./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows 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/AutomizerReach.xml', '-i', '../sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', '4e91816f101a416d37c086dd7185cfb4e2bfa63eb286e4a418cb94db27cf2f6f'] 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/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4e91816f101a416d37c086dd7185cfb4e2bfa63eb286e4a418cb94db27cf2f6f --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 23:33:31,349 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 23:33:31,455 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-07 23:33:31,463 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 23:33:31,463 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 23:33:31,483 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 23:33:31,484 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 23:33:31,484 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 23:33:31,485 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 23:33:31,485 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 23:33:31,485 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 23:33:31,486 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 23:33:31,486 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 23:33:31,487 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 23:33:31,487 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 23:33:31,487 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 23:33:31,487 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 23:33:31,487 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 23:33:31,488 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 23:33:31,488 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 23:33:31,488 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 23:33:31,488 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 23:33:31,488 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 23:33:31,488 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 23:33:31,488 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 23:33:31,488 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-07 23:33:31,489 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 23:33:31,489 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 23:33:31,489 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 23:33:31,489 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 23:33:31,489 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 23:33:31,489 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 23:33:31,489 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 23:33:31,489 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 23:33:31,490 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 23:33:31,490 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 23:33:31,490 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 23:33:31,491 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 23:33:31,491 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 23:33:31,491 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 23:33:31,491 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 23:33:31,491 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 23:33:31,491 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 23:33:31,491 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 23:33:31,491 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 ! overflow) ) 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 -> 4e91816f101a416d37c086dd7185cfb4e2bfa63eb286e4a418cb94db27cf2f6f [2024-11-07 23:33:31,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 23:33:31,804 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 23:33:31,807 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 23:33:31,808 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 23:33:31,809 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 23:33:31,810 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i [2024-11-07 23:33:33,091 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 23:33:33,342 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 23:33:33,342 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i [2024-11-07 23:33:33,356 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bcbc55953/d09f2d0b64104e4bb0da29d45174d511/FLAGe73f29eef [2024-11-07 23:33:33,372 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bcbc55953/d09f2d0b64104e4bb0da29d45174d511 [2024-11-07 23:33:33,374 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 23:33:33,376 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 23:33:33,378 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 23:33:33,379 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 23:33:33,382 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 23:33:33,383 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:33:33" (1/1) ... [2024-11-07 23:33:33,384 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@383703cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:33, skipping insertion in model container [2024-11-07 23:33:33,384 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:33:33" (1/1) ... [2024-11-07 23:33:33,420 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 23:33:33,675 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 23:33:33,691 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 23:33:33,743 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 23:33:33,785 INFO L204 MainTranslator]: Completed translation [2024-11-07 23:33:33,787 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:33 WrapperNode [2024-11-07 23:33:33,787 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 23:33:33,788 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 23:33:33,788 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 23:33:33,788 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 23:33:33,795 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:33" (1/1) ... [2024-11-07 23:33:33,814 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:33" (1/1) ... [2024-11-07 23:33:33,845 INFO L138 Inliner]: procedures = 174, calls = 39, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 207 [2024-11-07 23:33:33,845 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 23:33:33,846 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 23:33:33,846 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 23:33:33,846 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 23:33:33,855 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:33" (1/1) ... [2024-11-07 23:33:33,855 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:33" (1/1) ... [2024-11-07 23:33:33,860 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:33" (1/1) ... [2024-11-07 23:33:33,887 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 5, 5, 2]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2024-11-07 23:33:33,887 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:33" (1/1) ... [2024-11-07 23:33:33,887 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:33" (1/1) ... [2024-11-07 23:33:33,901 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:33" (1/1) ... [2024-11-07 23:33:33,904 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:33" (1/1) ... [2024-11-07 23:33:33,908 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:33" (1/1) ... [2024-11-07 23:33:33,910 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:33" (1/1) ... [2024-11-07 23:33:33,915 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 23:33:33,917 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 23:33:33,917 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 23:33:33,917 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 23:33:33,920 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:33" (1/1) ... [2024-11-07 23:33:33,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 23:33:33,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:33:33,962 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 23:33:33,969 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 23:33:33,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 23:33:33,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 23:33:33,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-07 23:33:33,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-07 23:33:33,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 23:33:33,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 23:33:33,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-07 23:33:33,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-07 23:33:33,991 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-07 23:33:33,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 23:33:33,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-07 23:33:33,991 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-07 23:33:33,992 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-07 23:33:33,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-07 23:33:33,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 23:33:33,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 23:33:33,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-07 23:33:33,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-07 23:33:33,992 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-07 23:33:33,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 23:33:33,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 23:33:33,994 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 23:33:34,142 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 23:33:34,143 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 23:33:34,431 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 23:33:34,431 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 23:33:34,784 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 23:33:34,784 INFO L316 CfgBuilder]: Removed 11 assume(true) statements. [2024-11-07 23:33:34,785 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:33:34 BoogieIcfgContainer [2024-11-07 23:33:34,785 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 23:33:34,787 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 23:33:34,788 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 23:33:34,794 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 23:33:34,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:33:33" (1/3) ... [2024-11-07 23:33:34,795 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d44aca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:33:34, skipping insertion in model container [2024-11-07 23:33:34,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:33" (2/3) ... [2024-11-07 23:33:34,795 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d44aca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:33:34, skipping insertion in model container [2024-11-07 23:33:34,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:33:34" (3/3) ... [2024-11-07 23:33:34,796 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_20-callback_racefree.i [2024-11-07 23:33:34,809 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 23:33:34,809 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-07 23:33:34,809 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 23:33:34,854 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-07 23:33:34,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 69 transitions, 145 flow [2024-11-07 23:33:34,946 INFO L124 PetriNetUnfolderBase]: 19/112 cut-off events. [2024-11-07 23:33:34,948 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-07 23:33:34,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 112 events. 19/112 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 380 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 60. Up to 6 conditions per place. [2024-11-07 23:33:34,952 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 69 transitions, 145 flow [2024-11-07 23:33:34,955 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 68 transitions, 143 flow [2024-11-07 23:33:34,965 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 23:33:34,979 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=LoopHeads, 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;@36b2eb28, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 23:33:34,981 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-07 23:33:34,987 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 23:33:34,987 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2024-11-07 23:33:34,987 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 23:33:34,987 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:33:34,988 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-07 23:33:34,988 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-07 23:33:34,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:33:34,992 INFO L85 PathProgramCache]: Analyzing trace with hash 524610273, now seen corresponding path program 1 times [2024-11-07 23:33:34,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:33:34,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889956547] [2024-11-07 23:33:34,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:33:35,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:33:35,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:33:35,382 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 23:33:35,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:33:35,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889956547] [2024-11-07 23:33:35,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889956547] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:33:35,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:33:35,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:33:35,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297370156] [2024-11-07 23:33:35,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:33:35,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:33:35,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:33:35,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:33:35,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:33:35,429 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 69 [2024-11-07 23:33:35,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 68 transitions, 143 flow. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 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 23:33:35,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:33:35,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 69 [2024-11-07 23:33:35,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:33:35,642 INFO L124 PetriNetUnfolderBase]: 134/422 cut-off events. [2024-11-07 23:33:35,642 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-07 23:33:35,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 712 conditions, 422 events. 134/422 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2096 event pairs, 0 based on Foata normal form. 56/428 useless extension candidates. Maximal degree in co-relation 687. Up to 263 conditions per place. [2024-11-07 23:33:35,651 INFO L140 encePairwiseOnDemand]: 55/69 looper letters, 40 selfloop transitions, 3 changer transitions 1/71 dead transitions. [2024-11-07 23:33:35,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 71 transitions, 237 flow [2024-11-07 23:33:35,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:33:35,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:33:35,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 167 transitions. [2024-11-07 23:33:35,666 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.605072463768116 [2024-11-07 23:33:35,667 INFO L175 Difference]: Start difference. First operand has 61 places, 68 transitions, 143 flow. Second operand 4 states and 167 transitions. [2024-11-07 23:33:35,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 71 transitions, 237 flow [2024-11-07 23:33:35,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 71 transitions, 237 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 23:33:35,679 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 131 flow [2024-11-07 23:33:35,682 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=131, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2024-11-07 23:33:35,685 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 2 predicate places. [2024-11-07 23:33:35,685 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 131 flow [2024-11-07 23:33:35,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 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 23:33:35,686 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:33:35,686 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-07 23:33:35,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 23:33:35,686 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-07 23:33:35,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:33:35,687 INFO L85 PathProgramCache]: Analyzing trace with hash -720805163, now seen corresponding path program 1 times [2024-11-07 23:33:35,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:33:35,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252474618] [2024-11-07 23:33:35,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:33:35,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:33:35,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 23:33:35,770 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 23:33:35,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 23:33:35,831 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 23:33:35,833 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 23:33:35,834 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2024-11-07 23:33:35,836 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2024-11-07 23:33:35,836 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2024-11-07 23:33:35,836 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2024-11-07 23:33:35,836 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2024-11-07 23:33:35,836 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2024-11-07 23:33:35,836 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2024-11-07 23:33:35,837 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2024-11-07 23:33:35,837 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2024-11-07 23:33:35,837 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2024-11-07 23:33:35,837 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2024-11-07 23:33:35,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 23:33:35,837 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-07 23:33:35,840 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 23:33:35,840 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-07 23:33:35,870 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-07 23:33:35,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 83 transitions, 182 flow [2024-11-07 23:33:35,927 INFO L124 PetriNetUnfolderBase]: 31/188 cut-off events. [2024-11-07 23:33:35,927 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2024-11-07 23:33:35,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 188 events. 31/188 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 798 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 120. Up to 9 conditions per place. [2024-11-07 23:33:35,928 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 83 transitions, 182 flow [2024-11-07 23:33:35,929 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 83 transitions, 182 flow [2024-11-07 23:33:35,930 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 23:33:35,930 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=LoopHeads, 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;@36b2eb28, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 23:33:35,930 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-07 23:33:35,933 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 23:33:35,934 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2024-11-07 23:33:35,934 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 23:33:35,934 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:33:35,934 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-07 23:33:35,934 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-07 23:33:35,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:33:35,934 INFO L85 PathProgramCache]: Analyzing trace with hash 603829120, now seen corresponding path program 1 times [2024-11-07 23:33:35,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:33:35,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189154476] [2024-11-07 23:33:35,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:33:35,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:33:35,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:33:36,039 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 23:33:36,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:33:36,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189154476] [2024-11-07 23:33:36,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189154476] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:33:36,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:33:36,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:33:36,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500783552] [2024-11-07 23:33:36,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:33:36,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:33:36,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:33:36,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:33:36,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:33:36,050 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 83 [2024-11-07 23:33:36,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 83 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 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 23:33:36,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:33:36,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 83 [2024-11-07 23:33:36,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:33:36,693 INFO L124 PetriNetUnfolderBase]: 2160/4561 cut-off events. [2024-11-07 23:33:36,693 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2024-11-07 23:33:36,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8079 conditions, 4561 events. 2160/4561 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 33914 event pairs, 948 based on Foata normal form. 565/4654 useless extension candidates. Maximal degree in co-relation 1072. Up to 3454 conditions per place. [2024-11-07 23:33:36,723 INFO L140 encePairwiseOnDemand]: 67/83 looper letters, 53 selfloop transitions, 3 changer transitions 1/88 dead transitions. [2024-11-07 23:33:36,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 88 transitions, 306 flow [2024-11-07 23:33:36,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:33:36,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:33:36,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 198 transitions. [2024-11-07 23:33:36,729 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5963855421686747 [2024-11-07 23:33:36,729 INFO L175 Difference]: Start difference. First operand has 74 places, 83 transitions, 182 flow. Second operand 4 states and 198 transitions. [2024-11-07 23:33:36,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 88 transitions, 306 flow [2024-11-07 23:33:36,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 88 transitions, 306 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 23:33:36,733 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 184 flow [2024-11-07 23:33:36,733 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=184, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2024-11-07 23:33:36,734 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 5 predicate places. [2024-11-07 23:33:36,734 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 184 flow [2024-11-07 23:33:36,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 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 23:33:36,734 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:33:36,734 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-07 23:33:36,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 23:33:36,735 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-07 23:33:36,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:33:36,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1137431997, now seen corresponding path program 1 times [2024-11-07 23:33:36,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:33:36,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097454912] [2024-11-07 23:33:36,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:33:36,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:33:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:33:36,922 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:33:36,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:33:36,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097454912] [2024-11-07 23:33:36,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097454912] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:33:36,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788355752] [2024-11-07 23:33:36,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:33:36,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:33:36,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:33:36,924 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 23:33:36,925 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 23:33:37,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:33:37,084 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-07 23:33:37,086 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:33:37,145 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:33:37,145 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 23:33:37,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788355752] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:33:37,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 23:33:37,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-07 23:33:37,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848750753] [2024-11-07 23:33:37,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:33:37,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 23:33:37,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:33:37,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 23:33:37,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-07 23:33:37,160 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 83 [2024-11-07 23:33:37,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 184 flow. Second operand has 6 states, 6 states have (on average 32.5) internal successors, (195), 6 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:33:37,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:33:37,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 83 [2024-11-07 23:33:37,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:33:37,760 INFO L124 PetriNetUnfolderBase]: 1980/4321 cut-off events. [2024-11-07 23:33:37,760 INFO L125 PetriNetUnfolderBase]: For 231/231 co-relation queries the response was YES. [2024-11-07 23:33:37,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7781 conditions, 4321 events. 1980/4321 cut-off events. For 231/231 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 32828 event pairs, 77 based on Foata normal form. 49/4012 useless extension candidates. Maximal degree in co-relation 1128. Up to 2512 conditions per place. [2024-11-07 23:33:37,789 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 73 selfloop transitions, 6 changer transitions 0/110 dead transitions. [2024-11-07 23:33:37,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 110 transitions, 412 flow [2024-11-07 23:33:37,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 23:33:37,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 23:33:37,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 266 transitions. [2024-11-07 23:33:37,791 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5341365461847389 [2024-11-07 23:33:37,791 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 184 flow. Second operand 6 states and 266 transitions. [2024-11-07 23:33:37,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 110 transitions, 412 flow [2024-11-07 23:33:37,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 110 transitions, 410 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:33:37,794 INFO L231 Difference]: Finished difference. Result has 81 places, 73 transitions, 190 flow [2024-11-07 23:33:37,794 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=190, PETRI_PLACES=81, PETRI_TRANSITIONS=73} [2024-11-07 23:33:37,794 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 7 predicate places. [2024-11-07 23:33:37,795 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 73 transitions, 190 flow [2024-11-07 23:33:37,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.5) internal successors, (195), 6 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:33:37,795 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:33:37,795 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-11-07 23:33:37,812 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-07 23:33:37,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:33:38,000 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-07 23:33:38,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:33:38,000 INFO L85 PathProgramCache]: Analyzing trace with hash 900654168, now seen corresponding path program 1 times [2024-11-07 23:33:38,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:33:38,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885171962] [2024-11-07 23:33:38,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:33:38,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:33:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:33:38,091 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:33:38,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:33:38,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885171962] [2024-11-07 23:33:38,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885171962] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:33:38,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:33:38,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 23:33:38,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963712378] [2024-11-07 23:33:38,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:33:38,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:33:38,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:33:38,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:33:38,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:33:38,102 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 83 [2024-11-07 23:33:38,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 73 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 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 23:33:38,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:33:38,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 83 [2024-11-07 23:33:38,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:33:38,582 INFO L124 PetriNetUnfolderBase]: 1896/4064 cut-off events. [2024-11-07 23:33:38,582 INFO L125 PetriNetUnfolderBase]: For 485/485 co-relation queries the response was YES. [2024-11-07 23:33:38,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7504 conditions, 4064 events. 1896/4064 cut-off events. For 485/485 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 29892 event pairs, 347 based on Foata normal form. 49/3807 useless extension candidates. Maximal degree in co-relation 3627. Up to 2658 conditions per place. [2024-11-07 23:33:38,609 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 60 selfloop transitions, 6 changer transitions 0/97 dead transitions. [2024-11-07 23:33:38,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 97 transitions, 368 flow [2024-11-07 23:33:38,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:33:38,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:33:38,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 189 transitions. [2024-11-07 23:33:38,613 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5692771084337349 [2024-11-07 23:33:38,613 INFO L175 Difference]: Start difference. First operand has 81 places, 73 transitions, 190 flow. Second operand 4 states and 189 transitions. [2024-11-07 23:33:38,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 97 transitions, 368 flow [2024-11-07 23:33:38,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 97 transitions, 352 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-11-07 23:33:38,618 INFO L231 Difference]: Finished difference. Result has 79 places, 73 transitions, 190 flow [2024-11-07 23:33:38,618 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=79, PETRI_TRANSITIONS=73} [2024-11-07 23:33:38,619 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 5 predicate places. [2024-11-07 23:33:38,619 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 73 transitions, 190 flow [2024-11-07 23:33:38,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 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 23:33:38,621 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:33:38,621 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:33:38,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 23:33:38,622 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-07 23:33:38,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:33:38,622 INFO L85 PathProgramCache]: Analyzing trace with hash 898886271, now seen corresponding path program 1 times [2024-11-07 23:33:38,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:33:38,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220590751] [2024-11-07 23:33:38,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:33:38,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:33:38,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:33:38,744 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 23:33:38,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:33:38,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220590751] [2024-11-07 23:33:38,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220590751] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:33:38,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950506653] [2024-11-07 23:33:38,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:33:38,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:33:38,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:33:38,747 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 23:33:38,748 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 23:33:38,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:33:38,889 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-07 23:33:38,890 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:33:38,919 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 23:33:38,919 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:33:38,954 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 23:33:38,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950506653] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:33:38,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:33:38,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-07 23:33:38,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057178876] [2024-11-07 23:33:38,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:33:38,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 23:33:38,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:33:38,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 23:33:38,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-07 23:33:38,971 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 83 [2024-11-07 23:33:38,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 73 transitions, 190 flow. Second operand has 10 states, 10 states have (on average 32.9) internal successors, (329), 10 states have internal predecessors, (329), 0 states have call successors, (0), 0 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 23:33:38,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:33:38,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 83 [2024-11-07 23:33:38,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:33:39,139 INFO L124 PetriNetUnfolderBase]: 312/675 cut-off events. [2024-11-07 23:33:39,139 INFO L125 PetriNetUnfolderBase]: For 544/544 co-relation queries the response was YES. [2024-11-07 23:33:39,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1581 conditions, 675 events. 312/675 cut-off events. For 544/544 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3714 event pairs, 0 based on Foata normal form. 56/731 useless extension candidates. Maximal degree in co-relation 201. Up to 266 conditions per place. [2024-11-07 23:33:39,143 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 53 selfloop transitions, 5 changer transitions 0/68 dead transitions. [2024-11-07 23:33:39,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 68 transitions, 292 flow [2024-11-07 23:33:39,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 23:33:39,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 23:33:39,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 277 transitions. [2024-11-07 23:33:39,145 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47676419965576594 [2024-11-07 23:33:39,145 INFO L175 Difference]: Start difference. First operand has 79 places, 73 transitions, 190 flow. Second operand 7 states and 277 transitions. [2024-11-07 23:33:39,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 68 transitions, 292 flow [2024-11-07 23:33:39,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 68 transitions, 283 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 23:33:39,147 INFO L231 Difference]: Finished difference. Result has 45 places, 31 transitions, 101 flow [2024-11-07 23:33:39,147 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=101, PETRI_PLACES=45, PETRI_TRANSITIONS=31} [2024-11-07 23:33:39,148 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, -29 predicate places. [2024-11-07 23:33:39,148 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 31 transitions, 101 flow [2024-11-07 23:33:39,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 32.9) internal successors, (329), 10 states have internal predecessors, (329), 0 states have call successors, (0), 0 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 23:33:39,150 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:33:39,150 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2024-11-07 23:33:39,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-07 23:33:39,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:33:39,355 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-07 23:33:39,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:33:39,356 INFO L85 PathProgramCache]: Analyzing trace with hash -2054718344, now seen corresponding path program 1 times [2024-11-07 23:33:39,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:33:39,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284215449] [2024-11-07 23:33:39,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:33:39,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:33:39,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 23:33:39,391 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 23:33:39,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 23:33:39,415 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 23:33:39,415 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 23:33:39,416 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2024-11-07 23:33:39,417 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2024-11-07 23:33:39,417 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2024-11-07 23:33:39,417 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2024-11-07 23:33:39,417 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2024-11-07 23:33:39,417 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2024-11-07 23:33:39,417 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2024-11-07 23:33:39,417 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2024-11-07 23:33:39,417 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2024-11-07 23:33:39,417 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2024-11-07 23:33:39,417 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2024-11-07 23:33:39,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-07 23:33:39,417 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-07 23:33:39,418 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 23:33:39,418 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-07 23:33:39,458 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-07 23:33:39,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 97 transitions, 221 flow [2024-11-07 23:33:39,478 INFO L124 PetriNetUnfolderBase]: 46/283 cut-off events. [2024-11-07 23:33:39,478 INFO L125 PetriNetUnfolderBase]: For 19/21 co-relation queries the response was YES. [2024-11-07 23:33:39,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 283 events. 46/283 cut-off events. For 19/21 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1308 event pairs, 1 based on Foata normal form. 0/189 useless extension candidates. Maximal degree in co-relation 203. Up to 12 conditions per place. [2024-11-07 23:33:39,479 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 97 transitions, 221 flow [2024-11-07 23:33:39,481 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 97 transitions, 221 flow [2024-11-07 23:33:39,483 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 23:33:39,484 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=LoopHeads, 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;@36b2eb28, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 23:33:39,484 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-07 23:33:39,486 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 23:33:39,486 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2024-11-07 23:33:39,486 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 23:33:39,486 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:33:39,488 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-07 23:33:39,488 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-07 23:33:39,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:33:39,488 INFO L85 PathProgramCache]: Analyzing trace with hash 696408237, now seen corresponding path program 1 times [2024-11-07 23:33:39,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:33:39,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022611809] [2024-11-07 23:33:39,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:33:39,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:33:39,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:33:39,557 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 23:33:39,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:33:39,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022611809] [2024-11-07 23:33:39,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022611809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:33:39,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:33:39,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:33:39,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445758008] [2024-11-07 23:33:39,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:33:39,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:33:39,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:33:39,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:33:39,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:33:39,572 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 97 [2024-11-07 23:33:39,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 97 transitions, 221 flow. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 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 23:33:39,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:33:39,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 97 [2024-11-07 23:33:39,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:33:42,744 INFO L124 PetriNetUnfolderBase]: 23689/40289 cut-off events. [2024-11-07 23:33:42,745 INFO L125 PetriNetUnfolderBase]: For 711/711 co-relation queries the response was YES. [2024-11-07 23:33:42,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74067 conditions, 40289 events. 23689/40289 cut-off events. For 711/711 co-relation queries the response was YES. Maximal size of possible extension queue 1118. Compared 341665 event pairs, 17439 based on Foata normal form. 5361/42263 useless extension candidates. Maximal degree in co-relation 12666. Up to 33341 conditions per place. [2024-11-07 23:33:42,954 INFO L140 encePairwiseOnDemand]: 79/97 looper letters, 61 selfloop transitions, 3 changer transitions 1/100 dead transitions. [2024-11-07 23:33:42,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 100 transitions, 357 flow [2024-11-07 23:33:42,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:33:42,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:33:42,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 224 transitions. [2024-11-07 23:33:42,956 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5773195876288659 [2024-11-07 23:33:42,956 INFO L175 Difference]: Start difference. First operand has 87 places, 97 transitions, 221 flow. Second operand 4 states and 224 transitions. [2024-11-07 23:33:42,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 100 transitions, 357 flow [2024-11-07 23:33:42,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 100 transitions, 357 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 23:33:42,960 INFO L231 Difference]: Finished difference. Result has 92 places, 86 transitions, 219 flow [2024-11-07 23:33:42,960 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=219, PETRI_PLACES=92, PETRI_TRANSITIONS=86} [2024-11-07 23:33:42,960 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 5 predicate places. [2024-11-07 23:33:42,961 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 86 transitions, 219 flow [2024-11-07 23:33:42,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 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 23:33:42,961 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:33:42,961 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-07 23:33:42,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-07 23:33:42,961 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-07 23:33:42,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:33:42,962 INFO L85 PathProgramCache]: Analyzing trace with hash -223016483, now seen corresponding path program 1 times [2024-11-07 23:33:42,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:33:42,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771321049] [2024-11-07 23:33:42,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:33:42,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:33:42,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:33:43,071 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:33:43,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:33:43,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771321049] [2024-11-07 23:33:43,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771321049] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:33:43,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299641552] [2024-11-07 23:33:43,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:33:43,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:33:43,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:33:43,074 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 23:33:43,076 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 23:33:43,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:33:43,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-07 23:33:43,226 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:33:43,259 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:33:43,260 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 23:33:43,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299641552] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:33:43,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 23:33:43,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-07 23:33:43,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053255174] [2024-11-07 23:33:43,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:33:43,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 23:33:43,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:33:43,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 23:33:43,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-07 23:33:43,273 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 97 [2024-11-07 23:33:43,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 86 transitions, 219 flow. Second operand has 6 states, 6 states have (on average 36.5) internal successors, (219), 6 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:33:43,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:33:43,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 97 [2024-11-07 23:33:43,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:33:45,680 INFO L124 PetriNetUnfolderBase]: 21571/38727 cut-off events. [2024-11-07 23:33:45,680 INFO L125 PetriNetUnfolderBase]: For 2010/2010 co-relation queries the response was YES. [2024-11-07 23:33:45,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71090 conditions, 38727 events. 21571/38727 cut-off events. For 2010/2010 co-relation queries the response was YES. Maximal size of possible extension queue 1147. Compared 352268 event pairs, 1456 based on Foata normal form. 392/36402 useless extension candidates. Maximal degree in co-relation 10302. Up to 23839 conditions per place. [2024-11-07 23:33:45,892 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 93 selfloop transitions, 6 changer transitions 0/134 dead transitions. [2024-11-07 23:33:45,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 134 transitions, 511 flow [2024-11-07 23:33:45,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 23:33:45,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 23:33:45,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 310 transitions. [2024-11-07 23:33:45,894 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5326460481099656 [2024-11-07 23:33:45,894 INFO L175 Difference]: Start difference. First operand has 92 places, 86 transitions, 219 flow. Second operand 6 states and 310 transitions. [2024-11-07 23:33:45,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 134 transitions, 511 flow [2024-11-07 23:33:45,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 134 transitions, 509 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:33:45,898 INFO L231 Difference]: Finished difference. Result has 94 places, 85 transitions, 225 flow [2024-11-07 23:33:45,899 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=225, PETRI_PLACES=94, PETRI_TRANSITIONS=85} [2024-11-07 23:33:45,899 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 7 predicate places. [2024-11-07 23:33:45,900 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 85 transitions, 225 flow [2024-11-07 23:33:45,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.5) internal successors, (219), 6 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:33:45,900 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:33:45,900 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-11-07 23:33:45,917 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-07 23:33:46,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:33:46,105 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-07 23:33:46,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:33:46,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1676424345, now seen corresponding path program 1 times [2024-11-07 23:33:46,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:33:46,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296077245] [2024-11-07 23:33:46,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:33:46,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:33:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:33:46,158 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:33:46,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:33:46,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296077245] [2024-11-07 23:33:46,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296077245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:33:46,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:33:46,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 23:33:46,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757281163] [2024-11-07 23:33:46,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:33:46,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:33:46,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:33:46,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:33:46,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:33:46,164 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 97 [2024-11-07 23:33:46,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 85 transitions, 225 flow. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 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 23:33:46,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:33:46,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 97 [2024-11-07 23:33:46,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:33:48,039 INFO L124 PetriNetUnfolderBase]: 20605/37273 cut-off events. [2024-11-07 23:33:48,039 INFO L125 PetriNetUnfolderBase]: For 3390/3390 co-relation queries the response was YES. [2024-11-07 23:33:48,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69077 conditions, 37273 events. 20605/37273 cut-off events. For 3390/3390 co-relation queries the response was YES. Maximal size of possible extension queue 1116. Compared 341550 event pairs, 1609 based on Foata normal form. 392/35462 useless extension candidates. Maximal degree in co-relation 7671. Up to 25210 conditions per place. [2024-11-07 23:33:48,237 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 80 selfloop transitions, 6 changer transitions 0/121 dead transitions. [2024-11-07 23:33:48,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 121 transitions, 467 flow [2024-11-07 23:33:48,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:33:48,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:33:48,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 225 transitions. [2024-11-07 23:33:48,238 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5798969072164949 [2024-11-07 23:33:48,238 INFO L175 Difference]: Start difference. First operand has 94 places, 85 transitions, 225 flow. Second operand 4 states and 225 transitions. [2024-11-07 23:33:48,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 121 transitions, 467 flow [2024-11-07 23:33:48,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 121 transitions, 451 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-11-07 23:33:48,248 INFO L231 Difference]: Finished difference. Result has 92 places, 85 transitions, 225 flow [2024-11-07 23:33:48,248 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=225, PETRI_PLACES=92, PETRI_TRANSITIONS=85} [2024-11-07 23:33:48,249 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 5 predicate places. [2024-11-07 23:33:48,249 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 85 transitions, 225 flow [2024-11-07 23:33:48,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 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 23:33:48,249 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:33:48,250 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:33:48,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-07 23:33:48,250 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-07 23:33:48,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:33:48,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1674298956, now seen corresponding path program 1 times [2024-11-07 23:33:48,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:33:48,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234661058] [2024-11-07 23:33:48,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:33:48,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:33:48,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:33:48,345 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 23:33:48,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:33:48,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234661058] [2024-11-07 23:33:48,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234661058] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:33:48,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290431299] [2024-11-07 23:33:48,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:33:48,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:33:48,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:33:48,349 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 23:33:48,351 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 23:33:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:33:48,686 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-07 23:33:48,687 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:33:48,715 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 23:33:48,716 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:33:48,749 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 23:33:48,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290431299] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:33:48,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:33:48,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-07 23:33:48,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424290251] [2024-11-07 23:33:48,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:33:48,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 23:33:48,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:33:48,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 23:33:48,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-07 23:33:48,762 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 97 [2024-11-07 23:33:48,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 85 transitions, 225 flow. Second operand has 10 states, 10 states have (on average 36.9) internal successors, (369), 10 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:33:48,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:33:48,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 97 [2024-11-07 23:33:48,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:33:50,702 INFO L124 PetriNetUnfolderBase]: 19177/34051 cut-off events. [2024-11-07 23:33:50,702 INFO L125 PetriNetUnfolderBase]: For 4264/4264 co-relation queries the response was YES. [2024-11-07 23:33:50,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63636 conditions, 34051 events. 19177/34051 cut-off events. For 4264/4264 co-relation queries the response was YES. Maximal size of possible extension queue 1006. Compared 299116 event pairs, 611 based on Foata normal form. 56/32125 useless extension candidates. Maximal degree in co-relation 7086. Up to 22852 conditions per place. [2024-11-07 23:33:50,867 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 101 selfloop transitions, 7 changer transitions 0/143 dead transitions. [2024-11-07 23:33:50,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 143 transitions, 572 flow [2024-11-07 23:33:50,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 23:33:50,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 23:33:50,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 355 transitions. [2024-11-07 23:33:50,868 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5228276877761414 [2024-11-07 23:33:50,868 INFO L175 Difference]: Start difference. First operand has 92 places, 85 transitions, 225 flow. Second operand 7 states and 355 transitions. [2024-11-07 23:33:50,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 143 transitions, 572 flow [2024-11-07 23:33:50,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 143 transitions, 559 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 23:33:50,873 INFO L231 Difference]: Finished difference. Result has 99 places, 88 transitions, 261 flow [2024-11-07 23:33:50,874 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=261, PETRI_PLACES=99, PETRI_TRANSITIONS=88} [2024-11-07 23:33:50,874 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 12 predicate places. [2024-11-07 23:33:50,874 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 88 transitions, 261 flow [2024-11-07 23:33:50,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 36.9) internal successors, (369), 10 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:33:50,874 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:33:50,875 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1] [2024-11-07 23:33:50,886 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 23:33:51,075 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,SelfDestructingSolverStorable10 [2024-11-07 23:33:51,075 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-07 23:33:51,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:33:51,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1339218316, now seen corresponding path program 1 times [2024-11-07 23:33:51,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:33:51,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524542919] [2024-11-07 23:33:51,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:33:51,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:33:51,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 23:33:51,117 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 23:33:51,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 23:33:51,146 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 23:33:51,148 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 23:33:51,149 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2024-11-07 23:33:51,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2024-11-07 23:33:51,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2024-11-07 23:33:51,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2024-11-07 23:33:51,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2024-11-07 23:33:51,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2024-11-07 23:33:51,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2024-11-07 23:33:51,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2024-11-07 23:33:51,150 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2024-11-07 23:33:51,150 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2024-11-07 23:33:51,150 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2024-11-07 23:33:51,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-07 23:33:51,150 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-07 23:33:51,150 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 23:33:51,150 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-07 23:33:51,181 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-07 23:33:51,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 111 transitions, 262 flow [2024-11-07 23:33:51,212 INFO L124 PetriNetUnfolderBase]: 69/418 cut-off events. [2024-11-07 23:33:51,212 INFO L125 PetriNetUnfolderBase]: For 48/51 co-relation queries the response was YES. [2024-11-07 23:33:51,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 469 conditions, 418 events. 69/418 cut-off events. For 48/51 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2050 event pairs, 6 based on Foata normal form. 0/281 useless extension candidates. Maximal degree in co-relation 311. Up to 32 conditions per place. [2024-11-07 23:33:51,215 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 111 transitions, 262 flow [2024-11-07 23:33:51,216 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 111 transitions, 262 flow [2024-11-07 23:33:51,218 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 23:33:51,218 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=LoopHeads, 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;@36b2eb28, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 23:33:51,218 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-07 23:33:51,221 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 23:33:51,222 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2024-11-07 23:33:51,222 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 23:33:51,222 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:33:51,222 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-07 23:33:51,223 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-07 23:33:51,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:33:51,223 INFO L85 PathProgramCache]: Analyzing trace with hash 802347624, now seen corresponding path program 1 times [2024-11-07 23:33:51,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:33:51,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108643383] [2024-11-07 23:33:51,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:33:51,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:33:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:33:51,288 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 23:33:51,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:33:51,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108643383] [2024-11-07 23:33:51,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108643383] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:33:51,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:33:51,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:33:51,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226675419] [2024-11-07 23:33:51,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:33:51,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:33:51,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:33:51,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:33:51,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:33:51,294 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 111 [2024-11-07 23:33:51,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 111 transitions, 262 flow. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 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 23:33:51,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:33:51,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 111 [2024-11-07 23:33:51,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:34:11,483 INFO L124 PetriNetUnfolderBase]: 228940/345166 cut-off events. [2024-11-07 23:34:11,483 INFO L125 PetriNetUnfolderBase]: For 9411/9411 co-relation queries the response was YES. [2024-11-07 23:34:12,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 648065 conditions, 345166 events. 228940/345166 cut-off events. For 9411/9411 co-relation queries the response was YES. Maximal size of possible extension queue 8046. Compared 3158500 event pairs, 183944 based on Foata normal form. 47708/369801 useless extension candidates. Maximal degree in co-relation 74008. Up to 298890 conditions per place. [2024-11-07 23:34:13,576 INFO L140 encePairwiseOnDemand]: 91/111 looper letters, 69 selfloop transitions, 3 changer transitions 1/112 dead transitions. [2024-11-07 23:34:13,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 112 transitions, 410 flow [2024-11-07 23:34:13,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:34:13,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:34:13,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 250 transitions. [2024-11-07 23:34:13,578 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5630630630630631 [2024-11-07 23:34:13,578 INFO L175 Difference]: Start difference. First operand has 100 places, 111 transitions, 262 flow. Second operand 4 states and 250 transitions. [2024-11-07 23:34:13,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 112 transitions, 410 flow [2024-11-07 23:34:13,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 112 transitions, 410 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 23:34:13,584 INFO L231 Difference]: Finished difference. Result has 105 places, 98 transitions, 256 flow [2024-11-07 23:34:13,584 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=256, PETRI_PLACES=105, PETRI_TRANSITIONS=98} [2024-11-07 23:34:13,584 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 5 predicate places. [2024-11-07 23:34:13,584 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 98 transitions, 256 flow [2024-11-07 23:34:13,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 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 23:34:13,585 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:34:13,585 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-07 23:34:13,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-07 23:34:13,585 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-07 23:34:13,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:34:13,585 INFO L85 PathProgramCache]: Analyzing trace with hash -990386499, now seen corresponding path program 1 times [2024-11-07 23:34:13,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:34:13,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942092295] [2024-11-07 23:34:13,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:34:13,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:34:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:34:13,680 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:34:13,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:34:13,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942092295] [2024-11-07 23:34:13,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942092295] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:34:13,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450421626] [2024-11-07 23:34:13,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:34:13,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:34:13,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:34:13,683 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 23:34:13,685 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 23:34:13,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:34:13,858 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-07 23:34:13,859 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:34:13,885 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:34:13,885 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 23:34:13,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450421626] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:34:13,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 23:34:13,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-07 23:34:13,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899438381] [2024-11-07 23:34:13,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:34:13,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 23:34:13,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:34:13,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 23:34:13,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-07 23:34:13,893 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 111 [2024-11-07 23:34:13,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 98 transitions, 256 flow. Second operand has 6 states, 6 states have (on average 40.5) internal successors, (243), 6 states have internal predecessors, (243), 0 states have call successors, (0), 0 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 23:34:13,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:34:13,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 111 [2024-11-07 23:34:13,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand