-07 19:36:35,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:36:35,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-07 19:36:35,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:36:36,299 INFO L124 PetriNetUnfolderBase]: 4012/6158 cut-off events. [2024-11-07 19:36:36,299 INFO L125 PetriNetUnfolderBase]: For 304/304 co-relation queries the response was YES. [2024-11-07 19:36:36,315 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 37744 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. [2024-11-07 19:36:36,346 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 40 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2024-11-07 19:36:36,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 52 transitions, 206 flow [2024-11-07 19:36:36,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:36:36,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:36:36,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-11-07 19:36:36,358 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.478494623655914 [2024-11-07 19:36:36,359 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 134 flow. Second operand 3 states and 89 transitions. [2024-11-07 19:36:36,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 52 transitions, 206 flow [2024-11-07 19:36:36,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 52 transitions, 194 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-07 19:36:36,371 INFO L231 Difference]: Finished difference. Result has 53 places, 52 transitions, 114 flow [2024-11-07 19:36:36,373 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} [2024-11-07 19:36:36,375 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, -8 predicate places. [2024-11-07 19:36:36,375 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 52 transitions, 114 flow [2024-11-07 19:36:36,375 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) [2024-11-07 19:36:36,375 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:36:36,375 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-07 19:36:36,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 19:36:36,375 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:36:36,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:36:36,376 INFO L85 PathProgramCache]: Analyzing trace with hash 759562, now seen corresponding path program 1 times [2024-11-07 19:36:36,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:36:36,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065292073] [2024-11-07 19:36:36,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:36:36,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:36:36,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:36:36,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:36:36,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:36:36,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065292073] [2024-11-07 19:36:36,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065292073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:36:36,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:36:36,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:36:36,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141570745] [2024-11-07 19:36:36,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:36:36,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:36:36,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:36:36,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:36:36,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:36:36,652 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-07 19:36:36,652 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) [2024-11-07 19:36:36,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:36:36,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-07 19:36:36,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:36:37,106 INFO L124 PetriNetUnfolderBase]: 4013/6161 cut-off events. [2024-11-07 19:36:37,107 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-11-07 19:36:37,114 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. [2024-11-07 19:36:37,135 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 43 selfloop transitions, 4 changer transitions 0/55 dead transitions. [2024-11-07 19:36:37,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 214 flow [2024-11-07 19:36:37,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:36:37,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:36:37,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-11-07 19:36:37,138 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-11-07 19:36:37,138 INFO L175 Difference]: Start difference. First operand has 53 places, 52 transitions, 114 flow. Second operand 4 states and 104 transitions. [2024-11-07 19:36:37,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 214 flow [2024-11-07 19:36:37,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 55 transitions, 210 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 19:36:37,140 INFO L231 Difference]: Finished difference. Result has 56 places, 55 transitions, 137 flow [2024-11-07 19:36:37,141 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} [2024-11-07 19:36:37,142 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, -5 predicate places. [2024-11-07 19:36:37,142 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 55 transitions, 137 flow [2024-11-07 19:36:37,142 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) [2024-11-07 19:36:37,142 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:36:37,142 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-07 19:36:37,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 19:36:37,143 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:36:37,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:36:37,144 INFO L85 PathProgramCache]: Analyzing trace with hash 23547245, now seen corresponding path program 1 times [2024-11-07 19:36:37,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:36:37,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141209927] [2024-11-07 19:36:37,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:36:37,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:36:37,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:36:37,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:36:37,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:36:37,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141209927] [2024-11-07 19:36:37,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141209927] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:36:37,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:36:37,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:36:37,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484972456] [2024-11-07 19:36:37,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:36:37,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 19:36:37,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:36:37,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 19:36:37,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 19:36:37,370 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-07 19:36:37,371 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) [2024-11-07 19:36:37,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:36:37,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-07 19:36:37,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:36:37,901 INFO L124 PetriNetUnfolderBase]: 4014/6164 cut-off events. [2024-11-07 19:36:37,901 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-11-07 19:36:37,909 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. [2024-11-07 19:36:37,935 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 43 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2024-11-07 19:36:37,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 58 transitions, 243 flow [2024-11-07 19:36:37,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 19:36:37,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 19:36:37,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-11-07 19:36:37,937 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-11-07 19:36:37,937 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 137 flow. Second operand 5 states and 121 transitions. [2024-11-07 19:36:37,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 58 transitions, 243 flow [2024-11-07 19:36:37,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 58 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:36:37,938 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 171 flow [2024-11-07 19:36:37,938 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} [2024-11-07 19:36:37,939 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 0 predicate places. [2024-11-07 19:36:37,939 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 171 flow [2024-11-07 19:36:37,939 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) [2024-11-07 19:36:37,939 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:36:37,939 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-11-07 19:36:37,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 19:36:37,939 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:36:37,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:36:37,940 INFO L85 PathProgramCache]: Analyzing trace with hash 729963479, now seen corresponding path program 1 times [2024-11-07 19:36:37,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:36:37,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947329158] [2024-11-07 19:36:37,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:36:37,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:36:37,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:36:38,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:36:38,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:36:38,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947329158] [2024-11-07 19:36:38,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947329158] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:36:38,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692156874] [2024-11-07 19:36:38,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:36:38,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:36:38,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:36:38,136 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:36:38,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-07 19:36:38,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:36:38,202 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-07 19:36:38,207 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:36:38,261 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 [2024-11-07 19:36:38,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:36:38,420 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:36:38,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:36:38,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692156874] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:36:38,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:36:38,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-07 19:36:38,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579369413] [2024-11-07 19:36:38,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:36:38,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:36:38,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:36:38,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:36:38,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:36:38,546 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-07 19:36:38,547 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) [2024-11-07 19:36:38,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:36:38,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-07 19:36:38,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:36:39,093 INFO L124 PetriNetUnfolderBase]: 4015/6166 cut-off events. [2024-11-07 19:36:39,094 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2024-11-07 19:36:39,102 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. [2024-11-07 19:36:39,119 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 41 selfloop transitions, 11 changer transitions 0/60 dead transitions. [2024-11-07 19:36:39,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 60 transitions, 286 flow [2024-11-07 19:36:39,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 19:36:39,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 19:36:39,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-11-07 19:36:39,121 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3172043010752688 [2024-11-07 19:36:39,121 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 171 flow. Second operand 9 states and 177 transitions. [2024-11-07 19:36:39,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 60 transitions, 286 flow [2024-11-07 19:36:39,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 60 transitions, 285 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:36:39,122 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 203 flow [2024-11-07 19:36:39,122 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} [2024-11-07 19:36:39,123 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 6 predicate places. [2024-11-07 19:36:39,123 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 203 flow [2024-11-07 19:36:39,123 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) [2024-11-07 19:36:39,123 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:36:39,123 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-07 19:36:39,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-07 19:36:39,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:36:39,324 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:36:39,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:36:39,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1154089852, now seen corresponding path program 1 times [2024-11-07 19:36:39,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:36:39,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543478436] [2024-11-07 19:36:39,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:36:39,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:36:39,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:36:39,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:36:39,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:36:39,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543478436] [2024-11-07 19:36:39,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543478436] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:36:39,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092689600] [2024-11-07 19:36:39,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:36:39,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:36:39,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:36:39,498 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:36:39,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-07 19:36:39,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:36:39,560 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-07 19:36:39,562 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:36:39,581 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 [2024-11-07 19:36:39,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:36:39,665 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:36:39,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:36:39,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092689600] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:36:39,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:36:39,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2024-11-07 19:36:39,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127534551] [2024-11-07 19:36:39,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:36:39,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-07 19:36:39,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:36:39,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-07 19:36:39,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-07 19:36:39,812 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-07 19:36:39,813 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) [2024-11-07 19:36:39,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:36:39,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-07 19:36:39,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:36:40,333 INFO L124 PetriNetUnfolderBase]: 4016/6168 cut-off events. [2024-11-07 19:36:40,334 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2024-11-07 19:36:40,342 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. [2024-11-07 19:36:40,355 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 36 selfloop transitions, 18 changer transitions 0/62 dead transitions. [2024-11-07 19:36:40,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 62 transitions, 317 flow [2024-11-07 19:36:40,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 19:36:40,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 19:36:40,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-11-07 19:36:40,357 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32616487455197135 [2024-11-07 19:36:40,357 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 203 flow. Second operand 9 states and 182 transitions. [2024-11-07 19:36:40,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 62 transitions, 317 flow [2024-11-07 19:36:40,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 62 transitions, 270 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-11-07 19:36:40,358 INFO L231 Difference]: Finished difference. Result has 65 places, 62 transitions, 198 flow [2024-11-07 19:36:40,358 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} [2024-11-07 19:36:40,359 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 4 predicate places. [2024-11-07 19:36:40,359 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 62 transitions, 198 flow [2024-11-07 19:36:40,359 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) [2024-11-07 19:36:40,359 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:36:40,359 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:36:40,372 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-07 19:36:40,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:36:40,560 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:36:40,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:36:40,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1420350188, now seen corresponding path program 1 times [2024-11-07 19:36:40,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:36:40,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886291856] [2024-11-07 19:36:40,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:36:40,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:36:40,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:36:40,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:36:40,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:36:40,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886291856] [2024-11-07 19:36:40,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886291856] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:36:40,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:36:40,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:36:40,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854814800] [2024-11-07 19:36:40,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:36:40,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:36:40,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:36:40,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:36:40,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:36:40,631 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-07 19:36:40,631 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) [2024-11-07 19:36:40,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:36:40,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-07 19:36:40,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:36:41,056 INFO L124 PetriNetUnfolderBase]: 4177/6469 cut-off events. [2024-11-07 19:36:41,057 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-11-07 19:36:41,065 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. [2024-11-07 19:36:41,083 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 74 selfloop transitions, 3 changer transitions 1/86 dead transitions. [2024-11-07 19:36:41,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 86 transitions, 443 flow [2024-11-07 19:36:41,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:36:41,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:36:41,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2024-11-07 19:36:41,084 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5483870967741935 [2024-11-07 19:36:41,084 INFO L175 Difference]: Start difference. First operand has 65 places, 62 transitions, 198 flow. Second operand 4 states and 136 transitions. [2024-11-07 19:36:41,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 86 transitions, 443 flow [2024-11-07 19:36:41,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 86 transitions, 390 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-07 19:36:41,086 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 190 flow [2024-11-07 19:36:41,086 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} [2024-11-07 19:36:41,087 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 3 predicate places. [2024-11-07 19:36:41,087 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 190 flow [2024-11-07 19:36:41,087 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) [2024-11-07 19:36:41,087 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:36:41,087 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:36:41,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 19:36:41,087 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:36:41,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:36:41,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1436128967, now seen corresponding path program 1 times [2024-11-07 19:36:41,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:36:41,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771536890] [2024-11-07 19:36:41,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:36:41,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:36:41,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:36:41,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:36:41,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:36:41,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771536890] [2024-11-07 19:36:41,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771536890] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:36:41,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:36:41,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:36:41,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879009509] [2024-11-07 19:36:41,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:36:41,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 19:36:41,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:36:41,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 19:36:41,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 19:36:41,286 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-07 19:36:41,286 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) [2024-11-07 19:36:41,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:36:41,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-07 19:36:41,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:36:41,545 INFO L124 PetriNetUnfolderBase]: 3028/4665 cut-off events. [2024-11-07 19:36:41,546 INFO L125 PetriNetUnfolderBase]: For 436/436 co-relation queries the response was YES. [2024-11-07 19:36:41,552 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. [2024-11-07 19:36:41,564 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 47 selfloop transitions, 4 changer transitions 0/59 dead transitions. [2024-11-07 19:36:41,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 59 transitions, 280 flow [2024-11-07 19:36:41,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:36:41,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:36:41,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-11-07 19:36:41,566 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-11-07 19:36:41,566 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 190 flow. Second operand 4 states and 98 transitions. [2024-11-07 19:36:41,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 59 transitions, 280 flow [2024-11-07 19:36:41,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 59 transitions, 275 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 19:36:41,567 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 181 flow [2024-11-07 19:36:41,567 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} [2024-11-07 19:36:41,568 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 1 predicate places. [2024-11-07 19:36:41,568 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 181 flow [2024-11-07 19:36:41,568 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) [2024-11-07 19:36:41,568 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:36:41,568 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:36:41,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-07 19:36:41,568 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:36:41,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:36:41,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1436128968, now seen corresponding path program 1 times [2024-11-07 19:36:41,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:36:41,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943064817] [2024-11-07 19:36:41,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:36:41,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:36:41,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:36:41,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:36:41,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:36:41,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943064817] [2024-11-07 19:36:41,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943064817] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:36:41,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:36:41,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:36:41,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147592093] [2024-11-07 19:36:41,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:36:41,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:36:41,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:36:41,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:36:41,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:36:41,647 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-07 19:36:41,648 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) [2024-11-07 19:36:41,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:36:41,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-07 19:36:41,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:36:41,801 INFO L124 PetriNetUnfolderBase]: 2095/3259 cut-off events. [2024-11-07 19:36:41,801 INFO L125 PetriNetUnfolderBase]: For 386/386 co-relation queries the response was YES. [2024-11-07 19:36:41,805 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. [2024-11-07 19:36:41,812 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 41 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2024-11-07 19:36:41,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 56 transitions, 265 flow [2024-11-07 19:36:41,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 19:36:41,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 19:36:41,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2024-11-07 19:36:41,813 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-11-07 19:36:41,813 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 181 flow. Second operand 5 states and 109 transitions. [2024-11-07 19:36:41,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 56 transitions, 265 flow [2024-11-07 19:36:41,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 56 transitions, 260 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 19:36:41,814 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 178 flow [2024-11-07 19:36:41,815 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} [2024-11-07 19:36:41,815 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 0 predicate places. [2024-11-07 19:36:41,815 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 178 flow [2024-11-07 19:36:41,815 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) [2024-11-07 19:36:41,815 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:36:41,815 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:36:41,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-07 19:36:41,816 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:36:41,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:36:41,816 INFO L85 PathProgramCache]: Analyzing trace with hash 2069279750, now seen corresponding path program 1 times [2024-11-07 19:36:41,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:36:41,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553647271] [2024-11-07 19:36:41,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:36:41,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:36:41,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:36:41,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:36:41,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:36:41,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553647271] [2024-11-07 19:36:41,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553647271] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:36:41,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:36:41,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 19:36:41,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174607697] [2024-11-07 19:36:41,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:36:41,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:36:41,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:36:41,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:36:41,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:36:41,844 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-07 19:36:41,844 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) [2024-11-07 19:36:41,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:36:41,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-07 19:36:41,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:36:41,998 INFO L124 PetriNetUnfolderBase]: 1937/3073 cut-off events. [2024-11-07 19:36:41,999 INFO L125 PetriNetUnfolderBase]: For 424/424 co-relation queries the response was YES. [2024-11-07 19:36:42,002 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. [2024-11-07 19:36:42,007 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 60 selfloop transitions, 2 changer transitions 1/71 dead transitions. [2024-11-07 19:36:42,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 71 transitions, 342 flow [2024-11-07 19:36:42,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:36:42,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:36:42,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-11-07 19:36:42,008 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5483870967741935 [2024-11-07 19:36:42,008 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 178 flow. Second operand 3 states and 102 transitions. [2024-11-07 19:36:42,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 71 transitions, 342 flow [2024-11-07 19:36:42,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 71 transitions, 331 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-07 19:36:42,010 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 178 flow [2024-11-07 19:36:42,010 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} [2024-11-07 19:36:42,010 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 0 predicate places. [2024-11-07 19:36:42,010 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 178 flow [2024-11-07 19:36:42,010 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) [2024-11-07 19:36:42,010 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:36:42,010 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:36:42,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-07 19:36:42,010 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:36:42,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:36:42,011 INFO L85 PathProgramCache]: Analyzing trace with hash -2085322483, now seen corresponding path program 1 times [2024-11-07 19:36:42,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:36:42,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890224370] [2024-11-07 19:36:42,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:36:42,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:36:42,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:36:42,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:36:42,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:36:42,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890224370] [2024-11-07 19:36:42,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890224370] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:36:42,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:36:42,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:36:42,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186153158] [2024-11-07 19:36:42,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:36:42,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:36:42,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:36:42,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:36:42,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:36:42,052 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-07 19:36:42,052 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) [2024-11-07 19:36:42,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:36:42,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-07 19:36:42,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:36:42,212 INFO L124 PetriNetUnfolderBase]: 1665/2611 cut-off events. [2024-11-07 19:36:42,212 INFO L125 PetriNetUnfolderBase]: For 507/512 co-relation queries the response was YES. [2024-11-07 19:36:42,215 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. [2024-11-07 19:36:42,218 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 55 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2024-11-07 19:36:42,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 66 transitions, 320 flow [2024-11-07 19:36:42,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:36:42,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:36:42,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-11-07 19:36:42,220 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.510752688172043 [2024-11-07 19:36:42,220 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 178 flow. Second operand 3 states and 95 transitions. [2024-11-07 19:36:42,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 66 transitions, 320 flow [2024-11-07 19:36:42,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 66 transitions, 318 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:36:42,221 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 199 flow [2024-11-07 19:36:42,221 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} [2024-11-07 19:36:42,222 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 1 predicate places. [2024-11-07 19:36:42,223 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 199 flow [2024-11-07 19:36:42,223 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) [2024-11-07 19:36:42,223 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:36:42,223 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:36:42,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-07 19:36:42,224 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:36:42,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:36:42,224 INFO L85 PathProgramCache]: Analyzing trace with hash 372111769, now seen corresponding path program 1 times [2024-11-07 19:36:42,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:36:42,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465416436] [2024-11-07 19:36:42,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:36:42,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:36:42,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:36:42,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:36:42,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:36:42,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465416436] [2024-11-07 19:36:42,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465416436] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:36:42,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:36:42,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:36:42,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697388855] [2024-11-07 19:36:42,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:36:42,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:36:42,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:36:42,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:36:42,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:36:42,307 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-07 19:36:42,308 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) [2024-11-07 19:36:42,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:36:42,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-07 19:36:42,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:36:42,486 INFO L124 PetriNetUnfolderBase]: 1906/3090 cut-off events. [2024-11-07 19:36:42,487 INFO L125 PetriNetUnfolderBase]: For 1627/1627 co-relation queries the response was YES. [2024-11-07 19:36:42,491 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. [2024-11-07 19:36:42,498 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 46 selfloop transitions, 3 changer transitions 19/76 dead transitions. [2024-11-07 19:36:42,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 76 transitions, 397 flow [2024-11-07 19:36:42,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:36:42,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:36:42,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-11-07 19:36:42,500 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49193548387096775 [2024-11-07 19:36:42,500 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 199 flow. Second operand 4 states and 122 transitions. [2024-11-07 19:36:42,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 76 transitions, 397 flow [2024-11-07 19:36:42,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 76 transitions, 372 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-11-07 19:36:42,502 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 193 flow [2024-11-07 19:36:42,503 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} [2024-11-07 19:36:42,503 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 3 predicate places. [2024-11-07 19:36:42,503 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 193 flow [2024-11-07 19:36:42,503 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) [2024-11-07 19:36:42,503 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:36:42,503 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:36:42,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-07 19:36:42,504 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:36:42,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:36:42,504 INFO L85 PathProgramCache]: Analyzing trace with hash 699230762, now seen corresponding path program 1 times [2024-11-07 19:36:42,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:36:42,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813190132] [2024-11-07 19:36:42,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:36:42,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:36:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:36:42,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:36:42,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:36:42,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813190132] [2024-11-07 19:36:42,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813190132] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:36:42,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867033925] [2024-11-07 19:36:42,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:36:42,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:36:42,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:36:42,673 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:36:42,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-07 19:36:42,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:36:42,742 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-07 19:36:42,743 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:36:42,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:36:42,814 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 19:36:42,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867033925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:36:42,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 19:36:42,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-07 19:36:42,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810966583] [2024-11-07 19:36:42,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:36:42,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 19:36:42,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:36:42,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 19:36:42,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-07 19:36:42,828 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-07 19:36:42,828 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) [2024-11-07 19:36:42,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:36:42,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-07 19:36:42,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:36:42,960 INFO L124 PetriNetUnfolderBase]: 1256/2044 cut-off events. [2024-11-07 19:36:42,961 INFO L125 PetriNetUnfolderBase]: For 577/577 co-relation queries the response was YES. [2024-11-07 19:36:42,963 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. [2024-11-07 19:36:42,968 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 43 selfloop transitions, 4 changer transitions 0/55 dead transitions. [2024-11-07 19:36:42,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 55 transitions, 279 flow [2024-11-07 19:36:42,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:36:42,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:36:42,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-11-07 19:36:42,969 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-11-07 19:36:42,969 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 193 flow. Second operand 4 states and 100 transitions. [2024-11-07 19:36:42,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 55 transitions, 279 flow [2024-11-07 19:36:42,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 55 transitions, 272 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-07 19:36:42,970 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 186 flow [2024-11-07 19:36:42,970 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} [2024-11-07 19:36:42,971 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 1 predicate places. [2024-11-07 19:36:42,971 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 186 flow [2024-11-07 19:36:42,971 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) [2024-11-07 19:36:42,971 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:36:42,971 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:36:42,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-07 19:36:43,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:36:43,172 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:36:43,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:36:43,172 INFO L85 PathProgramCache]: Analyzing trace with hash 699230761, now seen corresponding path program 1 times [2024-11-07 19:36:43,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:36:43,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349829069] [2024-11-07 19:36:43,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:36:43,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:36:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:36:43,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:36:43,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:36:43,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349829069] [2024-11-07 19:36:43,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349829069] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:36:43,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:36:43,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:36:43,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464995448] [2024-11-07 19:36:43,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:36:43,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:36:43,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:36:43,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:36:43,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:36:43,235 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-07 19:36:43,236 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) [2024-11-07 19:36:43,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:36:43,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-07 19:36:43,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:36:43,339 INFO L124 PetriNetUnfolderBase]: 902/1526 cut-off events. [2024-11-07 19:36:43,339 INFO L125 PetriNetUnfolderBase]: For 352/352 co-relation queries the response was YES. [2024-11-07 19:36:43,341 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. [2024-11-07 19:36:43,343 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 42 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2024-11-07 19:36:43,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 53 transitions, 270 flow [2024-11-07 19:36:43,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:36:43,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:36:43,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions. [2024-11-07 19:36:43,344 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-11-07 19:36:43,344 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 186 flow. Second operand 4 states and 90 transitions. [2024-11-07 19:36:43,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 53 transitions, 270 flow [2024-11-07 19:36:43,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 53 transitions, 264 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 19:36:43,345 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 180 flow [2024-11-07 19:36:43,345 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} [2024-11-07 19:36:43,346 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 0 predicate places. [2024-11-07 19:36:43,346 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 180 flow [2024-11-07 19:36:43,346 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) [2024-11-07 19:36:43,346 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:36:43,346 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] [2024-11-07 19:36:43,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-07 19:36:43,346 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:36:43,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:36:43,346 INFO L85 PathProgramCache]: Analyzing trace with hash -68022964, now seen corresponding path program 1 times [2024-11-07 19:36:43,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:36:43,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445532883] [2024-11-07 19:36:43,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:36:43,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:36:43,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:36:43,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:36:43,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:36:43,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445532883] [2024-11-07 19:36:43,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445532883] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:36:43,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:36:43,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 19:36:43,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143053362] [2024-11-07 19:36:43,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:36:43,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:36:43,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:36:43,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:36:43,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:36:43,943 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-07 19:36:43,944 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) [2024-11-07 19:36:43,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:36:43,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-07 19:36:43,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:36:44,318 INFO L124 PetriNetUnfolderBase]: 1304/2220 cut-off events. [2024-11-07 19:36:44,318 INFO L125 PetriNetUnfolderBase]: For 461/461 co-relation queries the response was YES. [2024-11-07 19:36:44,322 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. [2024-11-07 19:36:44,326 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 108 selfloop transitions, 26 changer transitions 3/144 dead transitions. [2024-11-07 19:36:44,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 144 transitions, 701 flow [2024-11-07 19:36:44,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 19:36:44,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-07 19:36:44,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 307 transitions. [2024-11-07 19:36:44,328 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41263440860215056 [2024-11-07 19:36:44,328 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 180 flow. Second operand 12 states and 307 transitions. [2024-11-07 19:36:44,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 144 transitions, 701 flow [2024-11-07 19:36:44,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 144 transitions, 697 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 19:36:44,329 INFO L231 Difference]: Finished difference. Result has 75 places, 75 transitions, 314 flow [2024-11-07 19:36:44,329 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} [2024-11-07 19:36:44,330 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 14 predicate places. [2024-11-07 19:36:44,330 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 75 transitions, 314 flow [2024-11-07 19:36:44,330 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) [2024-11-07 19:36:44,330 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:36:44,330 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] [2024-11-07 19:36:44,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-07 19:36:44,330 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:36:44,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:36:44,330 INFO L85 PathProgramCache]: Analyzing trace with hash -2086380966, now seen corresponding path program 2 times [2024-11-07 19:36:44,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:36:44,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933111557] [2024-11-07 19:36:44,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:36:44,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:36:44,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:36:44,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:36:44,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:36:44,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933111557] [2024-11-07 19:36:44,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933111557] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:36:44,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:36:44,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 19:36:44,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268774774] [2024-11-07 19:36:44,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:36:44,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:36:44,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:36:44,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:36:44,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:36:44,873 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-07 19:36:44,874 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) [2024-11-07 19:36:44,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:36:44,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-07 19:36:44,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:36:45,289 INFO L124 PetriNetUnfolderBase]: 1474/2573 cut-off events. [2024-11-07 19:36:45,289 INFO L125 PetriNetUnfolderBase]: For 1567/1567 co-relation queries the response was YES. [2024-11-07 19:36:45,294 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. [2024-11-07 19:36:45,300 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 107 selfloop transitions, 34 changer transitions 3/151 dead transitions. [2024-11-07 19:36:45,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 151 transitions, 889 flow [2024-11-07 19:36:45,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 19:36:45,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 19:36:45,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 281 transitions. [2024-11-07 19:36:45,303 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4120234604105572 [2024-11-07 19:36:45,303 INFO L175 Difference]: Start difference. First operand has 75 places, 75 transitions, 314 flow. Second operand 11 states and 281 transitions. [2024-11-07 19:36:45,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 151 transitions, 889 flow [2024-11-07 19:36:45,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 151 transitions, 882 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 19:36:45,306 INFO L231 Difference]: Finished difference. Result has 90 places, 96 transitions, 539 flow [2024-11-07 19:36:45,307 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} [2024-11-07 19:36:45,307 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 29 predicate places. [2024-11-07 19:36:45,307 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 96 transitions, 539 flow [2024-11-07 19:36:45,308 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) [2024-11-07 19:36:45,308 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:36:45,308 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] [2024-11-07 19:36:45,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-07 19:36:45,308 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:36:45,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:36:45,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1511651402, now seen corresponding path program 3 times [2024-11-07 19:36:45,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:36:45,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849115977] [2024-11-07 19:36:45,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:36:45,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:36:45,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:36:45,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:36:45,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:36:45,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849115977] [2024-11-07 19:36:45,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849115977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:36:45,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:36:45,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 19:36:45,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826996154] [2024-11-07 19:36:45,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:36:45,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:36:45,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:36:45,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:36:45,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:36:45,853 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-07 19:36:45,854 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) [2024-11-07 19:36:45,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:36:45,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-07 19:36:45,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:36:46,305 INFO L124 PetriNetUnfolderBase]: 1641/2889 cut-off events. [2024-11-07 19:36:46,305 INFO L125 PetriNetUnfolderBase]: For 3634/3646 co-relation queries the response was YES. [2024-11-07 19:36:46,312 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. [2024-11-07 19:36:46,318 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 122 selfloop transitions, 44 changer transitions 3/176 dead transitions. [2024-11-07 19:36:46,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 176 transitions, 1184 flow [2024-11-07 19:36:46,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 19:36:46,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-07 19:36:46,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 311 transitions. [2024-11-07 19:36:46,321 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41801075268817206 [2024-11-07 19:36:46,321 INFO L175 Difference]: Start difference. First operand has 90 places, 96 transitions, 539 flow. Second operand 12 states and 311 transitions. [2024-11-07 19:36:46,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 176 transitions, 1184 flow [2024-11-07 19:36:46,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 176 transitions, 1165 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-11-07 19:36:46,329 INFO L231 Difference]: Finished difference. Result has 103 places, 105 transitions, 692 flow [2024-11-07 19:36:46,330 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} [2024-11-07 19:36:46,331 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 42 predicate places. [2024-11-07 19:36:46,331 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 105 transitions, 692 flow [2024-11-07 19:36:46,331 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) [2024-11-07 19:36:46,331 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:36:46,332 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] [2024-11-07 19:36:46,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-07 19:36:46,332 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:36:46,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:36:46,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1990466488, now seen corresponding path program 4 times [2024-11-07 19:36:46,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:36:46,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604445268] [2024-11-07 19:36:46,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:36:46,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:36:46,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:36:46,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:36:46,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:36:46,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604445268] [2024-11-07 19:36:46,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604445268] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:36:46,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:36:46,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 19:36:46,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927407262] [2024-11-07 19:36:46,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:36:46,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:36:46,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:36:46,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:36:46,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:36:46,925 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-07 19:36:46,926 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) [2024-11-07 19:36:46,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:36:46,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-07 19:36:46,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:36:47,431 INFO L124 PetriNetUnfolderBase]: 1745/3111 cut-off events. [2024-11-07 19:36:47,431 INFO L125 PetriNetUnfolderBase]: For 5800/5812 co-relation queries the response was YES. [2024-11-07 19:36:47,440 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. [2024-11-07 19:36:47,447 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 129 selfloop transitions, 40 changer transitions 3/179 dead transitions. [2024-11-07 19:36:47,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 179 transitions, 1343 flow [2024-11-07 19:36:47,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 19:36:47,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-07 19:36:47,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 307 transitions. [2024-11-07 19:36:47,449 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41263440860215056 [2024-11-07 19:36:47,449 INFO L175 Difference]: Start difference. First operand has 103 places, 105 transitions, 692 flow. Second operand 12 states and 307 transitions. [2024-11-07 19:36:47,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 179 transitions, 1343 flow [2024-11-07 19:36:47,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 179 transitions, 1267 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-11-07 19:36:47,461 INFO L231 Difference]: Finished difference. Result has 111 places, 111 transitions, 771 flow [2024-11-07 19:36:47,462 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} [2024-11-07 19:36:47,462 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 50 predicate places. [2024-11-07 19:36:47,462 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 111 transitions, 771 flow [2024-11-07 19:36:47,462 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) [2024-11-07 19:36:47,462 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:36:47,462 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] [2024-11-07 19:36:47,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-07 19:36:47,463 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:36:47,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:36:47,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1342423630, now seen corresponding path program 5 times [2024-11-07 19:36:47,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:36:47,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133205078] [2024-11-07 19:36:47,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:36:47,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:36:47,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:36:47,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:36:47,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:36:47,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133205078] [2024-11-07 19:36:47,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133205078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:36:47,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:36:47,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 19:36:47,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115886150] [2024-11-07 19:36:47,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:36:47,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:36:47,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:36:47,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:36:47,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:36:47,925 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-07 19:36:47,926 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) [2024-11-07 19:36:47,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:36:47,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-07 19:36:47,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:36:48,357 INFO L124 PetriNetUnfolderBase]: 1745/3109 cut-off events. [2024-11-07 19:36:48,357 INFO L125 PetriNetUnfolderBase]: For 7577/7601 co-relation queries the response was YES. [2024-11-07 19:36:48,366 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. [2024-11-07 19:36:48,373 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 125 selfloop transitions, 39 changer transitions 3/174 dead transitions. [2024-11-07 19:36:48,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 174 transitions, 1375 flow [2024-11-07 19:36:48,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 19:36:48,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-07 19:36:48,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 298 transitions. [2024-11-07 19:36:48,374 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40053763440860213 [2024-11-07 19:36:48,375 INFO L175 Difference]: Start difference. First operand has 111 places, 111 transitions, 771 flow. Second operand 12 states and 298 transitions. [2024-11-07 19:36:48,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 174 transitions, 1375 flow [2024-11-07 19:36:48,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 174 transitions, 1281 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-11-07 19:36:48,386 INFO L231 Difference]: Finished difference. Result has 117 places, 114 transitions, 800 flow [2024-11-07 19:36:48,386 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} [2024-11-07 19:36:48,387 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 56 predicate places. [2024-11-07 19:36:48,387 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 114 transitions, 800 flow [2024-11-07 19:36:48,387 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) [2024-11-07 19:36:48,387 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:36:48,387 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] [2024-11-07 19:36:48,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-07 19:36:48,387 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:36:48,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:36:48,387 INFO L85 PathProgramCache]: Analyzing trace with hash 213937972, now seen corresponding path program 6 times [2024-11-07 19:36:48,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:36:48,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877355731] [2024-11-07 19:36:48,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:36:48,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:36:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:36:48,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:36:48,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:36:48,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877355731] [2024-11-07 19:36:48,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877355731] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:36:48,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:36:48,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 19:36:48,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990852306] [2024-11-07 19:36:48,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:36:48,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:36:48,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:36:48,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:36:48,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:36:48,882 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-07 19:36:48,883 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) [2024-11-07 19:36:48,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:36:48,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-07 19:36:48,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:36:49,288 INFO L124 PetriNetUnfolderBase]: 1867/3349 cut-off events. [2024-11-07 19:36:49,288 INFO L125 PetriNetUnfolderBase]: For 8357/8381 co-relation queries the response was YES. [2024-11-07 19:36:49,297 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. [2024-11-07 19:36:49,304 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 132 selfloop transitions, 37 changer transitions 3/179 dead transitions. [2024-11-07 19:36:49,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 179 transitions, 1499 flow [2024-11-07 19:36:49,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 19:36:49,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 19:36:49,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 280 transitions. [2024-11-07 19:36:49,306 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-11-07 19:36:49,306 INFO L175 Difference]: Start difference. First operand has 117 places, 114 transitions, 800 flow. Second operand 11 states and 280 transitions. [2024-11-07 19:36:49,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 179 transitions, 1499 flow [2024-11-07 19:36:49,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 179 transitions, 1409 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-11-07 19:36:49,318 INFO L231 Difference]: Finished difference. Result has 123 places, 125 transitions, 945 flow [2024-11-07 19:36:49,319 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} [2024-11-07 19:36:49,319 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 62 predicate places. [2024-11-07 19:36:49,319 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 125 transitions, 945 flow [2024-11-07 19:36:49,319 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) [2024-11-07 19:36:49,319 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:36:49,319 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] [2024-11-07 19:36:49,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-07 19:36:49,319 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:36:49,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:36:49,320 INFO L85 PathProgramCache]: Analyzing trace with hash 709586714, now seen corresponding path program 7 times [2024-11-07 19:36:49,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:36:49,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661488295] [2024-11-07 19:36:49,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:36:49,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:36:49,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:36:49,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:36:49,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:36:49,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661488295] [2024-11-07 19:36:49,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661488295] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:36:49,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:36:49,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 19:36:49,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358139458] [2024-11-07 19:36:49,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:36:49,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:36:49,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:36:49,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:36:49,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:36:49,805 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-07 19:36:49,805 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) [2024-11-07 19:36:49,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:36:49,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-07 19:36:49,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:36:50,242 INFO L124 PetriNetUnfolderBase]: 2007/3588 cut-off events. [2024-11-07 19:36:50,242 INFO L125 PetriNetUnfolderBase]: For 13903/13939 co-relation queries the response was YES. [2024-11-07 19:36:50,252 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. [2024-11-07 19:36:50,258 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 141 selfloop transitions, 37 changer transitions 3/188 dead transitions. [2024-11-07 19:36:50,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 188 transitions, 1680 flow [2024-11-07 19:36:50,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 19:36:50,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 19:36:50,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 277 transitions. [2024-11-07 19:36:50,260 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40615835777126097 [2024-11-07 19:36:50,260 INFO L175 Difference]: Start difference. First operand has 123 places, 125 transitions, 945 flow. Second operand 11 states and 277 transitions. [2024-11-07 19:36:50,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 188 transitions, 1680 flow [2024-11-07 19:36:50,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 188 transitions, 1592 flow, removed 36 selfloop flow, removed 2 redundant places. [2024-11-07 19:36:50,278 INFO L231 Difference]: Finished difference. Result has 135 places, 134 transitions, 1092 flow [2024-11-07 19:36:50,279 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} [2024-11-07 19:36:50,279 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 74 predicate places. [2024-11-07 19:36:50,279 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 134 transitions, 1092 flow [2024-11-07 19:36:50,279 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) [2024-11-07 19:36:50,279 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:36:50,279 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] [2024-11-07 19:36:50,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-07 19:36:50,279 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:36:50,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:36:50,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1622378782, now seen corresponding path program 8 times [2024-11-07 19:36:50,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:36:50,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731764032] [2024-11-07 19:36:50,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:36:50,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:36:50,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:36:50,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:36:50,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:36:50,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731764032] [2024-11-07 19:36:50,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731764032] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:36:50,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:36:50,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 19:36:50,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428621787] [2024-11-07 19:36:50,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:36:50,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:36:50,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:36:50,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:36:50,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:36:50,669 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-07 19:36:50,669 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) [2024-11-07 19:36:50,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:36:50,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-07 19:36:50,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:36:51,147 INFO L124 PetriNetUnfolderBase]: 2139/3846 cut-off events. [2024-11-07 19:36:51,148 INFO L125 PetriNetUnfolderBase]: For 22314/22362 co-relation queries the response was YES. [2024-11-07 19:36:51,157 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. [2024-11-07 19:36:51,164 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 152 selfloop transitions, 37 changer transitions 3/199 dead transitions. [2024-11-07 19:36:51,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 199 transitions, 1881 flow [2024-11-07 19:36:51,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 19:36:51,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 19:36:51,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 279 transitions. [2024-11-07 19:36:51,165 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-11-07 19:36:51,165 INFO L175 Difference]: Start difference. First operand has 135 places, 134 transitions, 1092 flow. Second operand 11 states and 279 transitions. [2024-11-07 19:36:51,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 199 transitions, 1881 flow [2024-11-07 19:36:51,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 199 transitions, 1751 flow, removed 47 selfloop flow, removed 5 redundant places. [2024-11-07 19:36:51,186 INFO L231 Difference]: Finished difference. Result has 143 places, 143 transitions, 1178 flow [2024-11-07 19:36:51,187 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} [2024-11-07 19:36:51,187 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 82 predicate places. [2024-11-07 19:36:51,187 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 143 transitions, 1178 flow [2024-11-07 19:36:51,188 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) [2024-11-07 19:36:51,188 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:36:51,188 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] [2024-11-07 19:36:51,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-07 19:36:51,188 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:36:51,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:36:51,189 INFO L85 PathProgramCache]: Analyzing trace with hash -2106684206, now seen corresponding path program 9 times [2024-11-07 19:36:51,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:36:51,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194752205] [2024-11-07 19:36:51,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:36:51,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:36:51,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:36:51,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:36:51,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:36:51,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194752205] [2024-11-07 19:36:51,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194752205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:36:51,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:36:51,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 19:36:51,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281296401] [2024-11-07 19:36:51,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:36:51,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:36:51,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:36:51,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:36:51,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:36:51,594 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-07 19:36:51,594 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) [2024-11-07 19:36:51,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:36:51,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-07 19:36:51,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:36:52,097 INFO L124 PetriNetUnfolderBase]: 2305/4131 cut-off events. [2024-11-07 19:36:52,097 INFO L125 PetriNetUnfolderBase]: For 29056/29136 co-relation queries the response was YES. [2024-11-07 19:36:52,108 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. [2024-11-07 19:36:52,114 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 160 selfloop transitions, 38 changer transitions 3/208 dead transitions. [2024-11-07 19:36:52,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 208 transitions, 2018 flow [2024-11-07 19:36:52,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 19:36:52,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 19:36:52,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 282 transitions. [2024-11-07 19:36:52,115 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-11-07 19:36:52,115 INFO L175 Difference]: Start difference. First operand has 143 places, 143 transitions, 1178 flow. Second operand 11 states and 282 transitions. [2024-11-07 19:36:52,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 208 transitions, 2018 flow [2024-11-07 19:36:52,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 208 transitions, 1886 flow, removed 48 selfloop flow, removed 5 redundant places. [2024-11-07 19:36:52,139 INFO L231 Difference]: Finished difference. Result has 151 places, 150 transitions, 1280 flow [2024-11-07 19:36:52,139 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} [2024-11-07 19:36:52,140 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 90 predicate places. [2024-11-07 19:36:52,140 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 150 transitions, 1280 flow [2024-11-07 19:36:52,140 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) [2024-11-07 19:36:52,140 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:36:52,140 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] [2024-11-07 19:36:52,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-07 19:36:52,140 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:36:52,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:36:52,140 INFO L85 PathProgramCache]: Analyzing trace with hash -788811030, now seen corresponding path program 10 times [2024-11-07 19:36:52,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:36:52,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908484675] [2024-11-07 19:36:52,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:36:52,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:36:52,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:36:52,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:36:52,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:36:52,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908484675] [2024-11-07 19:36:52,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908484675] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:36:52,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:36:52,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 19:36:52,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430707424] [2024-11-07 19:36:52,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:36:52,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:36:52,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:36:52,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:36:52,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:36:52,472 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-07 19:36:52,472 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) [2024-11-07 19:36:52,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:36:52,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-07 19:36:52,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:36:52,949 INFO L124 PetriNetUnfolderBase]: 2366/4235 cut-off events. [2024-11-07 19:36:52,950 INFO L125 PetriNetUnfolderBase]: For 34293/34413 co-relation queries the response was YES. [2024-11-07 19:36:52,966 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. [2024-11-07 19:36:52,977 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 154 selfloop transitions, 37 changer transitions 4/202 dead transitions. [2024-11-07 19:36:52,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 202 transitions, 1968 flow [2024-11-07 19:36:52,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 19:36:52,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 19:36:52,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 269 transitions. [2024-11-07 19:36:52,978 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3944281524926686 [2024-11-07 19:36:52,978 INFO L175 Difference]: Start difference. First operand has 151 places, 150 transitions, 1280 flow. Second operand 11 states and 269 transitions. [2024-11-07 19:36:52,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 202 transitions, 1968 flow [2024-11-07 19:36:53,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 202 transitions, 1824 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-11-07 19:36:53,010 INFO L231 Difference]: Finished difference. Result has 158 places, 156 transitions, 1307 flow [2024-11-07 19:36:53,010 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} [2024-11-07 19:36:53,010 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 97 predicate places. [2024-11-07 19:36:53,010 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 156 transitions, 1307 flow [2024-11-07 19:36:53,011 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) [2024-11-07 19:36:53,011 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:36:53,011 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] [2024-11-07 19:36:53,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-07 19:36:53,011 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:36:53,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:36:53,011 INFO L85 PathProgramCache]: Analyzing trace with hash -324453426, now seen corresponding path program 11 times [2024-11-07 19:36:53,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:36:53,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249994843] [2024-11-07 19:36:53,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:36:53,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:36:53,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:36:53,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:36:53,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:36:53,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249994843] [2024-11-07 19:36:53,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249994843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:36:53,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:36:53,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 19:36:53,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838393227] [2024-11-07 19:36:53,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:36:53,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:36:53,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:36:53,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:36:53,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:36:53,513 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-07 19:36:53,514 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) [2024-11-07 19:36:53,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:36:53,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-07 19:36:53,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:36:54,048 INFO L124 PetriNetUnfolderBase]: 2517/4479 cut-off events. [2024-11-07 19:36:54,048 INFO L125 PetriNetUnfolderBase]: For 35209/35289 co-relation queries the response was YES. [2024-11-07 19:36:54,065 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. [2024-11-07 19:36:54,075 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 165 selfloop transitions, 43 changer transitions 3/218 dead transitions. [2024-11-07 19:36:54,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 218 transitions, 2177 flow [2024-11-07 19:36:54,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 19:36:54,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 19:36:54,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 280 transitions. [2024-11-07 19:36:54,076 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-11-07 19:36:54,076 INFO L175 Difference]: Start difference. First operand has 158 places, 156 transitions, 1307 flow. Second operand 11 states and 280 transitions. [2024-11-07 19:36:54,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 218 transitions, 2177 flow [2024-11-07 19:36:54,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 218 transitions, 2065 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-11-07 19:36:54,113 INFO L231 Difference]: Finished difference. Result has 165 places, 163 transitions, 1472 flow [2024-11-07 19:36:54,113 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} [2024-11-07 19:36:54,113 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 104 predicate places. [2024-11-07 19:36:54,113 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 163 transitions, 1472 flow [2024-11-07 19:36:54,113 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) [2024-11-07 19:36:54,113 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:36:54,114 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] [2024-11-07 19:36:54,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-07 19:36:54,114 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:36:54,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:36:54,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1217833348, now seen corresponding path program 12 times [2024-11-07 19:36:54,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:36:54,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468140690] [2024-11-07 19:36:54,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:36:54,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:36:54,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:36:54,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:36:54,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:36:54,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468140690] [2024-11-07 19:36:54,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468140690] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:36:54,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:36:54,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 19:36:54,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155593034] [2024-11-07 19:36:54,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:36:54,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:36:54,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:36:54,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:36:54,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:36:54,421 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-07 19:36:54,422 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) [2024-11-07 19:36:54,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:36:54,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-07 19:36:54,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:36:54,923 INFO L124 PetriNetUnfolderBase]: 2517/4483 cut-off events. [2024-11-07 19:36:54,923 INFO L125 PetriNetUnfolderBase]: For 41879/41941 co-relation queries the response was YES. [2024-11-07 19:36:54,941 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. [2024-11-07 19:36:54,951 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 170 selfloop transitions, 38 changer transitions 4/219 dead transitions. [2024-11-07 19:36:54,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 219 transitions, 2223 flow [2024-11-07 19:36:54,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 19:36:54,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 19:36:54,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 276 transitions. [2024-11-07 19:36:54,952 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4046920821114369 [2024-11-07 19:36:54,952 INFO L175 Difference]: Start difference. First operand has 165 places, 163 transitions, 1472 flow. Second operand 11 states and 276 transitions. [2024-11-07 19:36:54,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 219 transitions, 2223 flow [2024-11-07 19:36:55,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 219 transitions, 2053 flow, removed 64 selfloop flow, removed 6 redundant places. [2024-11-07 19:36:55,008 INFO L231 Difference]: Finished difference. Result has 171 places, 167 transitions, 1431 flow [2024-11-07 19:36:55,008 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} [2024-11-07 19:36:55,009 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 110 predicate places. [2024-11-07 19:36:55,009 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 167 transitions, 1431 flow [2024-11-07 19:36:55,009 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) [2024-11-07 19:36:55,009 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:36:55,009 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] [2024-11-07 19:36:55,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-07 19:36:55,009 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:36:55,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:36:55,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1014499284, now seen corresponding path program 13 times [2024-11-07 19:36:55,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:36:55,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796864528] [2024-11-07 19:36:55,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:36:55,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:36:55,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:36:55,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:36:55,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:36:55,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796864528] [2024-11-07 19:36:55,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796864528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:36:55,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:36:55,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 19:36:55,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949209643] [2024-11-07 19:36:55,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:36:55,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:36:55,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:36:55,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:36:55,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:36:55,317 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-07 19:36:55,317 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) [2024-11-07 19:36:55,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:36:55,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-07 19:36:55,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:36:55,786 INFO L124 PetriNetUnfolderBase]: 2517/4475 cut-off events. [2024-11-07 19:36:55,786 INFO L125 PetriNetUnfolderBase]: For 36790/36874 co-relation queries the response was YES. [2024-11-07 19:36:55,805 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. [2024-11-07 19:36:55,813 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 168 selfloop transitions, 42 changer transitions 4/221 dead transitions. [2024-11-07 19:36:55,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 221 transitions, 2150 flow [2024-11-07 19:36:55,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 19:36:55,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 19:36:55,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 275 transitions. [2024-11-07 19:36:55,814 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-11-07 19:36:55,814 INFO L175 Difference]: Start difference. First operand has 171 places, 167 transitions, 1431 flow. Second operand 11 states and 275 transitions. [2024-11-07 19:36:55,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 221 transitions, 2150 flow [2024-11-07 19:36:55,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 221 transitions, 2042 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-11-07 19:36:55,861 INFO L231 Difference]: Finished difference. Result has 175 places, 171 transitions, 1471 flow [2024-11-07 19:36:55,861 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} [2024-11-07 19:36:55,861 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 114 predicate places. [2024-11-07 19:36:55,861 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 171 transitions, 1471 flow [2024-11-07 19:36:55,862 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) [2024-11-07 19:36:55,862 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:36:55,862 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] [2024-11-07 19:36:55,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-07 19:36:55,862 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:36:55,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:36:55,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1582921742, now seen corresponding path program 14 times [2024-11-07 19:36:55,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:36:55,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993881890] [2024-11-07 19:36:55,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:36:55,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:36:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:36:56,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:36:56,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:36:56,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993881890] [2024-11-07 19:36:56,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993881890] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:36:56,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:36:56,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 19:36:56,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997176105] [2024-11-07 19:36:56,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:36:56,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:36:56,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:36:56,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:36:56,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:36:56,219 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-07 19:36:56,220 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) [2024-11-07 19:36:56,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:36:56,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-07 19:36:56,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:36:56,719 INFO L124 PetriNetUnfolderBase]: 2553/4541 cut-off events. [2024-11-07 19:36:56,719 INFO L125 PetriNetUnfolderBase]: For 37036/37120 co-relation queries the response was YES. [2024-11-07 19:36:56,737 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. [2024-11-07 19:36:56,745 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 172 selfloop transitions, 38 changer transitions 3/220 dead transitions. [2024-11-07 19:36:56,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 220 transitions, 2165 flow [2024-11-07 19:36:56,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 19:36:56,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 19:36:56,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 269 transitions. [2024-11-07 19:36:56,746 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3944281524926686 [2024-11-07 19:36:56,746 INFO L175 Difference]: Start difference. First operand has 175 places, 171 transitions, 1471 flow. Second operand 11 states and 269 transitions. [2024-11-07 19:36:56,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 220 transitions, 2165 flow [2024-11-07 19:36:56,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 220 transitions, 2039 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-11-07 19:36:56,794 INFO L231 Difference]: Finished difference. Result has 179 places, 174 transitions, 1473 flow [2024-11-07 19:36:56,794 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} [2024-11-07 19:36:56,795 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 118 predicate places. [2024-11-07 19:36:56,795 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 174 transitions, 1473 flow [2024-11-07 19:36:56,795 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) [2024-11-07 19:36:56,795 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:36:56,795 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] [2024-11-07 19:36:56,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-07 19:36:56,795 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:36:56,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:36:56,795 INFO L85 PathProgramCache]: Analyzing trace with hash 927000246, now seen corresponding path program 15 times [2024-11-07 19:36:56,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:36:56,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375197009] [2024-11-07 19:36:56,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:36:56,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:36:56,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:36:57,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:36:57,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:36:57,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375197009] [2024-11-07 19:36:57,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375197009] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:36:57,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:36:57,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 19:36:57,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460633293] [2024-11-07 19:36:57,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:36:57,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:36:57,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:36:57,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:36:57,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:36:57,127 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-07 19:36:57,128 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) [2024-11-07 19:36:57,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:36:57,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-07 19:36:57,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:36:57,640 INFO L124 PetriNetUnfolderBase]: 2553/4554 cut-off events. [2024-11-07 19:36:57,640 INFO L125 PetriNetUnfolderBase]: For 36400/36484 co-relation queries the response was YES. [2024-11-07 19:36:57,656 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. [2024-11-07 19:36:57,664 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 174 selfloop transitions, 36 changer transitions 3/220 dead transitions. [2024-11-07 19:36:57,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 220 transitions, 2139 flow [2024-11-07 19:36:57,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 19:36:57,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 19:36:57,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 266 transitions. [2024-11-07 19:36:57,665 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-11-07 19:36:57,665 INFO L175 Difference]: Start difference. First operand has 179 places, 174 transitions, 1473 flow. Second operand 11 states and 266 transitions. [2024-11-07 19:36:57,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 220 transitions, 2139 flow [2024-11-07 19:36:57,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 220 transitions, 2029 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-11-07 19:36:57,712 INFO L231 Difference]: Finished difference. Result has 183 places, 176 transitions, 1461 flow [2024-11-07 19:36:57,712 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} [2024-11-07 19:36:57,712 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 122 predicate places. [2024-11-07 19:36:57,712 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 176 transitions, 1461 flow [2024-11-07 19:36:57,712 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) [2024-11-07 19:36:57,712 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:36:57,712 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] [2024-11-07 19:36:57,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-07 19:36:57,713 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:36:57,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:36:57,713 INFO L85 PathProgramCache]: Analyzing trace with hash 611290964, now seen corresponding path program 16 times [2024-11-07 19:36:57,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:36:57,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640602128] [2024-11-07 19:36:57,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:36:57,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:36:57,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:36:58,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:36:58,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:36:58,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640602128] [2024-11-07 19:36:58,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640602128] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:36:58,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:36:58,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 19:36:58,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323441534] [2024-11-07 19:36:58,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:36:58,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:36:58,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:36:58,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:36:58,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:36:58,126 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-07 19:36:58,126 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) [2024-11-07 19:36:58,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:36:58,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-07 19:36:58,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:36:58,770 INFO L124 PetriNetUnfolderBase]: 2792/5008 cut-off events. [2024-11-07 19:36:58,770 INFO L125 PetriNetUnfolderBase]: For 47389/47449 co-relation queries the response was YES. [2024-11-07 19:36:58,789 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. [2024-11-07 19:36:58,797 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 201 selfloop transitions, 45 changer transitions 3/256 dead transitions. [2024-11-07 19:36:58,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 256 transitions, 2586 flow [2024-11-07 19:36:58,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 19:36:58,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-07 19:36:58,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 309 transitions. [2024-11-07 19:36:58,799 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4153225806451613 [2024-11-07 19:36:58,799 INFO L175 Difference]: Start difference. First operand has 183 places, 176 transitions, 1461 flow. Second operand 12 states and 309 transitions. [2024-11-07 19:36:58,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 256 transitions, 2586 flow [2024-11-07 19:36:58,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 256 transitions, 2516 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-11-07 19:36:58,847 INFO L231 Difference]: Finished difference. Result has 190 places, 188 transitions, 1734 flow [2024-11-07 19:36:58,847 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} [2024-11-07 19:36:58,847 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 129 predicate places. [2024-11-07 19:36:58,847 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 188 transitions, 1734 flow [2024-11-07 19:36:58,847 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) [2024-11-07 19:36:58,847 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:36:58,848 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] [2024-11-07 19:36:58,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-07 19:36:58,848 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:36:58,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:36:58,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1043050992, now seen corresponding path program 17 times [2024-11-07 19:36:58,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:36:58,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896918031] [2024-11-07 19:36:58,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:36:58,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:36:58,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:36:59,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:36:59,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:36:59,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896918031] [2024-11-07 19:36:59,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896918031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:36:59,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:36:59,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 19:36:59,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770296478] [2024-11-07 19:36:59,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:36:59,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:36:59,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:36:59,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:36:59,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:36:59,213 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-07 19:36:59,213 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) [2024-11-07 19:36:59,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:36:59,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-07 19:36:59,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:36:59,917 INFO L124 PetriNetUnfolderBase]: 2993/5377 cut-off events. [2024-11-07 19:36:59,917 INFO L125 PetriNetUnfolderBase]: For 64972/65120 co-relation queries the response was YES. [2024-11-07 19:36:59,943 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. [2024-11-07 19:36:59,957 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 199 selfloop transitions, 55 changer transitions 3/264 dead transitions. [2024-11-07 19:36:59,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 264 transitions, 2935 flow [2024-11-07 19:36:59,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 19:36:59,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-07 19:36:59,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 308 transitions. [2024-11-07 19:36:59,958 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41397849462365593 [2024-11-07 19:36:59,958 INFO L175 Difference]: Start difference. First operand has 190 places, 188 transitions, 1734 flow. Second operand 12 states and 308 transitions. [2024-11-07 19:36:59,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 264 transitions, 2935 flow [2024-11-07 19:37:00,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 264 transitions, 2705 flow, removed 97 selfloop flow, removed 5 redundant places. [2024-11-07 19:37:00,037 INFO L231 Difference]: Finished difference. Result has 200 places, 199 transitions, 1917 flow [2024-11-07 19:37:00,038 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} [2024-11-07 19:37:00,038 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 139 predicate places. [2024-11-07 19:37:00,038 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 199 transitions, 1917 flow [2024-11-07 19:37:00,038 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) [2024-11-07 19:37:00,038 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:37:00,038 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] [2024-11-07 19:37:00,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-07 19:37:00,038 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:37:00,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:37:00,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1248608742, now seen corresponding path program 18 times [2024-11-07 19:37:00,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:37:00,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829643184] [2024-11-07 19:37:00,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:37:00,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:37:00,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:37:00,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:37:00,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:37:00,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829643184] [2024-11-07 19:37:00,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829643184] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:37:00,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:37:00,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 19:37:00,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326078380] [2024-11-07 19:37:00,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:37:00,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:37:00,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:37:00,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:37:00,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:37:00,486 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-07 19:37:00,487 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) [2024-11-07 19:37:00,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:37:00,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-07 19:37:00,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:37:01,141 INFO L124 PetriNetUnfolderBase]: 3089/5543 cut-off events. [2024-11-07 19:37:01,142 INFO L125 PetriNetUnfolderBase]: For 77663/77781 co-relation queries the response was YES. [2024-11-07 19:37:01,171 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. [2024-11-07 19:37:01,242 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 208 selfloop transitions, 50 changer transitions 3/268 dead transitions. [2024-11-07 19:37:01,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 268 transitions, 3005 flow [2024-11-07 19:37:01,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 19:37:01,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-07 19:37:01,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 305 transitions. [2024-11-07 19:37:01,243 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4099462365591398 [2024-11-07 19:37:01,243 INFO L175 Difference]: Start difference. First operand has 200 places, 199 transitions, 1917 flow. Second operand 12 states and 305 transitions. [2024-11-07 19:37:01,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 268 transitions, 3005 flow [2024-11-07 19:37:01,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 268 transitions, 2788 flow, removed 83 selfloop flow, removed 7 redundant places. [2024-11-07 19:37:01,334 INFO L231 Difference]: Finished difference. Result has 207 places, 205 transitions, 1970 flow [2024-11-07 19:37:01,335 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} [2024-11-07 19:37:01,335 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 146 predicate places. [2024-11-07 19:37:01,335 INFO L471 AbstractCegarLoop]: Abstraction has has 207 places, 205 transitions, 1970 flow [2024-11-07 19:37:01,335 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) [2024-11-07 19:37:01,335 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:37:01,335 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] [2024-11-07 19:37:01,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-07 19:37:01,335 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:37:01,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:37:01,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1749769300, now seen corresponding path program 19 times [2024-11-07 19:37:01,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:37:01,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134638027] [2024-11-07 19:37:01,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:37:01,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:37:01,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:37:01,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:37:01,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:37:01,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134638027] [2024-11-07 19:37:01,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134638027] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:37:01,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:37:01,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 19:37:01,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120758489] [2024-11-07 19:37:01,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:37:01,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:37:01,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:37:01,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:37:01,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:37:01,637 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-07 19:37:01,637 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) [2024-11-07 19:37:01,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:37:01,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-07 19:37:01,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:37:02,298 INFO L124 PetriNetUnfolderBase]: 3089/5561 cut-off events. [2024-11-07 19:37:02,298 INFO L125 PetriNetUnfolderBase]: For 76277/76361 co-relation queries the response was YES. [2024-11-07 19:37:02,331 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. [2024-11-07 19:37:02,344 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 205 selfloop transitions, 52 changer transitions 4/268 dead transitions. [2024-11-07 19:37:02,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 268 transitions, 2932 flow [2024-11-07 19:37:02,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 19:37:02,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-07 19:37:02,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 302 transitions. [2024-11-07 19:37:02,346 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40591397849462363 [2024-11-07 19:37:02,346 INFO L175 Difference]: Start difference. First operand has 207 places, 205 transitions, 1970 flow. Second operand 12 states and 302 transitions. [2024-11-07 19:37:02,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 268 transitions, 2932 flow [2024-11-07 19:37:02,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 268 transitions, 2773 flow, removed 53 selfloop flow, removed 8 redundant places. [2024-11-07 19:37:02,468 INFO L231 Difference]: Finished difference. Result has 212 places, 209 transitions, 1993 flow [2024-11-07 19:37:02,468 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} [2024-11-07 19:37:02,468 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 151 predicate places. [2024-11-07 19:37:02,468 INFO L471 AbstractCegarLoop]: Abstraction has has 212 places, 209 transitions, 1993 flow [2024-11-07 19:37:02,469 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) [2024-11-07 19:37:02,469 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:37:02,469 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] [2024-11-07 19:37:02,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-07 19:37:02,469 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:37:02,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:37:02,469 INFO L85 PathProgramCache]: Analyzing trace with hash 471807742, now seen corresponding path program 20 times [2024-11-07 19:37:02,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:37:02,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930109128] [2024-11-07 19:37:02,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:37:02,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:37:02,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:37:02,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:37:02,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:37:02,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930109128] [2024-11-07 19:37:02,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930109128] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:37:02,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:37:02,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 19:37:02,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499383242] [2024-11-07 19:37:02,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:37:02,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:37:02,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:37:02,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:37:02,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:37:02,842 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-07 19:37:02,843 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) [2024-11-07 19:37:02,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:37:02,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-07 19:37:02,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:37:03,494 INFO L124 PetriNetUnfolderBase]: 3295/5907 cut-off events. [2024-11-07 19:37:03,494 INFO L125 PetriNetUnfolderBase]: For 89661/89932 co-relation queries the response was YES. [2024-11-07 19:37:03,527 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. [2024-11-07 19:37:03,540 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 229 selfloop transitions, 38 changer transitions 3/277 dead transitions. [2024-11-07 19:37:03,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 277 transitions, 3242 flow [2024-11-07 19:37:03,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 19:37:03,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 19:37:03,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 285 transitions. [2024-11-07 19:37:03,542 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4178885630498534 [2024-11-07 19:37:03,542 INFO L175 Difference]: Start difference. First operand has 212 places, 209 transitions, 1993 flow. Second operand 11 states and 285 transitions. [2024-11-07 19:37:03,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 277 transitions, 3242 flow [2024-11-07 19:37:03,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 277 transitions, 3082 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-11-07 19:37:03,655 INFO L231 Difference]: Finished difference. Result has 217 places, 219 transitions, 2200 flow [2024-11-07 19:37:03,655 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} [2024-11-07 19:37:03,655 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 156 predicate places. [2024-11-07 19:37:03,655 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 219 transitions, 2200 flow [2024-11-07 19:37:03,655 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) [2024-11-07 19:37:03,655 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:37:03,656 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] [2024-11-07 19:37:03,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-07 19:37:03,656 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:37:03,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:37:03,656 INFO L85 PathProgramCache]: Analyzing trace with hash -378296692, now seen corresponding path program 21 times [2024-11-07 19:37:03,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:37:03,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791683444] [2024-11-07 19:37:03,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:37:03,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:37:03,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:37:03,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:37:03,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:37:03,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791683444] [2024-11-07 19:37:03,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791683444] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:37:03,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:37:03,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 19:37:03,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169431101] [2024-11-07 19:37:03,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:37:03,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:37:03,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:37:03,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:37:03,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:37:03,959 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-07 19:37:03,960 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) [2024-11-07 19:37:03,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:37:03,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-07 19:37:03,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:37:04,662 INFO L124 PetriNetUnfolderBase]: 3356/6019 cut-off events. [2024-11-07 19:37:04,663 INFO L125 PetriNetUnfolderBase]: For 105636/106032 co-relation queries the response was YES. [2024-11-07 19:37:04,698 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. [2024-11-07 19:37:04,713 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 223 selfloop transitions, 37 changer transitions 4/271 dead transitions. [2024-11-07 19:37:04,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 271 transitions, 3166 flow [2024-11-07 19:37:04,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 19:37:04,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 19:37:04,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 272 transitions. [2024-11-07 19:37:04,714 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-11-07 19:37:04,714 INFO L175 Difference]: Start difference. First operand has 217 places, 219 transitions, 2200 flow. Second operand 11 states and 272 transitions. [2024-11-07 19:37:04,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 271 transitions, 3166 flow [2024-11-07 19:37:04,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 271 transitions, 2924 flow, removed 103 selfloop flow, removed 5 redundant places. [2024-11-07 19:37:04,819 INFO L231 Difference]: Finished difference. Result has 225 places, 225 transitions, 2185 flow [2024-11-07 19:37:04,819 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} [2024-11-07 19:37:04,819 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 164 predicate places. [2024-11-07 19:37:04,819 INFO L471 AbstractCegarLoop]: Abstraction has has 225 places, 225 transitions, 2185 flow [2024-11-07 19:37:04,819 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) [2024-11-07 19:37:04,819 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:37:04,819 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] [2024-11-07 19:37:04,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-07 19:37:04,820 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:37:04,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:37:04,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1685242390, now seen corresponding path program 22 times [2024-11-07 19:37:04,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:37:04,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836183875] [2024-11-07 19:37:04,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:37:04,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:37:04,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:37:05,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:37:05,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:37:05,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836183875] [2024-11-07 19:37:05,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836183875] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:37:05,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:37:05,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 19:37:05,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351932323] [2024-11-07 19:37:05,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:37:05,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:37:05,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:37:05,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:37:05,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:37:05,193 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-07 19:37:05,193 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) [2024-11-07 19:37:05,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:37:05,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-07 19:37:05,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:37:05,894 INFO L124 PetriNetUnfolderBase]: 3492/6263 cut-off events. [2024-11-07 19:37:05,894 INFO L125 PetriNetUnfolderBase]: For 91059/91279 co-relation queries the response was YES. [2024-11-07 19:37:05,933 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. [2024-11-07 19:37:05,948 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 234 selfloop transitions, 43 changer transitions 3/287 dead transitions. [2024-11-07 19:37:05,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 287 transitions, 3377 flow [2024-11-07 19:37:05,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 19:37:05,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 19:37:05,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 283 transitions. [2024-11-07 19:37:05,949 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4149560117302053 [2024-11-07 19:37:05,949 INFO L175 Difference]: Start difference. First operand has 225 places, 225 transitions, 2185 flow. Second operand 11 states and 283 transitions. [2024-11-07 19:37:05,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 287 transitions, 3377 flow [2024-11-07 19:37:06,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 287 transitions, 3231 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-11-07 19:37:06,064 INFO L231 Difference]: Finished difference. Result has 232 places, 232 transitions, 2384 flow [2024-11-07 19:37:06,064 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} [2024-11-07 19:37:06,064 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 171 predicate places. [2024-11-07 19:37:06,064 INFO L471 AbstractCegarLoop]: Abstraction has has 232 places, 232 transitions, 2384 flow [2024-11-07 19:37:06,065 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) [2024-11-07 19:37:06,065 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:37:06,065 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] [2024-11-07 19:37:06,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-07 19:37:06,065 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:37:06,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:37:06,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1632758878, now seen corresponding path program 23 times [2024-11-07 19:37:06,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:37:06,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333537414] [2024-11-07 19:37:06,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:37:06,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:37:06,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:37:06,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:37:06,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:37:06,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333537414] [2024-11-07 19:37:06,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333537414] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:37:06,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:37:06,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 19:37:06,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524555938] [2024-11-07 19:37:06,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:37:06,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:37:06,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:37:06,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:37:06,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:37:06,418 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-07 19:37:06,418 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) [2024-11-07 19:37:06,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:37:06,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-07 19:37:06,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:37:07,157 INFO L124 PetriNetUnfolderBase]: 3605/6479 cut-off events. [2024-11-07 19:37:07,157 INFO L125 PetriNetUnfolderBase]: For 115110/115341 co-relation queries the response was YES. [2024-11-07 19:37:07,197 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. [2024-11-07 19:37:07,212 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 250 selfloop transitions, 36 changer transitions 3/296 dead transitions. [2024-11-07 19:37:07,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 296 transitions, 3674 flow [2024-11-07 19:37:07,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 19:37:07,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 19:37:07,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 282 transitions. [2024-11-07 19:37:07,213 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-11-07 19:37:07,213 INFO L175 Difference]: Start difference. First operand has 232 places, 232 transitions, 2384 flow. Second operand 11 states and 282 transitions. [2024-11-07 19:37:07,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 296 transitions, 3674 flow [2024-11-07 19:37:07,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 296 transitions, 3436 flow, removed 98 selfloop flow, removed 6 redundant places. [2024-11-07 19:37:07,394 INFO L231 Difference]: Finished difference. Result has 240 places, 239 transitions, 2480 flow [2024-11-07 19:37:07,394 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} [2024-11-07 19:37:07,395 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 179 predicate places. [2024-11-07 19:37:07,395 INFO L471 AbstractCegarLoop]: Abstraction has has 240 places, 239 transitions, 2480 flow [2024-11-07 19:37:07,395 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) [2024-11-07 19:37:07,395 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:37:07,395 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] [2024-11-07 19:37:07,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-07 19:37:07,395 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:37:07,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:37:07,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1494730126, now seen corresponding path program 24 times [2024-11-07 19:37:07,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:37:07,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549242912] [2024-11-07 19:37:07,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:37:07,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:37:07,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:37:07,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:37:07,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:37:07,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549242912] [2024-11-07 19:37:07,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549242912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:37:07,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:37:07,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 19:37:07,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255180088] [2024-11-07 19:37:07,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:37:07,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:37:07,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:37:07,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:37:07,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:37:07,739 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-07 19:37:07,739 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) [2024-11-07 19:37:07,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:37:07,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-07 19:37:07,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:37:08,533 INFO L124 PetriNetUnfolderBase]: 3710/6698 cut-off events. [2024-11-07 19:37:08,533 INFO L125 PetriNetUnfolderBase]: For 130853/131092 co-relation queries the response was YES. [2024-11-07 19:37:08,577 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. [2024-11-07 19:37:08,592 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 256 selfloop transitions, 36 changer transitions 3/302 dead transitions. [2024-11-07 19:37:08,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 302 transitions, 3712 flow [2024-11-07 19:37:08,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 19:37:08,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 19:37:08,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 282 transitions. [2024-11-07 19:37:08,593 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-11-07 19:37:08,593 INFO L175 Difference]: Start difference. First operand has 240 places, 239 transitions, 2480 flow. Second operand 11 states and 282 transitions. [2024-11-07 19:37:08,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 302 transitions, 3712 flow [2024-11-07 19:37:08,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 302 transitions, 3488 flow, removed 94 selfloop flow, removed 5 redundant places. [2024-11-07 19:37:08,757 INFO L231 Difference]: Finished difference. Result has 248 places, 245 transitions, 2517 flow [2024-11-07 19:37:08,757 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} [2024-11-07 19:37:08,757 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 187 predicate places. [2024-11-07 19:37:08,757 INFO L471 AbstractCegarLoop]: Abstraction has has 248 places, 245 transitions, 2517 flow [2024-11-07 19:37:08,758 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) [2024-11-07 19:37:08,758 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:37:08,758 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] [2024-11-07 19:37:08,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-07 19:37:08,758 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:37:08,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:37:08,758 INFO L85 PathProgramCache]: Analyzing trace with hash 201426106, now seen corresponding path program 25 times [2024-11-07 19:37:08,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:37:08,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769629681] [2024-11-07 19:37:08,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:37:08,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:37:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:37:09,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:37:09,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:37:09,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769629681] [2024-11-07 19:37:09,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769629681] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:37:09,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:37:09,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 19:37:09,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122273366] [2024-11-07 19:37:09,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:37:09,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:37:09,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:37:09,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:37:09,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:37:09,062 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-07 19:37:09,063 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) [2024-11-07 19:37:09,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:37:09,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-07 19:37:09,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:37:10,071 INFO L124 PetriNetUnfolderBase]: 3710/6673 cut-off events. [2024-11-07 19:37:10,072 INFO L125 PetriNetUnfolderBase]: For 130480/130714 co-relation queries the response was YES. [2024-11-07 19:37:10,119 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. [2024-11-07 19:37:10,136 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 252 selfloop transitions, 35 changer transitions 3/297 dead transitions. [2024-11-07 19:37:10,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 297 transitions, 3556 flow [2024-11-07 19:37:10,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 19:37:10,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 19:37:10,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 273 transitions. [2024-11-07 19:37:10,137 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4002932551319648 [2024-11-07 19:37:10,137 INFO L175 Difference]: Start difference. First operand has 248 places, 245 transitions, 2517 flow. Second operand 11 states and 273 transitions. [2024-11-07 19:37:10,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 297 transitions, 3556 flow [2024-11-07 19:37:10,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 297 transitions, 3369 flow, removed 74 selfloop flow, removed 6 redundant places. [2024-11-07 19:37:10,320 INFO L231 Difference]: Finished difference. Result has 254 places, 248 transitions, 2465 flow [2024-11-07 19:37:10,320 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} [2024-11-07 19:37:10,321 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 193 predicate places. [2024-11-07 19:37:10,321 INFO L471 AbstractCegarLoop]: Abstraction has has 254 places, 248 transitions, 2465 flow [2024-11-07 19:37:10,321 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) [2024-11-07 19:37:10,321 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:37:10,321 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] [2024-11-07 19:37:10,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-07 19:37:10,321 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:37:10,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:37:10,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1618897196, now seen corresponding path program 26 times [2024-11-07 19:37:10,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:37:10,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722343368] [2024-11-07 19:37:10,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:37:10,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:37:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:37:10,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:37:10,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:37:10,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722343368] [2024-11-07 19:37:10,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722343368] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:37:10,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:37:10,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 19:37:10,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650359306] [2024-11-07 19:37:10,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:37:10,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:37:10,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:37:10,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:37:10,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:37:10,632 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-07 19:37:10,632 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) [2024-11-07 19:37:10,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:37:10,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-07 19:37:10,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:37:11,464 INFO L124 PetriNetUnfolderBase]: 3806/6883 cut-off events. [2024-11-07 19:37:11,465 INFO L125 PetriNetUnfolderBase]: For 134593/134807 co-relation queries the response was YES. [2024-11-07 19:37:11,510 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. [2024-11-07 19:37:11,525 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 263 selfloop transitions, 37 changer transitions 3/310 dead transitions. [2024-11-07 19:37:11,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 310 transitions, 3736 flow [2024-11-07 19:37:11,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 19:37:11,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 19:37:11,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 282 transitions. [2024-11-07 19:37:11,526 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-11-07 19:37:11,526 INFO L175 Difference]: Start difference. First operand has 254 places, 248 transitions, 2465 flow. Second operand 11 states and 282 transitions. [2024-11-07 19:37:11,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 310 transitions, 3736 flow [2024-11-07 19:37:11,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 310 transitions, 3606 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-11-07 19:37:11,693 INFO L231 Difference]: Finished difference. Result has 259 places, 254 transitions, 2612 flow [2024-11-07 19:37:11,693 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} [2024-11-07 19:37:11,693 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 198 predicate places. [2024-11-07 19:37:11,693 INFO L471 AbstractCegarLoop]: Abstraction has has 259 places, 254 transitions, 2612 flow [2024-11-07 19:37:11,694 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) [2024-11-07 19:37:11,694 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:37:11,694 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] [2024-11-07 19:37:11,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-07 19:37:11,694 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:37:11,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:37:11,694 INFO L85 PathProgramCache]: Analyzing trace with hash -689333314, now seen corresponding path program 27 times [2024-11-07 19:37:11,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:37:11,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441437842] [2024-11-07 19:37:11,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:37:11,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:37:11,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:37:11,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:37:11,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:37:11,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441437842] [2024-11-07 19:37:11,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441437842] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:37:11,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:37:11,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 19:37:11,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520490366] [2024-11-07 19:37:11,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:37:11,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:37:11,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:37:11,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:37:11,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:37:11,980 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-07 19:37:11,980 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) [2024-11-07 19:37:11,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:37:11,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-07 19:37:11,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:37:12,925 INFO L124 PetriNetUnfolderBase]: 3806/6891 cut-off events. [2024-11-07 19:37:12,925 INFO L125 PetriNetUnfolderBase]: For 144132/144346 co-relation queries the response was YES. [2024-11-07 19:37:12,970 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. [2024-11-07 19:37:12,985 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 261 selfloop transitions, 38 changer transitions 4/310 dead transitions. [2024-11-07 19:37:12,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 310 transitions, 3707 flow [2024-11-07 19:37:12,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 19:37:12,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 19:37:12,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 279 transitions. [2024-11-07 19:37:12,987 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-11-07 19:37:12,987 INFO L175 Difference]: Start difference. First operand has 259 places, 254 transitions, 2612 flow. Second operand 11 states and 279 transitions. [2024-11-07 19:37:12,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 310 transitions, 3707 flow [2024-11-07 19:37:13,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 310 transitions, 3505 flow, removed 81 selfloop flow, removed 6 redundant places. [2024-11-07 19:37:13,156 INFO L231 Difference]: Finished difference. Result has 265 places, 258 transitions, 2561 flow [2024-11-07 19:37:13,156 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} [2024-11-07 19:37:13,157 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 204 predicate places. [2024-11-07 19:37:13,157 INFO L471 AbstractCegarLoop]: Abstraction has has 265 places, 258 transitions, 2561 flow [2024-11-07 19:37:13,157 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) [2024-11-07 19:37:13,157 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:37:13,157 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] [2024-11-07 19:37:13,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-07 19:37:13,157 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:37:13,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:37:13,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1391138282, now seen corresponding path program 28 times [2024-11-07 19:37:13,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:37:13,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051951018] [2024-11-07 19:37:13,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:37:13,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:37:13,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:37:13,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:37:13,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:37:13,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051951018] [2024-11-07 19:37:13,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051951018] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:37:13,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:37:13,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 19:37:13,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128319094] [2024-11-07 19:37:13,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:37:13,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:37:13,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:37:13,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:37:13,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:37:13,429 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-07 19:37:13,430 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) [2024-11-07 19:37:13,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:37:13,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-07 19:37:13,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:37:14,311 INFO L124 PetriNetUnfolderBase]: 3806/6889 cut-off events. [2024-11-07 19:37:14,311 INFO L125 PetriNetUnfolderBase]: For 137484/137722 co-relation queries the response was YES. [2024-11-07 19:37:14,354 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. [2024-11-07 19:37:14,369 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 259 selfloop transitions, 42 changer transitions 4/312 dead transitions. [2024-11-07 19:37:14,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 312 transitions, 3604 flow [2024-11-07 19:37:14,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 19:37:14,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 19:37:14,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 278 transitions. [2024-11-07 19:37:14,370 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-11-07 19:37:14,370 INFO L175 Difference]: Start difference. First operand has 265 places, 258 transitions, 2561 flow. Second operand 11 states and 278 transitions. [2024-11-07 19:37:14,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 312 transitions, 3604 flow [2024-11-07 19:37:14,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 312 transitions, 3468 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-11-07 19:37:14,535 INFO L231 Difference]: Finished difference. Result has 269 places, 262 transitions, 2595 flow [2024-11-07 19:37:14,535 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} [2024-11-07 19:37:14,536 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 208 predicate places. [2024-11-07 19:37:14,536 INFO L471 AbstractCegarLoop]: Abstraction has has 269 places, 262 transitions, 2595 flow [2024-11-07 19:37:14,536 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) [2024-11-07 19:37:14,536 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:37:14,536 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] [2024-11-07 19:37:14,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-07 19:37:14,536 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:37:14,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:37:14,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1170107036, now seen corresponding path program 29 times [2024-11-07 19:37:14,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:37:14,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342838365] [2024-11-07 19:37:14,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:37:14,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:37:14,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:37:14,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:37:14,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:37:14,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342838365] [2024-11-07 19:37:14,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342838365] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:37:14,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:37:14,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 19:37:14,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865341573] [2024-11-07 19:37:14,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:37:14,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:37:14,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:37:14,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:37:14,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:37:14,852 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-07 19:37:14,853 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) [2024-11-07 19:37:14,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:37:14,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-07 19:37:14,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:37:15,747 INFO L124 PetriNetUnfolderBase]: 3842/6955 cut-off events. [2024-11-07 19:37:15,747 INFO L125 PetriNetUnfolderBase]: For 136610/136848 co-relation queries the response was YES. [2024-11-07 19:37:15,789 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. [2024-11-07 19:37:15,802 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 263 selfloop transitions, 38 changer transitions 3/311 dead transitions. [2024-11-07 19:37:15,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 311 transitions, 3613 flow [2024-11-07 19:37:15,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 19:37:15,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 19:37:15,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 272 transitions. [2024-11-07 19:37:15,803 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-11-07 19:37:15,803 INFO L175 Difference]: Start difference. First operand has 269 places, 262 transitions, 2595 flow. Second operand 11 states and 272 transitions. [2024-11-07 19:37:15,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 311 transitions, 3613 flow [2024-11-07 19:37:15,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 311 transitions, 3459 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-11-07 19:37:15,974 INFO L231 Difference]: Finished difference. Result has 273 places, 265 transitions, 2591 flow [2024-11-07 19:37:15,974 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} [2024-11-07 19:37:15,974 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 212 predicate places. [2024-11-07 19:37:15,974 INFO L471 AbstractCegarLoop]: Abstraction has has 273 places, 265 transitions, 2591 flow [2024-11-07 19:37:15,974 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) [2024-11-07 19:37:15,974 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:37:15,974 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] [2024-11-07 19:37:15,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-07 19:37:15,975 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:37:15,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:37:15,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1826028532, now seen corresponding path program 30 times [2024-11-07 19:37:15,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:37:15,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819245506] [2024-11-07 19:37:15,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:37:15,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:37:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:37:16,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:37:16,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:37:16,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819245506] [2024-11-07 19:37:16,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819245506] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:37:16,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:37:16,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 19:37:16,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970423854] [2024-11-07 19:37:16,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:37:16,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:37:16,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:37:16,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:37:16,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:37:16,241 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-07 19:37:16,242 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) [2024-11-07 19:37:16,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:37:16,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-07 19:37:16,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:37:17,213 INFO L124 PetriNetUnfolderBase]: 3842/6968 cut-off events. [2024-11-07 19:37:17,213 INFO L125 PetriNetUnfolderBase]: For 134281/134519 co-relation queries the response was YES. [2024-11-07 19:37:17,259 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. [2024-11-07 19:37:17,279 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 265 selfloop transitions, 36 changer transitions 3/311 dead transitions. [2024-11-07 19:37:17,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 311 transitions, 3559 flow [2024-11-07 19:37:17,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 19:37:17,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 19:37:17,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 269 transitions. [2024-11-07 19:37:17,280 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3944281524926686 [2024-11-07 19:37:17,281 INFO L175 Difference]: Start difference. First operand has 273 places, 265 transitions, 2591 flow. Second operand 11 states and 269 transitions. [2024-11-07 19:37:17,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 311 transitions, 3559 flow [2024-11-07 19:37:17,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 311 transitions, 3429 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-11-07 19:37:17,478 INFO L231 Difference]: Finished difference. Result has 277 places, 267 transitions, 2559 flow [2024-11-07 19:37:17,478 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} [2024-11-07 19:37:17,478 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 216 predicate places. [2024-11-07 19:37:17,478 INFO L471 AbstractCegarLoop]: Abstraction has has 277 places, 267 transitions, 2559 flow [2024-11-07 19:37:17,478 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) [2024-11-07 19:37:17,478 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:37:17,479 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] [2024-11-07 19:37:17,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-11-07 19:37:17,479 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:37:17,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:37:17,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1339613652, now seen corresponding path program 31 times [2024-11-07 19:37:17,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:37:17,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283788364] [2024-11-07 19:37:17,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:37:17,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:37:17,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:37:17,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:37:17,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:37:17,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283788364] [2024-11-07 19:37:17,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283788364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:37:17,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:37:17,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 19:37:17,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827509094] [2024-11-07 19:37:17,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:37:17,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:37:17,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:37:17,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:37:17,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:37:17,942 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-07 19:37:17,942 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) [2024-11-07 19:37:17,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:37:17,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-07 19:37:17,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:37:18,901 INFO L124 PetriNetUnfolderBase]: 3973/7203 cut-off events. [2024-11-07 19:37:18,901 INFO L125 PetriNetUnfolderBase]: For 150549/150818 co-relation queries the response was YES. [2024-11-07 19:37:18,959 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. [2024-11-07 19:37:18,976 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 281 selfloop transitions, 36 changer transitions 3/327 dead transitions. [2024-11-07 19:37:18,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 327 transitions, 4048 flow [2024-11-07 19:37:18,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 19:37:18,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 19:37:18,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 279 transitions. [2024-11-07 19:37:18,977 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-11-07 19:37:18,977 INFO L175 Difference]: Start difference. First operand has 277 places, 267 transitions, 2559 flow. Second operand 11 states and 279 transitions. [2024-11-07 19:37:18,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 327 transitions, 4048 flow [2024-11-07 19:37:19,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 327 transitions, 3978 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-11-07 19:37:19,197 INFO L231 Difference]: Finished difference. Result has 283 places, 276 transitions, 2970 flow [2024-11-07 19:37:19,197 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} [2024-11-07 19:37:19,197 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 222 predicate places. [2024-11-07 19:37:19,197 INFO L471 AbstractCegarLoop]: Abstraction has has 283 places, 276 transitions, 2970 flow [2024-11-07 19:37:19,197 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) [2024-11-07 19:37:19,197 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:37:19,197 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] [2024-11-07 19:37:19,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-11-07 19:37:19,197 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:37:19,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:37:19,198 INFO L85 PathProgramCache]: Analyzing trace with hash 2136447236, now seen corresponding path program 32 times [2024-11-07 19:37:19,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:37:19,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57010980] [2024-11-07 19:37:19,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:37:19,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:37:19,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:37:19,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:37:19,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:37:19,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57010980] [2024-11-07 19:37:19,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57010980] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:37:19,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:37:19,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 19:37:19,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890861454] [2024-11-07 19:37:19,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:37:19,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:37:19,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:37:19,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:37:19,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:37:19,521 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-07 19:37:19,522 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) [2024-11-07 19:37:19,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:37:19,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-07 19:37:19,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:37:20,486 INFO L124 PetriNetUnfolderBase]: 4135/7486 cut-off events. [2024-11-07 19:37:20,486 INFO L125 PetriNetUnfolderBase]: For 208124/208605 co-relation queries the response was YES. [2024-11-07 19:37:20,547 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. [2024-11-07 19:37:20,566 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 293 selfloop transitions, 37 changer transitions 3/340 dead transitions. [2024-11-07 19:37:20,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 340 transitions, 4493 flow [2024-11-07 19:37:20,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 19:37:20,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 19:37:20,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 284 transitions. [2024-11-07 19:37:20,567 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41642228739002934 [2024-11-07 19:37:20,567 INFO L175 Difference]: Start difference. First operand has 283 places, 276 transitions, 2970 flow. Second operand 11 states and 284 transitions. [2024-11-07 19:37:20,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 340 transitions, 4493 flow [2024-11-07 19:37:20,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 340 transitions, 4157 flow, removed 151 selfloop flow, removed 5 redundant places. [2024-11-07 19:37:20,821 INFO L231 Difference]: Finished difference. Result has 292 places, 285 transitions, 3079 flow [2024-11-07 19:37:20,822 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} [2024-11-07 19:37:20,822 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 231 predicate places. [2024-11-07 19:37:20,822 INFO L471 AbstractCegarLoop]: Abstraction has has 292 places, 285 transitions, 3079 flow [2024-11-07 19:37:20,822 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) [2024-11-07 19:37:20,822 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:37:20,822 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] [2024-11-07 19:37:20,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-11-07 19:37:20,822 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:37:20,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:37:20,823 INFO L85 PathProgramCache]: Analyzing trace with hash 575049204, now seen corresponding path program 33 times [2024-11-07 19:37:20,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:37:20,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583177825] [2024-11-07 19:37:20,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:37:20,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:37:20,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:37:21,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:37:21,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:37:21,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583177825] [2024-11-07 19:37:21,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583177825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:37:21,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:37:21,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 19:37:21,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911957237] [2024-11-07 19:37:21,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:37:21,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:37:21,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:37:21,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:37:21,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:37:21,104 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-07 19:37:21,105 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) [2024-11-07 19:37:21,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:37:21,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-07 19:37:21,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:37:22,123 INFO L124 PetriNetUnfolderBase]: 4196/7596 cut-off events. [2024-11-07 19:37:22,123 INFO L125 PetriNetUnfolderBase]: For 217937/218452 co-relation queries the response was YES. [2024-11-07 19:37:22,186 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. [2024-11-07 19:37:22,205 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 287 selfloop transitions, 36 changer transitions 4/334 dead transitions. [2024-11-07 19:37:22,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 334 transitions, 4221 flow [2024-11-07 19:37:22,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 19:37:22,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 19:37:22,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 271 transitions. [2024-11-07 19:37:22,206 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3973607038123167 [2024-11-07 19:37:22,206 INFO L175 Difference]: Start difference. First operand has 292 places, 285 transitions, 3079 flow. Second operand 11 states and 271 transitions. [2024-11-07 19:37:22,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 334 transitions, 4221 flow [2024-11-07 19:37:22,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 334 transitions, 3919 flow, removed 134 selfloop flow, removed 5 redundant places. [2024-11-07 19:37:22,523 INFO L231 Difference]: Finished difference. Result has 300 places, 291 transitions, 3034 flow [2024-11-07 19:37:22,523 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} [2024-11-07 19:37:22,523 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 239 predicate places. [2024-11-07 19:37:22,524 INFO L471 AbstractCegarLoop]: Abstraction has has 300 places, 291 transitions, 3034 flow [2024-11-07 19:37:22,524 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) [2024-11-07 19:37:22,524 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:37:22,524 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] [2024-11-07 19:37:22,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-11-07 19:37:22,524 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:37:22,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:37:22,524 INFO L85 PathProgramCache]: Analyzing trace with hash 314059034, now seen corresponding path program 34 times [2024-11-07 19:37:22,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:37:22,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869185847] [2024-11-07 19:37:22,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:37:22,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:37:22,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:37:22,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:37:22,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:37:22,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869185847] [2024-11-07 19:37:22,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869185847] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:37:22,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:37:22,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 19:37:22,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283077932] [2024-11-07 19:37:22,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:37:22,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:37:22,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:37:22,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:37:22,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:37:22,855 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-07 19:37:22,855 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) [2024-11-07 19:37:22,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:37:22,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-07 19:37:22,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:37:23,898 INFO L124 PetriNetUnfolderBase]: 4347/7840 cut-off events. [2024-11-07 19:37:23,899 INFO L125 PetriNetUnfolderBase]: For 219562/219853 co-relation queries the response was YES. [2024-11-07 19:37:23,957 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. [2024-11-07 19:37:23,973 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 298 selfloop transitions, 42 changer transitions 3/350 dead transitions. [2024-11-07 19:37:23,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 350 transitions, 4524 flow [2024-11-07 19:37:23,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 19:37:23,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 19:37:23,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 282 transitions. [2024-11-07 19:37:23,974 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-11-07 19:37:23,974 INFO L175 Difference]: Start difference. First operand has 300 places, 291 transitions, 3034 flow. Second operand 11 states and 282 transitions. [2024-11-07 19:37:23,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 350 transitions, 4524 flow [2024-11-07 19:37:24,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 350 transitions, 4306 flow, removed 89 selfloop flow, removed 6 redundant places. [2024-11-07 19:37:24,327 INFO L231 Difference]: Finished difference. Result has 307 places, 298 transitions, 3267 flow [2024-11-07 19:37:24,327 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} [2024-11-07 19:37:24,327 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 246 predicate places. [2024-11-07 19:37:24,328 INFO L471 AbstractCegarLoop]: Abstraction has has 307 places, 298 transitions, 3267 flow [2024-11-07 19:37:24,328 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) [2024-11-07 19:37:24,328 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:37:24,328 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] [2024-11-07 19:37:24,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-11-07 19:37:24,328 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:37:24,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:37:24,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1089193844, now seen corresponding path program 35 times [2024-11-07 19:37:24,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:37:24,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075180277] [2024-11-07 19:37:24,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:37:24,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:37:24,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:37:24,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:37:24,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:37:24,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075180277] [2024-11-07 19:37:24,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075180277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:37:24,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:37:24,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 19:37:24,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990849821] [2024-11-07 19:37:24,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:37:24,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:37:24,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:37:24,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:37:24,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:37:24,677 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-07 19:37:24,677 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) [2024-11-07 19:37:24,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:37:24,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-07 19:37:24,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:37:25,793 INFO L124 PetriNetUnfolderBase]: 4410/7967 cut-off events. [2024-11-07 19:37:25,793 INFO L125 PetriNetUnfolderBase]: For 252973/253274 co-relation queries the response was YES. [2024-11-07 19:37:25,848 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. [2024-11-07 19:37:25,864 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 312 selfloop transitions, 35 changer transitions 3/357 dead transitions. [2024-11-07 19:37:25,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 357 transitions, 4700 flow [2024-11-07 19:37:25,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 19:37:25,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 19:37:25,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 281 transitions. [2024-11-07 19:37:25,865 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4120234604105572 [2024-11-07 19:37:25,865 INFO L175 Difference]: Start difference. First operand has 307 places, 298 transitions, 3267 flow. Second operand 11 states and 281 transitions. [2024-11-07 19:37:25,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 357 transitions, 4700 flow [2024-11-07 19:37:26,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 357 transitions, 4370 flow, removed 145 selfloop flow, removed 6 redundant places. [2024-11-07 19:37:26,260 INFO L231 Difference]: Finished difference. Result has 314 places, 303 transitions, 3251 flow [2024-11-07 19:37:26,261 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} [2024-11-07 19:37:26,261 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 253 predicate places. [2024-11-07 19:37:26,261 INFO L471 AbstractCegarLoop]: Abstraction has has 314 places, 303 transitions, 3251 flow [2024-11-07 19:37:26,261 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) [2024-11-07 19:37:26,261 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:37:26,261 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] [2024-11-07 19:37:26,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-11-07 19:37:26,261 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:37:26,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:37:26,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1039826156, now seen corresponding path program 36 times [2024-11-07 19:37:26,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:37:26,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508645434] [2024-11-07 19:37:26,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:37:26,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:37:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:37:26,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:37:26,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:37:26,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508645434] [2024-11-07 19:37:26,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508645434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:37:26,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:37:26,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 19:37:26,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885767684] [2024-11-07 19:37:26,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:37:26,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:37:26,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:37:26,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:37:26,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:37:26,542 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-07 19:37:26,542 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) [2024-11-07 19:37:26,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:37:26,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-07 19:37:26,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:37:27,678 INFO L124 PetriNetUnfolderBase]: 4410/7956 cut-off events. [2024-11-07 19:37:27,678 INFO L125 PetriNetUnfolderBase]: For 241742/242035 co-relation queries the response was YES. [2024-11-07 19:37:27,732 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. [2024-11-07 19:37:27,750 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 308 selfloop transitions, 34 changer transitions 3/352 dead transitions. [2024-11-07 19:37:27,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 352 transitions, 4434 flow [2024-11-07 19:37:27,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 19:37:27,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 19:37:27,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 272 transitions. [2024-11-07 19:37:27,750 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-11-07 19:37:27,751 INFO L175 Difference]: Start difference. First operand has 314 places, 303 transitions, 3251 flow. Second operand 11 states and 272 transitions. [2024-11-07 19:37:27,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 352 transitions, 4434 flow [2024-11-07 19:37:28,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 352 transitions, 4187 flow, removed 105 selfloop flow, removed 6 redundant places. [2024-11-07 19:37:28,101 INFO L231 Difference]: Finished difference. Result has 320 places, 306 transitions, 3157 flow [2024-11-07 19:37:28,101 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} [2024-11-07 19:37:28,101 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 259 predicate places. [2024-11-07 19:37:28,101 INFO L471 AbstractCegarLoop]: Abstraction has has 320 places, 306 transitions, 3157 flow [2024-11-07 19:37:28,101 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) [2024-11-07 19:37:28,101 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:37:28,102 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] [2024-11-07 19:37:28,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-11-07 19:37:28,102 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:37:28,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:37:28,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1453051924, now seen corresponding path program 37 times [2024-11-07 19:37:28,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:37:28,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241682315] [2024-11-07 19:37:28,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:37:28,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:37:28,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:37:28,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:37:28,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:37:28,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241682315] [2024-11-07 19:37:28,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241682315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:37:28,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:37:28,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 19:37:28,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060709089] [2024-11-07 19:37:28,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:37:28,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:37:28,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:37:28,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:37:28,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:37:28,416 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-07 19:37:28,416 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) [2024-11-07 19:37:28,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:37:28,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-07 19:37:28,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:37:29,463 INFO L124 PetriNetUnfolderBase]: 4473/8082 cut-off events. [2024-11-07 19:37:29,463 INFO L125 PetriNetUnfolderBase]: For 243801/244074 co-relation queries the response was YES. [2024-11-07 19:37:29,541 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. [2024-11-07 19:37:29,563 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 318 selfloop transitions, 36 changer transitions 3/364 dead transitions. [2024-11-07 19:37:29,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 364 transitions, 4619 flow [2024-11-07 19:37:29,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 19:37:29,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 19:37:29,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 281 transitions. [2024-11-07 19:37:29,564 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4120234604105572 [2024-11-07 19:37:29,564 INFO L175 Difference]: Start difference. First operand has 320 places, 306 transitions, 3157 flow. Second operand 11 states and 281 transitions. [2024-11-07 19:37:29,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 364 transitions, 4619 flow [2024-11-07 19:37:30,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 364 transitions, 4493 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-11-07 19:37:30,176 INFO L231 Difference]: Finished difference. Result has 325 places, 311 transitions, 3355 flow [2024-11-07 19:37:30,176 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} [2024-11-07 19:37:30,176 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 264 predicate places. [2024-11-07 19:37:30,176 INFO L471 AbstractCegarLoop]: Abstraction has has 325 places, 311 transitions, 3355 flow [2024-11-07 19:37:30,176 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) [2024-11-07 19:37:30,176 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:37:30,176 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] [2024-11-07 19:37:30,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-11-07 19:37:30,176 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:37:30,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:37:30,177 INFO L85 PathProgramCache]: Analyzing trace with hash 477158746, now seen corresponding path program 38 times [2024-11-07 19:37:30,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:37:30,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516962899] [2024-11-07 19:37:30,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:37:30,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:37:30,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:37:30,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:37:30,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:37:30,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516962899] [2024-11-07 19:37:30,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516962899] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:37:30,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:37:30,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 19:37:30,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824589588] [2024-11-07 19:37:30,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:37:30,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:37:30,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:37:30,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:37:30,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:37:30,546 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-07 19:37:30,546 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) [2024-11-07 19:37:30,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:37:30,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-07 19:37:30,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:37:31,964 INFO L124 PetriNetUnfolderBase]: 4473/8090 cut-off events. [2024-11-07 19:37:31,964 INFO L125 PetriNetUnfolderBase]: For 256352/256625 co-relation queries the response was YES. [2024-11-07 19:37:32,043 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. [2024-11-07 19:37:32,064 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 316 selfloop transitions, 37 changer transitions 4/364 dead transitions. [2024-11-07 19:37:32,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 364 transitions, 4590 flow [2024-11-07 19:37:32,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 19:37:32,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 19:37:32,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 278 transitions. [2024-11-07 19:37:32,065 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-11-07 19:37:32,065 INFO L175 Difference]: Start difference. First operand has 325 places, 311 transitions, 3355 flow. Second operand 11 states and 278 transitions. [2024-11-07 19:37:32,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 364 transitions, 4590 flow [2024-11-07 19:37:32,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 364 transitions, 4328 flow, removed 112 selfloop flow, removed 6 redundant places. [2024-11-07 19:37:32,449 INFO L231 Difference]: Finished difference. Result has 331 places, 315 transitions, 3262 flow [2024-11-07 19:37:32,449 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} [2024-11-07 19:37:32,449 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 270 predicate places. [2024-11-07 19:37:32,449 INFO L471 AbstractCegarLoop]: Abstraction has has 331 places, 315 transitions, 3262 flow [2024-11-07 19:37:32,449 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) [2024-11-07 19:37:32,449 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:37:32,449 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] [2024-11-07 19:37:32,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-11-07 19:37:32,450 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:37:32,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:37:32,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1348185320, now seen corresponding path program 39 times [2024-11-07 19:37:32,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:37:32,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402628216] [2024-11-07 19:37:32,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:37:32,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:37:32,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:37:32,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:37:32,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:37:32,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402628216] [2024-11-07 19:37:32,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402628216] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:37:32,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:37:32,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 19:37:32,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189268611] [2024-11-07 19:37:32,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:37:32,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:37:32,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:37:32,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:37:32,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:37:32,756 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-07 19:37:32,756 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) [2024-11-07 19:37:32,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:37:32,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-07 19:37:32,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:37:33,931 INFO L124 PetriNetUnfolderBase]: 4509/8156 cut-off events. [2024-11-07 19:37:33,931 INFO L125 PetriNetUnfolderBase]: For 241122/241419 co-relation queries the response was YES. [2024-11-07 19:37:34,009 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. [2024-11-07 19:37:34,028 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 314 selfloop transitions, 37 changer transitions 3/361 dead transitions. [2024-11-07 19:37:34,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 361 transitions, 4392 flow [2024-11-07 19:37:34,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 19:37:34,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 19:37:34,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 271 transitions. [2024-11-07 19:37:34,029 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3973607038123167 [2024-11-07 19:37:34,029 INFO L175 Difference]: Start difference. First operand has 331 places, 315 transitions, 3262 flow. Second operand 11 states and 271 transitions. [2024-11-07 19:37:34,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 361 transitions, 4392 flow [2024-11-07 19:37:34,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 361 transitions, 4226 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-11-07 19:37:34,412 INFO L231 Difference]: Finished difference. Result has 335 places, 318 transitions, 3262 flow [2024-11-07 19:37:34,412 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} [2024-11-07 19:37:34,412 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 274 predicate places. [2024-11-07 19:37:34,412 INFO L471 AbstractCegarLoop]: Abstraction has has 335 places, 318 transitions, 3262 flow [2024-11-07 19:37:34,412 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) [2024-11-07 19:37:34,412 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:37:34,412 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] [2024-11-07 19:37:34,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-11-07 19:37:34,412 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:37:34,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:37:34,413 INFO L85 PathProgramCache]: Analyzing trace with hash -904527590, now seen corresponding path program 40 times [2024-11-07 19:37:34,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:37:34,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890940663] [2024-11-07 19:37:34,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:37:34,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:37:34,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:37:34,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:37:34,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:37:34,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890940663] [2024-11-07 19:37:34,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890940663] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:37:34,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:37:34,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 19:37:34,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421198226] [2024-11-07 19:37:34,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:37:34,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:37:34,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:37:34,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:37:34,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:37:34,780 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-07 19:37:34,781 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) [2024-11-07 19:37:34,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:37:34,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-07 19:37:34,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:37:36,076 INFO L124 PetriNetUnfolderBase]: 4509/8175 cut-off events. [2024-11-07 19:37:36,076 INFO L125 PetriNetUnfolderBase]: For 236725/237022 co-relation queries the response was YES. [2024-11-07 19:37:36,141 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. [2024-11-07 19:37:36,162 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 317 selfloop transitions, 41 changer transitions 4/369 dead transitions. [2024-11-07 19:37:36,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 369 transitions, 4435 flow [2024-11-07 19:37:36,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 19:37:36,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 19:37:36,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 277 transitions. [2024-11-07 19:37:36,163 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40615835777126097 [2024-11-07 19:37:36,163 INFO L175 Difference]: Start difference. First operand has 335 places, 318 transitions, 3262 flow. Second operand 11 states and 277 transitions. [2024-11-07 19:37:36,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 369 transitions, 4435 flow [2024-11-07 19:37:36,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 369 transitions, 4269 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-11-07 19:37:36,562 INFO L231 Difference]: Finished difference. Result has 339 places, 322 transitions, 3286 flow [2024-11-07 19:37:36,562 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} [2024-11-07 19:37:36,563 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 278 predicate places. [2024-11-07 19:37:36,563 INFO L471 AbstractCegarLoop]: Abstraction has has 339 places, 322 transitions, 3286 flow [2024-11-07 19:37:36,563 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) [2024-11-07 19:37:36,563 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:37:36,563 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] [2024-11-07 19:37:36,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-11-07 19:37:36,563 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:37:36,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:37:36,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1979315934, now seen corresponding path program 41 times [2024-11-07 19:37:36,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:37:36,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275205310] [2024-11-07 19:37:36,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:37:36,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:37:36,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:37:36,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:37:36,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:37:36,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275205310] [2024-11-07 19:37:36,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275205310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:37:36,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:37:36,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 19:37:36,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108325809] [2024-11-07 19:37:36,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:37:36,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:37:36,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:37:36,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:37:36,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:37:36,949 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-07 19:37:36,949 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) [2024-11-07 19:37:36,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:37:36,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-07 19:37:36,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:37:38,282 INFO L124 PetriNetUnfolderBase]: 4509/8167 cut-off events. [2024-11-07 19:37:38,282 INFO L125 PetriNetUnfolderBase]: For 235998/236295 co-relation queries the response was YES. [2024-11-07 19:37:38,360 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. [2024-11-07 19:37:38,378 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 320 selfloop transitions, 35 changer transitions 3/365 dead transitions. [2024-11-07 19:37:38,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 365 transitions, 4354 flow [2024-11-07 19:37:38,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 19:37:38,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 19:37:38,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 268 transitions. [2024-11-07 19:37:38,379 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-11-07 19:37:38,379 INFO L175 Difference]: Start difference. First operand has 339 places, 322 transitions, 3286 flow. Second operand 11 states and 268 transitions. [2024-11-07 19:37:38,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 365 transitions, 4354 flow [2024-11-07 19:37:38,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 365 transitions, 4168 flow, removed 54 selfloop flow, removed 8 redundant places. [2024-11-07 19:37:38,761 INFO L231 Difference]: Finished difference. Result has 343 places, 324 transitions, 3194 flow [2024-11-07 19:37:38,762 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} [2024-11-07 19:37:38,762 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 282 predicate places. [2024-11-07 19:37:38,762 INFO L471 AbstractCegarLoop]: Abstraction has has 343 places, 324 transitions, 3194 flow [2024-11-07 19:37:38,762 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) [2024-11-07 19:37:38,762 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:37:38,762 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] [2024-11-07 19:37:38,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-11-07 19:37:38,762 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:37:38,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:37:38,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1996893779, now seen corresponding path program 1 times [2024-11-07 19:37:38,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:37:38,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128175435] [2024-11-07 19:37:38,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:37:38,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:37:38,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:37:38,840 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:37:38,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:37:38,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128175435] [2024-11-07 19:37:38,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128175435] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:37:38,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359614522] [2024-11-07 19:37:38,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:37:38,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:37:38,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:37:38,843 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:37:38,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-07 19:37:38,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:37:38,917 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-07 19:37:38,918 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:37:38,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:37:38,991 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:37:39,053 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:37:39,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359614522] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:37:39,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:37:39,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2024-11-07 19:37:39,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537207190] [2024-11-07 19:37:39,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:37:39,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-07 19:37:39,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:37:39,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-07 19:37:39,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-11-07 19:37:39,075 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-07 19:37:39,075 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) [2024-11-07 19:37:39,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:37:39,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-07 19:37:39,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:37:41,460 INFO L124 PetriNetUnfolderBase]: 7587/14474 cut-off events. [2024-11-07 19:37:41,460 INFO L125 PetriNetUnfolderBase]: For 468133/468946 co-relation queries the response was YES. [2024-11-07 19:37:41,603 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. [2024-11-07 19:37:41,635 INFO L140 encePairwiseOnDemand]: 53/62 looper letters, 538 selfloop transitions, 14 changer transitions 18/616 dead transitions. [2024-11-07 19:37:41,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 616 transitions, 7460 flow [2024-11-07 19:37:41,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 19:37:41,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-07 19:37:41,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 214 transitions. [2024-11-07 19:37:41,636 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4314516129032258 [2024-11-07 19:37:41,636 INFO L175 Difference]: Start difference. First operand has 343 places, 324 transitions, 3194 flow. Second operand 8 states and 214 transitions. [2024-11-07 19:37:41,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 616 transitions, 7460 flow [2024-11-07 19:37:42,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 616 transitions, 7306 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-11-07 19:37:42,281 INFO L231 Difference]: Finished difference. Result has 347 places, 332 transitions, 3236 flow [2024-11-07 19:37:42,281 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} [2024-11-07 19:37:42,281 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 286 predicate places. [2024-11-07 19:37:42,281 INFO L471 AbstractCegarLoop]: Abstraction has has 347 places, 332 transitions, 3236 flow [2024-11-07 19:37:42,281 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) [2024-11-07 19:37:42,281 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:37:42,282 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] [2024-11-07 19:37:42,294 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-07 19:37:42,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2024-11-07 19:37:42,482 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:37:42,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:37:42,483 INFO L85 PathProgramCache]: Analyzing trace with hash -138728954, now seen corresponding path program 1 times [2024-11-07 19:37:42,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:37:42,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319424191] [2024-11-07 19:37:42,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:37:42,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:37:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:37:42,537 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:37:42,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:37:42,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319424191] [2024-11-07 19:37:42,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319424191] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:37:42,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392724136] [2024-11-07 19:37:42,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:37:42,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:37:42,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:37:42,539 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:37:42,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-07 19:37:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:37:42,611 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-07 19:37:42,612 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:37:42,639 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:37:42,639 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 19:37:42,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392724136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:37:42,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 19:37:42,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-07 19:37:42,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499203131] [2024-11-07 19:37:42,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:37:42,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:37:42,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:37:42,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:37:42,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-07 19:37:42,640 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-07 19:37:42,640 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) [2024-11-07 19:37:42,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:37:42,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-07 19:37:42,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:37:45,120 INFO L124 PetriNetUnfolderBase]: 8422/16203 cut-off events. [2024-11-07 19:37:45,120 INFO L125 PetriNetUnfolderBase]: For 662706/664474 co-relation queries the response was YES. [2024-11-07 19:37:45,257 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. [2024-11-07 19:37:45,293 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 431 selfloop transitions, 34 changer transitions 0/511 dead transitions. [2024-11-07 19:37:45,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 511 transitions, 6256 flow [2024-11-07 19:37:45,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:37:45,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:37:45,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2024-11-07 19:37:45,294 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5483870967741935 [2024-11-07 19:37:45,294 INFO L175 Difference]: Start difference. First operand has 347 places, 332 transitions, 3236 flow. Second operand 4 states and 136 transitions. [2024-11-07 19:37:45,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 511 transitions, 6256 flow [2024-11-07 19:37:46,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 511 transitions, 6236 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-11-07 19:37:46,024 INFO L231 Difference]: Finished difference. Result has 349 places, 343 transitions, 3595 flow [2024-11-07 19:37:46,024 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} [2024-11-07 19:37:46,024 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 288 predicate places. [2024-11-07 19:37:46,024 INFO L471 AbstractCegarLoop]: Abstraction has has 349 places, 343 transitions, 3595 flow [2024-11-07 19:37:46,025 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) [2024-11-07 19:37:46,025 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:37:46,025 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] [2024-11-07 19:37:46,037 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-07 19:37:46,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2024-11-07 19:37:46,225 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 19:37:46,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:37:46,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1787849398, now seen corresponding path program 2 times [2024-11-07 19:37:46,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:37:46,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656708280] [2024-11-07 19:37:46,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:37:46,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:37:46,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:37:46,414 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:37:46,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:37:46,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656708280] [2024-11-07 19:37:46,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656708280] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:37:46,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124581976] [2024-11-07 19:37:46,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 19:37:46,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:37:46,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:37:46,417 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:37:46,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-07 19:37:46,500 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 19:37:46,500 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:37:46,501 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-07 19:37:46,502 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:37:46,634 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 19:37:46,634 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 [2024-11-07 19:37:46,730 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:37:46,730 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:37:46,845 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-07 19:37:46,845 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 [2024-11-07 19:37:46,989 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:37:46,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124581976] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:37:46,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:37:46,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-07 19:37:46,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720361645] [2024-11-07 19:37:46,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:37:46,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-07 19:37:46,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:37:46,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-07 19:37:46,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2024-11-07 19:37:47,130 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-07 19:37:47,130 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) [2024-11-07 19:37:47,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:37:47,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-07 19:37:47,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:37:55,680 INFO L124 PetriNetUnfolderBase]: 24488/43139 cut-off events. [2024-11-07 19:37:55,680 INFO L125 PetriNetUnfolderBase]: For 2061527/2070012 co-relation queries the response was YES. [2024-11-07 19:37:56,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266040 conditions, 43139 events. 24488/43139 cut-off events. For 2061527/2070012 co-relation queries the response was YES. Maximal size of possible extension queue 2274. Compared 392803 event pairs, 5151 based on Foata normal form. 889/43620 useless extension candidates. Maximal degree in co-relation 264282. Up to 8604 conditions per place. [2024-11-07 19:37:56,765 INFO L140 encePairwiseOnDemand]: 52/62 looper letters, 892 selfloop transitions, 58 changer transitions 0/995 dead transitions. [2024-11-07 19:37:56,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 995 transitions, 14351 flow [2024-11-07 19:37:56,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-07 19:37:56,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-07 19:37:56,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 804 transitions. [2024-11-07 19:37:56,767 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4471635150166852 [2024-11-07 19:37:56,767 INFO L175 Difference]: Start difference. First operand has 349 places, 343 transitions, 3595 flow. Second operand 29 states and 804 transitions. [2024-11-07 19:37:56,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 995 transitions, 14351 flow