./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i --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/goblint-regression/28-race_reach_73-funloop_hard_racefree.i', '-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', 'c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5'] 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/goblint-regression/28-race_reach_73-funloop_hard_racefree.i -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 c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 19:26:03,460 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 19:26:03,567 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-07 19:26:03,575 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 19:26:03,576 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 19:26:03,605 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 19:26:03,607 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 19:26:03,608 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 19:26:03,609 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 19:26:03,609 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 19:26:03,609 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 19:26:03,609 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 19:26:03,610 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 19:26:03,610 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 19:26:03,610 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 19:26:03,611 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 19:26:03,611 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 19:26:03,611 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 19:26:03,611 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 19:26:03,611 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 19:26:03,611 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-07 19:26:03,611 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-07 19:26:03,611 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-07 19:26:03,612 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 19:26:03,612 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-07 19:26:03,612 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 19:26:03,612 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 19:26:03,612 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 19:26:03,612 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 19:26:03,613 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 19:26:03,613 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 19:26:03,613 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 19:26:03,613 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 19:26:03,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:26:03,613 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 19:26:03,614 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 19:26:03,614 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 19:26:03,614 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 19:26:03,614 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 19:26:03,615 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 19:26:03,615 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 19:26:03,615 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 19:26:03,615 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 -> c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 [2024-11-07 19:26:03,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 19:26:03,895 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 19:26:03,897 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 19:26:03,898 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 19:26:03,898 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 19:26:03,900 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2024-11-07 19:26:05,182 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 19:26:05,475 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 19:26:05,478 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2024-11-07 19:26:05,496 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/55292bc0e/dee387e669cc44e7b23d1dde06a6163c/FLAG5641dfe81 [2024-11-07 19:26:05,752 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/55292bc0e/dee387e669cc44e7b23d1dde06a6163c [2024-11-07 19:26:05,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 19:26:05,755 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 19:26:05,756 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 19:26:05,757 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 19:26:05,760 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 19:26:05,761 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:26:05" (1/1) ... [2024-11-07 19:26:05,761 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56615d21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:26:05, skipping insertion in model container [2024-11-07 19:26:05,762 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:26:05" (1/1) ... [2024-11-07 19:26:05,807 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 19:26:06,138 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:26:06,174 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 19:26:06,244 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:26:06,310 INFO L204 MainTranslator]: Completed translation [2024-11-07 19:26:06,311 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:26:06 WrapperNode [2024-11-07 19:26:06,312 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 19:26:06,313 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 19:26:06,313 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 19:26:06,313 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 19:26:06,319 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:26:06" (1/1) ... [2024-11-07 19:26:06,340 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:26:06" (1/1) ... [2024-11-07 19:26:06,382 INFO L138 Inliner]: procedures = 272, calls = 110, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 350 [2024-11-07 19:26:06,382 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 19:26:06,383 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 19:26:06,383 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 19:26:06,383 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 19:26:06,391 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:26:06" (1/1) ... [2024-11-07 19:26:06,392 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:26:06" (1/1) ... [2024-11-07 19:26:06,398 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:26:06" (1/1) ... [2024-11-07 19:26:06,427 INFO L175 MemorySlicer]: Split 84 memory accesses to 4 slices as follows [2, 5, 75, 2]. 89 percent of accesses are in the largest equivalence class. The 67 initializations are split as follows [2, 5, 60, 0]. The 7 writes are split as follows [0, 0, 6, 1]. [2024-11-07 19:26:06,428 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:26:06" (1/1) ... [2024-11-07 19:26:06,428 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:26:06" (1/1) ... [2024-11-07 19:26:06,473 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:26:06" (1/1) ... [2024-11-07 19:26:06,483 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:26:06" (1/1) ... [2024-11-07 19:26:06,488 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:26:06" (1/1) ... [2024-11-07 19:26:06,490 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:26:06" (1/1) ... [2024-11-07 19:26:06,496 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 19:26:06,497 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 19:26:06,497 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 19:26:06,497 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 19:26:06,502 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:26:06" (1/1) ... [2024-11-07 19:26:06,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:26:06,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:26:06,540 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 19:26:06,543 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 19:26:06,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-07 19:26:06,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-07 19:26:06,570 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-07 19:26:06,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 19:26:06,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 19:26:06,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-07 19:26:06,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-07 19:26:06,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 19:26:06,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 19:26:06,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-07 19:26:06,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-07 19:26:06,570 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-07 19:26:06,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 19:26:06,570 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-07 19:26:06,570 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-07 19:26:06,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 19:26:06,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 19:26:06,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-07 19:26:06,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-07 19:26:06,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 19:26:06,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 19:26:06,573 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 19:26:06,750 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 19:26:06,752 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 19:26:07,315 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 19:26:07,315 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 19:26:07,811 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 19:26:07,813 INFO L316 CfgBuilder]: Removed 35 assume(true) statements. [2024-11-07 19:26:07,813 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:26:07 BoogieIcfgContainer [2024-11-07 19:26:07,814 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 19:26:07,816 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 19:26:07,817 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 19:26:07,821 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 19:26:07,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:26:05" (1/3) ... [2024-11-07 19:26:07,822 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30b53e24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:26:07, skipping insertion in model container [2024-11-07 19:26:07,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:26:06" (2/3) ... [2024-11-07 19:26:07,823 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30b53e24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:26:07, skipping insertion in model container [2024-11-07 19:26:07,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:26:07" (3/3) ... [2024-11-07 19:26:07,824 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_73-funloop_hard_racefree.i [2024-11-07 19:26:07,840 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 19:26:07,841 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2024-11-07 19:26:07,842 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 19:26:07,911 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-07 19:26:07,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 199 transitions, 405 flow [2024-11-07 19:26:08,052 INFO L124 PetriNetUnfolderBase]: 70/329 cut-off events. [2024-11-07 19:26:08,055 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-07 19:26:08,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334 conditions, 329 events. 70/329 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1963 event pairs, 0 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 192. Up to 8 conditions per place. [2024-11-07 19:26:08,064 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 199 transitions, 405 flow [2024-11-07 19:26:08,075 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 199 transitions, 405 flow [2024-11-07 19:26:08,086 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:26:08,103 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;@53c0cfff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:26:08,103 INFO L334 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2024-11-07 19:26:08,111 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:26:08,112 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2024-11-07 19:26:08,112 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:26:08,112 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:26:08,113 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-07 19:26:08,113 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-07 19:26:08,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:26:08,118 INFO L85 PathProgramCache]: Analyzing trace with hash 28070051, now seen corresponding path program 1 times [2024-11-07 19:26:08,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:26:08,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985677617] [2024-11-07 19:26:08,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:26:08,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:26:08,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:26:08,439 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 19:26:08,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:26:08,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985677617] [2024-11-07 19:26:08,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985677617] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:26:08,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:26:08,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:26:08,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304715124] [2024-11-07 19:26:08,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:26:08,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:26:08,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:26:08,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:26:08,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:26:08,476 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 199 [2024-11-07 19:26:08,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 199 transitions, 405 flow. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 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 19:26:08,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:26:08,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 199 [2024-11-07 19:26:08,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:26:09,186 INFO L124 PetriNetUnfolderBase]: 1085/3642 cut-off events. [2024-11-07 19:26:09,187 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-07 19:26:09,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5704 conditions, 3642 events. 1085/3642 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 32638 event pairs, 924 based on Foata normal form. 734/3839 useless extension candidates. Maximal degree in co-relation 5534. Up to 2056 conditions per place. [2024-11-07 19:26:09,213 INFO L140 encePairwiseOnDemand]: 160/199 looper letters, 72 selfloop transitions, 2 changer transitions 0/161 dead transitions. [2024-11-07 19:26:09,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 161 transitions, 477 flow [2024-11-07 19:26:09,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:26:09,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:26:09,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 372 transitions. [2024-11-07 19:26:09,231 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6231155778894473 [2024-11-07 19:26:09,233 INFO L175 Difference]: Start difference. First operand has 159 places, 199 transitions, 405 flow. Second operand 3 states and 372 transitions. [2024-11-07 19:26:09,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 161 transitions, 477 flow [2024-11-07 19:26:09,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 161 transitions, 477 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 19:26:09,244 INFO L231 Difference]: Finished difference. Result has 159 places, 161 transitions, 339 flow [2024-11-07 19:26:09,246 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=339, PETRI_PLACES=159, PETRI_TRANSITIONS=161} [2024-11-07 19:26:09,250 INFO L277 CegarLoopForPetriNet]: 159 programPoint places, 0 predicate places. [2024-11-07 19:26:09,250 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 161 transitions, 339 flow [2024-11-07 19:26:09,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 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 19:26:09,251 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:26:09,251 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-07 19:26:09,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 19:26:09,252 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-07 19:26:09,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:26:09,253 INFO L85 PathProgramCache]: Analyzing trace with hash 870261621, now seen corresponding path program 1 times [2024-11-07 19:26:09,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:26:09,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443040634] [2024-11-07 19:26:09,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:26:09,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:26:09,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:26:09,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:26:09,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:26:09,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443040634] [2024-11-07 19:26:09,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443040634] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:26:09,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479063676] [2024-11-07 19:26:09,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:26:09,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:26:09,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:26:09,360 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 19:26:09,366 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 19:26:09,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:26:09,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-07 19:26:09,483 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:26:09,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:26:09,517 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:26:09,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:26:09,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479063676] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:26:09,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:26:09,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-07 19:26:09,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204799023] [2024-11-07 19:26:09,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:26:09,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 19:26:09,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:26:09,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 19:26:09,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-07 19:26:09,541 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 199 [2024-11-07 19:26:09,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 161 transitions, 339 flow. Second operand has 7 states, 7 states have (on average 88.28571428571429) internal successors, (618), 7 states have internal predecessors, (618), 0 states have call successors, (0), 0 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 19:26:09,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:26:09,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 199 [2024-11-07 19:26:09,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:26:10,043 INFO L124 PetriNetUnfolderBase]: 1085/3645 cut-off events. [2024-11-07 19:26:10,044 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-07 19:26:10,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5720 conditions, 3645 events. 1085/3645 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 32606 event pairs, 924 based on Foata normal form. 0/3108 useless extension candidates. Maximal degree in co-relation 5708. Up to 2056 conditions per place. [2024-11-07 19:26:10,080 INFO L140 encePairwiseOnDemand]: 196/199 looper letters, 72 selfloop transitions, 5 changer transitions 0/164 dead transitions. [2024-11-07 19:26:10,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 164 transitions, 505 flow [2024-11-07 19:26:10,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 19:26:10,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 19:26:10,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 602 transitions. [2024-11-07 19:26:10,084 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5041876046901173 [2024-11-07 19:26:10,084 INFO L175 Difference]: Start difference. First operand has 159 places, 161 transitions, 339 flow. Second operand 6 states and 602 transitions. [2024-11-07 19:26:10,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 164 transitions, 505 flow [2024-11-07 19:26:10,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 164 transitions, 501 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-07 19:26:10,092 INFO L231 Difference]: Finished difference. Result has 166 places, 164 transitions, 371 flow [2024-11-07 19:26:10,092 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=371, PETRI_PLACES=166, PETRI_TRANSITIONS=164} [2024-11-07 19:26:10,094 INFO L277 CegarLoopForPetriNet]: 159 programPoint places, 7 predicate places. [2024-11-07 19:26:10,094 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 164 transitions, 371 flow [2024-11-07 19:26:10,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 88.28571428571429) internal successors, (618), 7 states have internal predecessors, (618), 0 states have call successors, (0), 0 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 19:26:10,094 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:26:10,095 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2024-11-07 19:26:10,114 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 19:26:10,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:26:10,295 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-07 19:26:10,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:26:10,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1630762275, now seen corresponding path program 2 times [2024-11-07 19:26:10,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:26:10,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742489723] [2024-11-07 19:26:10,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:26:10,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:26:10,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:26:10,440 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-07 19:26:10,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:26:10,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742489723] [2024-11-07 19:26:10,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742489723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:26:10,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:26:10,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:26:10,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073939050] [2024-11-07 19:26:10,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:26:10,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:26:10,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:26:10,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:26:10,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:26:10,501 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 199 [2024-11-07 19:26:10,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 164 transitions, 371 flow. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 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 19:26:10,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:26:10,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 199 [2024-11-07 19:26:10,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:26:10,995 INFO L124 PetriNetUnfolderBase]: 1131/3712 cut-off events. [2024-11-07 19:26:10,996 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-07 19:26:11,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5891 conditions, 3712 events. 1131/3712 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 33037 event pairs, 924 based on Foata normal form. 0/3215 useless extension candidates. Maximal degree in co-relation 5857. Up to 2052 conditions per place. [2024-11-07 19:26:11,018 INFO L140 encePairwiseOnDemand]: 195/199 looper letters, 99 selfloop transitions, 2 changer transitions 0/184 dead transitions. [2024-11-07 19:26:11,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 184 transitions, 613 flow [2024-11-07 19:26:11,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:26:11,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:26:11,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 348 transitions. [2024-11-07 19:26:11,021 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5829145728643216 [2024-11-07 19:26:11,021 INFO L175 Difference]: Start difference. First operand has 166 places, 164 transitions, 371 flow. Second operand 3 states and 348 transitions. [2024-11-07 19:26:11,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 184 transitions, 613 flow [2024-11-07 19:26:11,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 184 transitions, 599 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-07 19:26:11,030 INFO L231 Difference]: Finished difference. Result has 165 places, 162 transitions, 357 flow [2024-11-07 19:26:11,030 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=357, PETRI_PLACES=165, PETRI_TRANSITIONS=162} [2024-11-07 19:26:11,031 INFO L277 CegarLoopForPetriNet]: 159 programPoint places, 6 predicate places. [2024-11-07 19:26:11,031 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 162 transitions, 357 flow [2024-11-07 19:26:11,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 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 19:26:11,031 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:26:11,032 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2024-11-07 19:26:11,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 19:26:11,032 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-07 19:26:11,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:26:11,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1630762276, now seen corresponding path program 1 times [2024-11-07 19:26:11,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:26:11,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965771666] [2024-11-07 19:26:11,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:26:11,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:26:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:26:11,190 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:26:11,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:26:11,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965771666] [2024-11-07 19:26:11,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965771666] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:26:11,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176077788] [2024-11-07 19:26:11,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:26:11,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:26:11,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:26:11,195 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 19:26:11,197 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 19:26:11,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:26:11,310 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 19:26:11,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:26:11,339 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:26:11,339 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:26:11,401 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:26:11,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176077788] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:26:11,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:26:11,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-07 19:26:11,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410271519] [2024-11-07 19:26:11,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:26:11,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-07 19:26:11,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:26:11,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-07 19:26:11,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-07 19:26:11,406 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 199 [2024-11-07 19:26:11,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 162 transitions, 357 flow. Second operand has 13 states, 13 states have (on average 88.15384615384616) internal successors, (1146), 13 states have internal predecessors, (1146), 0 states have call successors, (0), 0 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 19:26:11,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:26:11,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 199 [2024-11-07 19:26:11,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:26:11,885 INFO L124 PetriNetUnfolderBase]: 1085/3627 cut-off events. [2024-11-07 19:26:11,885 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2024-11-07 19:26:11,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5751 conditions, 3627 events. 1085/3627 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 32277 event pairs, 924 based on Foata normal form. 6/3121 useless extension candidates. Maximal degree in co-relation 5699. Up to 2056 conditions per place. [2024-11-07 19:26:11,903 INFO L140 encePairwiseOnDemand]: 196/199 looper letters, 72 selfloop transitions, 11 changer transitions 0/168 dead transitions. [2024-11-07 19:26:11,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 168 transitions, 559 flow [2024-11-07 19:26:11,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 19:26:11,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-07 19:26:11,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1133 transitions. [2024-11-07 19:26:11,909 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47445561139028475 [2024-11-07 19:26:11,909 INFO L175 Difference]: Start difference. First operand has 165 places, 162 transitions, 357 flow. Second operand 12 states and 1133 transitions. [2024-11-07 19:26:11,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 168 transitions, 559 flow [2024-11-07 19:26:11,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 168 transitions, 555 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 19:26:11,916 INFO L231 Difference]: Finished difference. Result has 180 places, 168 transitions, 437 flow [2024-11-07 19:26:11,917 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=437, PETRI_PLACES=180, PETRI_TRANSITIONS=168} [2024-11-07 19:26:11,918 INFO L277 CegarLoopForPetriNet]: 159 programPoint places, 21 predicate places. [2024-11-07 19:26:11,919 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 168 transitions, 437 flow [2024-11-07 19:26:11,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 88.15384615384616) internal successors, (1146), 13 states have internal predecessors, (1146), 0 states have call successors, (0), 0 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 19:26:11,920 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:26:11,920 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1] [2024-11-07 19:26:11,937 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 19:26:12,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:26:12,121 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-07 19:26:12,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:26:12,122 INFO L85 PathProgramCache]: Analyzing trace with hash 336622564, now seen corresponding path program 2 times [2024-11-07 19:26:12,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:26:12,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103979233] [2024-11-07 19:26:12,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:26:12,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:26:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:26:12,310 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-07 19:26:12,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:26:12,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103979233] [2024-11-07 19:26:12,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103979233] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:26:12,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:26:12,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:26:12,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787154944] [2024-11-07 19:26:12,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:26:12,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:26:12,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:26:12,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:26:12,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:26:12,355 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 199 [2024-11-07 19:26:12,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 168 transitions, 437 flow. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 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 19:26:12,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:26:12,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 199 [2024-11-07 19:26:12,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:26:12,848 INFO L124 PetriNetUnfolderBase]: 1059/3350 cut-off events. [2024-11-07 19:26:12,848 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-11-07 19:26:12,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5458 conditions, 3350 events. 1059/3350 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 29635 event pairs, 0 based on Foata normal form. 1/2916 useless extension candidates. Maximal degree in co-relation 5382. Up to 2019 conditions per place. [2024-11-07 19:26:12,879 INFO L140 encePairwiseOnDemand]: 195/199 looper letters, 105 selfloop transitions, 2 changer transitions 0/191 dead transitions. [2024-11-07 19:26:12,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 191 transitions, 697 flow [2024-11-07 19:26:12,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:26:12,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:26:12,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2024-11-07 19:26:12,882 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5979899497487438 [2024-11-07 19:26:12,882 INFO L175 Difference]: Start difference. First operand has 180 places, 168 transitions, 437 flow. Second operand 3 states and 357 transitions. [2024-11-07 19:26:12,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 191 transitions, 697 flow [2024-11-07 19:26:12,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 191 transitions, 649 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-11-07 19:26:12,891 INFO L231 Difference]: Finished difference. Result has 178 places, 168 transitions, 399 flow [2024-11-07 19:26:12,892 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=399, PETRI_PLACES=178, PETRI_TRANSITIONS=168} [2024-11-07 19:26:12,893 INFO L277 CegarLoopForPetriNet]: 159 programPoint places, 19 predicate places. [2024-11-07 19:26:12,894 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 168 transitions, 399 flow [2024-11-07 19:26:12,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 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 19:26:12,894 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:26:12,894 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1] [2024-11-07 19:26:12,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 19:26:12,895 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-07 19:26:12,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:26:12,895 INFO L85 PathProgramCache]: Analyzing trace with hash -284018499, now seen corresponding path program 1 times [2024-11-07 19:26:12,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:26:12,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915003856] [2024-11-07 19:26:12,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:26:12,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:26:12,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:26:13,096 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-07 19:26:13,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:26:13,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915003856] [2024-11-07 19:26:13,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915003856] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:26:13,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732511735] [2024-11-07 19:26:13,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:26:13,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:26:13,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:26:13,099 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 19:26:13,110 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 19:26:13,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:26:13,227 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-07 19:26:13,228 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:26:13,264 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 19:26:13,321 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-07 19:26:13,321 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:26:13,374 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-07 19:26:13,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732511735] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:26:13,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:26:13,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-07 19:26:13,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387490060] [2024-11-07 19:26:13,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:26:13,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 19:26:13,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:26:13,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 19:26:13,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-07 19:26:13,558 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 199 [2024-11-07 19:26:13,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 168 transitions, 399 flow. Second operand has 7 states, 7 states have (on average 87.71428571428571) internal successors, (614), 7 states have internal predecessors, (614), 0 states have call successors, (0), 0 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 19:26:13,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:26:13,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 199 [2024-11-07 19:26:13,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:26:13,678 INFO L124 PetriNetUnfolderBase]: 72/276 cut-off events. [2024-11-07 19:26:13,678 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-11-07 19:26:13,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 532 conditions, 276 events. 72/276 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1126 event pairs, 34 based on Foata normal form. 44/292 useless extension candidates. Maximal degree in co-relation 479. Up to 132 conditions per place. [2024-11-07 19:26:13,681 INFO L140 encePairwiseOnDemand]: 195/199 looper letters, 61 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2024-11-07 19:26:13,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 90 transitions, 362 flow [2024-11-07 19:26:13,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:26:13,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:26:13,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 395 transitions. [2024-11-07 19:26:13,683 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4962311557788945 [2024-11-07 19:26:13,683 INFO L175 Difference]: Start difference. First operand has 178 places, 168 transitions, 399 flow. Second operand 4 states and 395 transitions. [2024-11-07 19:26:13,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 90 transitions, 362 flow [2024-11-07 19:26:13,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 90 transitions, 356 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-07 19:26:13,686 INFO L231 Difference]: Finished difference. Result has 80 places, 66 transitions, 186 flow [2024-11-07 19:26:13,686 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=80, PETRI_TRANSITIONS=66} [2024-11-07 19:26:13,687 INFO L277 CegarLoopForPetriNet]: 159 programPoint places, -79 predicate places. [2024-11-07 19:26:13,687 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 66 transitions, 186 flow [2024-11-07 19:26:13,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 87.71428571428571) internal successors, (614), 7 states have internal predecessors, (614), 0 states have call successors, (0), 0 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 19:26:13,688 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:26:13,689 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1] [2024-11-07 19:26:13,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-07 19:26:13,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:26:13,890 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-07 19:26:13,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:26:13,890 INFO L85 PathProgramCache]: Analyzing trace with hash -214637841, now seen corresponding path program 1 times [2024-11-07 19:26:13,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:26:13,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399707946] [2024-11-07 19:26:13,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:26:13,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:26:13,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:26:13,944 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 19:26:13,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:26:13,999 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 19:26:14,002 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 19:26:14,003 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (49 of 50 remaining) [2024-11-07 19:26:14,005 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 50 remaining) [2024-11-07 19:26:14,005 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 50 remaining) [2024-11-07 19:26:14,005 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 50 remaining) [2024-11-07 19:26:14,005 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 50 remaining) [2024-11-07 19:26:14,005 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 50 remaining) [2024-11-07 19:26:14,005 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 50 remaining) [2024-11-07 19:26:14,006 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK (42 of 50 remaining) [2024-11-07 19:26:14,006 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 50 remaining) [2024-11-07 19:26:14,006 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 50 remaining) [2024-11-07 19:26:14,006 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 50 remaining) [2024-11-07 19:26:14,006 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 50 remaining) [2024-11-07 19:26:14,006 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 50 remaining) [2024-11-07 19:26:14,006 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 50 remaining) [2024-11-07 19:26:14,006 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 50 remaining) [2024-11-07 19:26:14,006 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 50 remaining) [2024-11-07 19:26:14,006 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 50 remaining) [2024-11-07 19:26:14,006 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 50 remaining) [2024-11-07 19:26:14,007 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 50 remaining) [2024-11-07 19:26:14,007 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 50 remaining) [2024-11-07 19:26:14,007 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 50 remaining) [2024-11-07 19:26:14,007 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 50 remaining) [2024-11-07 19:26:14,007 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 50 remaining) [2024-11-07 19:26:14,007 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 50 remaining) [2024-11-07 19:26:14,007 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (25 of 50 remaining) [2024-11-07 19:26:14,007 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 50 remaining) [2024-11-07 19:26:14,007 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 50 remaining) [2024-11-07 19:26:14,007 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK (22 of 50 remaining) [2024-11-07 19:26:14,007 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 50 remaining) [2024-11-07 19:26:14,007 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 50 remaining) [2024-11-07 19:26:14,007 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 50 remaining) [2024-11-07 19:26:14,007 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 50 remaining) [2024-11-07 19:26:14,008 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 50 remaining) [2024-11-07 19:26:14,008 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 50 remaining) [2024-11-07 19:26:14,008 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 50 remaining) [2024-11-07 19:26:14,008 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 50 remaining) [2024-11-07 19:26:14,008 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 50 remaining) [2024-11-07 19:26:14,008 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 50 remaining) [2024-11-07 19:26:14,008 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10ASSERT_VIOLATIONMEMORY_LEAK (11 of 50 remaining) [2024-11-07 19:26:14,008 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 50 remaining) [2024-11-07 19:26:14,008 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 50 remaining) [2024-11-07 19:26:14,008 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 50 remaining) [2024-11-07 19:26:14,008 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 50 remaining) [2024-11-07 19:26:14,008 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 50 remaining) [2024-11-07 19:26:14,008 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 50 remaining) [2024-11-07 19:26:14,008 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 50 remaining) [2024-11-07 19:26:14,008 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 50 remaining) [2024-11-07 19:26:14,008 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 50 remaining) [2024-11-07 19:26:14,008 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 50 remaining) [2024-11-07 19:26:14,008 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10ASSERT_VIOLATIONMEMORY_LEAK (0 of 50 remaining) [2024-11-07 19:26:14,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-07 19:26:14,009 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2024-11-07 19:26:14,013 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 19:26:14,014 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-07 19:26:14,063 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-07 19:26:14,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 262 transitions, 540 flow [2024-11-07 19:26:14,107 INFO L124 PetriNetUnfolderBase]: 113/534 cut-off events. [2024-11-07 19:26:14,107 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-07 19:26:14,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 546 conditions, 534 events. 113/534 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3477 event pairs, 0 based on Foata normal form. 0/311 useless extension candidates. Maximal degree in co-relation 331. Up to 12 conditions per place. [2024-11-07 19:26:14,114 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 262 transitions, 540 flow [2024-11-07 19:26:14,119 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 262 transitions, 540 flow [2024-11-07 19:26:14,120 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:26:14,121 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;@53c0cfff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:26:14,121 INFO L334 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2024-11-07 19:26:14,123 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:26:14,123 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2024-11-07 19:26:14,123 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:26:14,123 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:26:14,123 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-07 19:26:14,124 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-07 19:26:14,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:26:14,124 INFO L85 PathProgramCache]: Analyzing trace with hash 36135459, now seen corresponding path program 1 times [2024-11-07 19:26:14,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:26:14,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069066495] [2024-11-07 19:26:14,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:26:14,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:26:14,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:26:14,159 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 19:26:14,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:26:14,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069066495] [2024-11-07 19:26:14,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069066495] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:26:14,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:26:14,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:26:14,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527101156] [2024-11-07 19:26:14,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:26:14,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:26:14,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:26:14,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:26:14,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:26:14,161 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 262 [2024-11-07 19:26:14,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 262 transitions, 540 flow. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 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 19:26:14,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:26:14,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 262 [2024-11-07 19:26:14,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:26:20,770 INFO L124 PetriNetUnfolderBase]: 47750/105628 cut-off events. [2024-11-07 19:26:20,770 INFO L125 PetriNetUnfolderBase]: For 206/206 co-relation queries the response was YES. [2024-11-07 19:26:20,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174866 conditions, 105628 events. 47750/105628 cut-off events. For 206/206 co-relation queries the response was YES. Maximal size of possible extension queue 2991. Compared 1280559 event pairs, 42147 based on Foata normal form. 24746/116376 useless extension candidates. Maximal degree in co-relation 168894. Up to 69120 conditions per place. [2024-11-07 19:26:21,450 INFO L140 encePairwiseOnDemand]: 211/262 looper letters, 96 selfloop transitions, 2 changer transitions 0/211 dead transitions. [2024-11-07 19:26:21,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 211 transitions, 634 flow [2024-11-07 19:26:21,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:26:21,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:26:21,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 486 transitions. [2024-11-07 19:26:21,452 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6183206106870229 [2024-11-07 19:26:21,452 INFO L175 Difference]: Start difference. First operand has 209 places, 262 transitions, 540 flow. Second operand 3 states and 486 transitions. [2024-11-07 19:26:21,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 211 transitions, 634 flow [2024-11-07 19:26:21,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 211 transitions, 634 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 19:26:21,458 INFO L231 Difference]: Finished difference. Result has 208 places, 211 transitions, 448 flow [2024-11-07 19:26:21,459 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=448, PETRI_PLACES=208, PETRI_TRANSITIONS=211} [2024-11-07 19:26:21,460 INFO L277 CegarLoopForPetriNet]: 209 programPoint places, -1 predicate places. [2024-11-07 19:26:21,460 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 211 transitions, 448 flow [2024-11-07 19:26:21,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 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 19:26:21,461 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:26:21,461 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-07 19:26:21,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-07 19:26:21,461 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-07 19:26:21,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:26:21,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1120289531, now seen corresponding path program 1 times [2024-11-07 19:26:21,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:26:21,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796937322] [2024-11-07 19:26:21,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:26:21,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:26:21,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:26:21,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:26:21,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:26:21,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796937322] [2024-11-07 19:26:21,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796937322] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:26:21,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596468651] [2024-11-07 19:26:21,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:26:21,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:26:21,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:26:21,510 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 19:26:21,512 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 19:26:21,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:26:21,604 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-07 19:26:21,605 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:26:21,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:26:21,614 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:26:21,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:26:21,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596468651] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:26:21,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:26:21,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-07 19:26:21,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745891999] [2024-11-07 19:26:21,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:26:21,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 19:26:21,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:26:21,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 19:26:21,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-07 19:26:21,630 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 262 [2024-11-07 19:26:21,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 211 transitions, 448 flow. Second operand has 7 states, 7 states have (on average 114.28571428571429) internal successors, (800), 7 states have internal predecessors, (800), 0 states have call successors, (0), 0 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 19:26:21,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:26:21,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 262 [2024-11-07 19:26:21,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:26:27,785 INFO L124 PetriNetUnfolderBase]: 47750/105631 cut-off events. [2024-11-07 19:26:27,786 INFO L125 PetriNetUnfolderBase]: For 206/206 co-relation queries the response was YES. [2024-11-07 19:26:28,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174882 conditions, 105631 events. 47750/105631 cut-off events. For 206/206 co-relation queries the response was YES. Maximal size of possible extension queue 2991. Compared 1280435 event pairs, 42147 based on Foata normal form. 0/91633 useless extension candidates. Maximal degree in co-relation 174869. Up to 69120 conditions per place. [2024-11-07 19:26:28,661 INFO L140 encePairwiseOnDemand]: 259/262 looper letters, 96 selfloop transitions, 5 changer transitions 0/214 dead transitions. [2024-11-07 19:26:28,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 214 transitions, 662 flow [2024-11-07 19:26:28,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 19:26:28,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 19:26:28,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 782 transitions. [2024-11-07 19:26:28,664 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49745547073791346 [2024-11-07 19:26:28,664 INFO L175 Difference]: Start difference. First operand has 208 places, 211 transitions, 448 flow. Second operand 6 states and 782 transitions. [2024-11-07 19:26:28,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 214 transitions, 662 flow [2024-11-07 19:26:28,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 214 transitions, 658 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-07 19:26:28,668 INFO L231 Difference]: Finished difference. Result has 215 places, 214 transitions, 480 flow [2024-11-07 19:26:28,669 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=480, PETRI_PLACES=215, PETRI_TRANSITIONS=214} [2024-11-07 19:26:28,669 INFO L277 CegarLoopForPetriNet]: 209 programPoint places, 6 predicate places. [2024-11-07 19:26:28,669 INFO L471 AbstractCegarLoop]: Abstraction has has 215 places, 214 transitions, 480 flow [2024-11-07 19:26:28,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.28571428571429) internal successors, (800), 7 states have internal predecessors, (800), 0 states have call successors, (0), 0 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 19:26:28,670 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:26:28,670 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2024-11-07 19:26:28,686 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 19:26:28,871 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,SelfDestructingSolverStorable8 [2024-11-07 19:26:28,871 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-07 19:26:28,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:26:28,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1555769309, now seen corresponding path program 2 times [2024-11-07 19:26:28,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:26:28,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760180161] [2024-11-07 19:26:28,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:26:28,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:26:28,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:26:28,926 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-07 19:26:28,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:26:28,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760180161] [2024-11-07 19:26:28,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760180161] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:26:28,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:26:28,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:26:28,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256944134] [2024-11-07 19:26:28,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:26:28,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:26:28,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:26:28,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:26:28,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:26:28,971 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 262 [2024-11-07 19:26:28,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 214 transitions, 480 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 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 19:26:28,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:26:28,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 262 [2024-11-07 19:26:28,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:26:35,654 INFO L124 PetriNetUnfolderBase]: 49801/108783 cut-off events. [2024-11-07 19:26:35,655 INFO L125 PetriNetUnfolderBase]: For 138/138 co-relation queries the response was YES. [2024-11-07 19:26:35,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181101 conditions, 108783 events. 49801/108783 cut-off events. For 138/138 co-relation queries the response was YES. Maximal size of possible extension queue 3038. Compared 1310434 event pairs, 42126 based on Foata normal form. 0/95104 useless extension candidates. Maximal degree in co-relation 181066. Up to 69039 conditions per place. [2024-11-07 19:26:36,290 INFO L140 encePairwiseOnDemand]: 258/262 looper letters, 145 selfloop transitions, 2 changer transitions 0/256 dead transitions. [2024-11-07 19:26:36,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 256 transitions, 858 flow [2024-11-07 19:26:36,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:26:36,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:26:36,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 472 transitions. [2024-11-07 19:26:36,292 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6005089058524173 [2024-11-07 19:26:36,292 INFO L175 Difference]: Start difference. First operand has 215 places, 214 transitions, 480 flow. Second operand 3 states and 472 transitions. [2024-11-07 19:26:36,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 256 transitions, 858 flow [2024-11-07 19:26:36,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 256 transitions, 844 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-07 19:26:36,297 INFO L231 Difference]: Finished difference. Result has 214 places, 212 transitions, 466 flow [2024-11-07 19:26:36,298 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=466, PETRI_PLACES=214, PETRI_TRANSITIONS=212} [2024-11-07 19:26:36,298 INFO L277 CegarLoopForPetriNet]: 209 programPoint places, 5 predicate places. [2024-11-07 19:26:36,298 INFO L471 AbstractCegarLoop]: Abstraction has has 214 places, 212 transitions, 466 flow [2024-11-07 19:26:36,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 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 19:26:36,299 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:26:36,299 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2024-11-07 19:26:36,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-07 19:26:36,299 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-07 19:26:36,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:26:36,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1555769308, now seen corresponding path program 1 times [2024-11-07 19:26:36,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:26:36,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962124807] [2024-11-07 19:26:36,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:26:36,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:26:36,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:26:36,383 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:26:36,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:26:36,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962124807] [2024-11-07 19:26:36,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962124807] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:26:36,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431142405] [2024-11-07 19:26:36,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:26:36,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:26:36,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:26:36,388 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 19:26:36,389 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 19:26:36,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:26:36,493 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 19:26:36,494 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:26:36,511 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:26:36,512 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:26:36,567 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:26:36,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431142405] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:26:36,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:26:36,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-07 19:26:36,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531523985] [2024-11-07 19:26:36,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:26:36,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-07 19:26:36,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:26:36,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-07 19:26:36,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-07 19:26:36,572 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 262 [2024-11-07 19:26:36,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 212 transitions, 466 flow. Second operand has 13 states, 13 states have (on average 114.15384615384616) internal successors, (1484), 13 states have internal predecessors, (1484), 0 states have call successors, (0), 0 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 19:26:36,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:26:36,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 262 [2024-11-07 19:26:36,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:26:43,171 INFO L124 PetriNetUnfolderBase]: 47750/105311 cut-off events. [2024-11-07 19:26:43,171 INFO L125 PetriNetUnfolderBase]: For 459/459 co-relation queries the response was YES. [2024-11-07 19:26:43,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175117 conditions, 105311 events. 47750/105311 cut-off events. For 459/459 co-relation queries the response was YES. Maximal size of possible extension queue 2977. Compared 1272548 event pairs, 42147 based on Foata normal form. 6/91646 useless extension candidates. Maximal degree in co-relation 175064. Up to 69120 conditions per place. [2024-11-07 19:26:43,850 INFO L140 encePairwiseOnDemand]: 259/262 looper letters, 96 selfloop transitions, 11 changer transitions 0/218 dead transitions. [2024-11-07 19:26:43,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 218 transitions, 716 flow [2024-11-07 19:26:43,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 19:26:43,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-07 19:26:43,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1469 transitions. [2024-11-07 19:26:43,853 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4672391857506361 [2024-11-07 19:26:43,853 INFO L175 Difference]: Start difference. First operand has 214 places, 212 transitions, 466 flow. Second operand 12 states and 1469 transitions. [2024-11-07 19:26:43,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 218 transitions, 716 flow [2024-11-07 19:26:44,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 218 transitions, 712 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 19:26:44,084 INFO L231 Difference]: Finished difference. Result has 229 places, 218 transitions, 546 flow [2024-11-07 19:26:44,084 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=546, PETRI_PLACES=229, PETRI_TRANSITIONS=218} [2024-11-07 19:26:44,085 INFO L277 CegarLoopForPetriNet]: 209 programPoint places, 20 predicate places. [2024-11-07 19:26:44,085 INFO L471 AbstractCegarLoop]: Abstraction has has 229 places, 218 transitions, 546 flow [2024-11-07 19:26:44,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 114.15384615384616) internal successors, (1484), 13 states have internal predecessors, (1484), 0 states have call successors, (0), 0 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 19:26:44,086 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:26:44,086 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1] [2024-11-07 19:26:44,098 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 19:26:44,286 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,SelfDestructingSolverStorable10 [2024-11-07 19:26:44,286 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-07 19:26:44,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:26:44,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1672976092, now seen corresponding path program 2 times [2024-11-07 19:26:44,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:26:44,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664749563] [2024-11-07 19:26:44,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:26:44,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:26:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:26:44,499 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-07 19:26:44,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:26:44,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664749563] [2024-11-07 19:26:44,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664749563] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:26:44,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:26:44,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:26:44,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628473765] [2024-11-07 19:26:44,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:26:44,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:26:44,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:26:44,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:26:44,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:26:44,550 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 262 [2024-11-07 19:26:44,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 218 transitions, 546 flow. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 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 19:26:44,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:26:44,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 262 [2024-11-07 19:26:44,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand