./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c --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/weaver/popl20-horseshoe.wvr.c', '-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', 'ceb2af5016fd0ad74653237fbc44a2b3541e4ff971325e3807dab6f19c05af6d'] 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/weaver/popl20-horseshoe.wvr.c -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 ceb2af5016fd0ad74653237fbc44a2b3541e4ff971325e3807dab6f19c05af6d --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 23:40:13,824 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 23:40:13,913 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-07 23:40:13,918 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 23:40:13,919 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 23:40:13,937 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 23:40:13,939 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 23:40:13,939 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 23:40:13,939 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 23:40:13,940 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 23:40:13,940 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 23:40:13,940 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 23:40:13,941 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 23:40:13,941 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 23:40:13,941 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 23:40:13,941 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 23:40:13,941 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 23:40:13,941 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 23:40:13,942 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 23:40:13,942 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 23:40:13,942 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 23:40:13,942 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 23:40:13,942 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 23:40:13,942 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 23:40:13,942 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 23:40:13,942 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-07 23:40:13,942 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 23:40:13,943 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 23:40:13,943 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 23:40:13,943 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 23:40:13,943 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 23:40:13,943 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 23:40:13,943 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 23:40:13,943 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 23:40:13,943 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 23:40:13,943 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 23:40:13,944 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 23:40:13,944 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 23:40:13,944 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 23:40:13,944 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 23:40:13,944 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 23:40:13,944 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 23:40:13,944 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 23:40:13,944 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 23:40:13,944 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 -> ceb2af5016fd0ad74653237fbc44a2b3541e4ff971325e3807dab6f19c05af6d [2024-11-07 23:40:14,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 23:40:14,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 23:40:14,156 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 23:40:14,157 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 23:40:14,158 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 23:40:14,158 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c [2024-11-07 23:40:15,239 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 23:40:15,450 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 23:40:15,451 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c [2024-11-07 23:40:15,458 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/953320e37/a1fd77db7f8d4894a4252916fb889dad/FLAG7eaaca9fa [2024-11-07 23:40:15,806 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/953320e37/a1fd77db7f8d4894a4252916fb889dad [2024-11-07 23:40:15,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 23:40:15,809 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 23:40:15,809 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 23:40:15,809 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 23:40:15,812 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 23:40:15,812 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:40:15" (1/1) ... [2024-11-07 23:40:15,813 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b8dbe40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:40:15, skipping insertion in model container [2024-11-07 23:40:15,813 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:40:15" (1/1) ... [2024-11-07 23:40:15,827 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 23:40:15,956 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 23:40:15,963 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 23:40:15,990 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 23:40:16,001 INFO L204 MainTranslator]: Completed translation [2024-11-07 23:40:16,002 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:40:16 WrapperNode [2024-11-07 23:40:16,002 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 23:40:16,003 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 23:40:16,003 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 23:40:16,003 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 23:40:16,008 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:40:16" (1/1) ... [2024-11-07 23:40:16,013 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:40:16" (1/1) ... [2024-11-07 23:40:16,039 INFO L138 Inliner]: procedures = 24, calls = 41, calls flagged for inlining = 17, calls inlined = 19, statements flattened = 267 [2024-11-07 23:40:16,040 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 23:40:16,041 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 23:40:16,041 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 23:40:16,041 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 23:40:16,047 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:40:16" (1/1) ... [2024-11-07 23:40:16,047 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:40:16" (1/1) ... [2024-11-07 23:40:16,054 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:40:16" (1/1) ... [2024-11-07 23:40:16,071 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-07 23:40:16,071 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:40:16" (1/1) ... [2024-11-07 23:40:16,071 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:40:16" (1/1) ... [2024-11-07 23:40:16,076 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:40:16" (1/1) ... [2024-11-07 23:40:16,078 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:40:16" (1/1) ... [2024-11-07 23:40:16,079 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:40:16" (1/1) ... [2024-11-07 23:40:16,080 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:40:16" (1/1) ... [2024-11-07 23:40:16,083 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 23:40:16,084 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 23:40:16,084 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 23:40:16,084 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 23:40:16,085 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:40:16" (1/1) ... [2024-11-07 23:40:16,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 23:40:16,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:40:16,107 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 23:40:16,109 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 23:40:16,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 23:40:16,125 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-07 23:40:16,125 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-07 23:40:16,125 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-07 23:40:16,125 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-07 23:40:16,125 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-07 23:40:16,125 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-07 23:40:16,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 23:40:16,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 23:40:16,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 23:40:16,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 23:40:16,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-07 23:40:16,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-07 23:40:16,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-07 23:40:16,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 23:40:16,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 23:40:16,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 23:40:16,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 23:40:16,127 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 23:40:16,215 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 23:40:16,216 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 23:40:16,547 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 23:40:16,547 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 23:40:16,803 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 23:40:16,804 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-07 23:40:16,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:40:16 BoogieIcfgContainer [2024-11-07 23:40:16,804 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 23:40:16,806 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 23:40:16,806 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 23:40:16,810 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 23:40:16,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:40:15" (1/3) ... [2024-11-07 23:40:16,810 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b7acbb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:40:16, skipping insertion in model container [2024-11-07 23:40:16,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:40:16" (2/3) ... [2024-11-07 23:40:16,810 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b7acbb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:40:16, skipping insertion in model container [2024-11-07 23:40:16,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:40:16" (3/3) ... [2024-11-07 23:40:16,811 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-horseshoe.wvr.c [2024-11-07 23:40:16,822 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 23:40:16,822 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2024-11-07 23:40:16,822 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 23:40:16,894 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-07 23:40:16,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 79 transitions, 179 flow [2024-11-07 23:40:16,955 INFO L124 PetriNetUnfolderBase]: 7/76 cut-off events. [2024-11-07 23:40:16,957 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-07 23:40:16,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 7/76 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 220 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2024-11-07 23:40:16,961 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 79 transitions, 179 flow [2024-11-07 23:40:16,964 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 75 transitions, 168 flow [2024-11-07 23:40:16,972 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 23:40:16,984 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;@5e26d3c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 23:40:16,984 INFO L334 AbstractCegarLoop]: Starting to check reachability of 47 error locations. [2024-11-07 23:40:16,987 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 23:40:16,987 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-07 23:40:16,987 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 23:40:16,987 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:40:16,987 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-07 23:40:16,988 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-07 23:40:16,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:40:16,991 INFO L85 PathProgramCache]: Analyzing trace with hash 812992, now seen corresponding path program 1 times [2024-11-07 23:40:16,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:40:16,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428467790] [2024-11-07 23:40:16,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:16,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:40:17,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:17,195 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 23:40:17,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:40:17,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428467790] [2024-11-07 23:40:17,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428467790] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:40:17,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:40:17,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:40:17,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408140779] [2024-11-07 23:40:17,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:40:17,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:40:17,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:40:17,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:40:17,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:40:17,242 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 79 [2024-11-07 23:40:17,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 75 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 23:40:17,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:40:17,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 79 [2024-11-07 23:40:17,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:40:17,773 INFO L124 PetriNetUnfolderBase]: 2722/4569 cut-off events. [2024-11-07 23:40:17,773 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2024-11-07 23:40:17,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8613 conditions, 4569 events. 2722/4569 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 29882 event pairs, 2432 based on Foata normal form. 291/3432 useless extension candidates. Maximal degree in co-relation 8140. Up to 3790 conditions per place. [2024-11-07 23:40:17,803 INFO L140 encePairwiseOnDemand]: 61/79 looper letters, 41 selfloop transitions, 7 changer transitions 0/74 dead transitions. [2024-11-07 23:40:17,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 74 transitions, 262 flow [2024-11-07 23:40:17,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:40:17,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:40:17,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 175 transitions. [2024-11-07 23:40:17,812 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5537974683544303 [2024-11-07 23:40:17,813 INFO L175 Difference]: Start difference. First operand has 78 places, 75 transitions, 168 flow. Second operand 4 states and 175 transitions. [2024-11-07 23:40:17,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 74 transitions, 262 flow [2024-11-07 23:40:17,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 74 transitions, 250 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-07 23:40:17,829 INFO L231 Difference]: Finished difference. Result has 73 places, 74 transitions, 202 flow [2024-11-07 23:40:17,831 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=73, PETRI_TRANSITIONS=74} [2024-11-07 23:40:17,833 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -5 predicate places. [2024-11-07 23:40:17,833 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 74 transitions, 202 flow [2024-11-07 23:40:17,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 23:40:17,833 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:40:17,833 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-07 23:40:17,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 23:40:17,834 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-07 23:40:17,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:40:17,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1549173020, now seen corresponding path program 1 times [2024-11-07 23:40:17,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:40:17,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252225636] [2024-11-07 23:40:17,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:17,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:40:17,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:17,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:40:17,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:40:17,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252225636] [2024-11-07 23:40:17,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252225636] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:40:17,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460158530] [2024-11-07 23:40:17,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:17,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:17,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:40:17,975 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 23:40:17,976 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 23:40:18,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:18,041 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-07 23:40:18,044 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:40:18,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:40:18,080 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 23:40:18,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460158530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:40:18,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 23:40:18,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-07 23:40:18,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178966016] [2024-11-07 23:40:18,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:40:18,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 23:40:18,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:40:18,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 23:40:18,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-07 23:40:18,093 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 79 [2024-11-07 23:40:18,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 74 transitions, 202 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states 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 23:40:18,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:40:18,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 79 [2024-11-07 23:40:18,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:40:18,524 INFO L124 PetriNetUnfolderBase]: 2722/4567 cut-off events. [2024-11-07 23:40:18,525 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2024-11-07 23:40:18,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8475 conditions, 4567 events. 2722/4567 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 29890 event pairs, 2432 based on Foata normal form. 2/3144 useless extension candidates. Maximal degree in co-relation 8425. Up to 3780 conditions per place. [2024-11-07 23:40:18,553 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 34 selfloop transitions, 12 changer transitions 0/72 dead transitions. [2024-11-07 23:40:18,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 72 transitions, 286 flow [2024-11-07 23:40:18,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 23:40:18,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 23:40:18,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 222 transitions. [2024-11-07 23:40:18,557 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46835443037974683 [2024-11-07 23:40:18,557 INFO L175 Difference]: Start difference. First operand has 73 places, 74 transitions, 202 flow. Second operand 6 states and 222 transitions. [2024-11-07 23:40:18,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 72 transitions, 286 flow [2024-11-07 23:40:18,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 72 transitions, 286 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 23:40:18,560 INFO L231 Difference]: Finished difference. Result has 76 places, 72 transitions, 218 flow [2024-11-07 23:40:18,560 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=218, PETRI_PLACES=76, PETRI_TRANSITIONS=72} [2024-11-07 23:40:18,561 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -2 predicate places. [2024-11-07 23:40:18,561 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 72 transitions, 218 flow [2024-11-07 23:40:18,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states 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 23:40:18,562 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:40:18,562 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-07 23:40:18,577 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 23:40:18,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:18,766 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-07 23:40:18,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:40:18,766 INFO L85 PathProgramCache]: Analyzing trace with hash -779722574, now seen corresponding path program 1 times [2024-11-07 23:40:18,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:40:18,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487178426] [2024-11-07 23:40:18,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:18,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:40:18,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:18,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:40:18,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:40:18,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487178426] [2024-11-07 23:40:18,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487178426] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:40:18,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016030887] [2024-11-07 23:40:18,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:18,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:18,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:40:18,888 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 23:40:18,890 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 23:40:18,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:18,945 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-07 23:40:18,946 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:40:18,969 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:40:18,970 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:40:19,003 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:40:19,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016030887] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:40:19,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:40:19,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-07 23:40:19,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878149635] [2024-11-07 23:40:19,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:40:19,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 23:40:19,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:40:19,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 23:40:19,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-07 23:40:19,028 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 79 [2024-11-07 23:40:19,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 72 transitions, 218 flow. Second operand has 12 states, 12 states have (on average 30.083333333333332) internal successors, (361), 12 states have internal predecessors, (361), 0 states have call successors, (0), 0 states 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 23:40:19,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:40:19,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 79 [2024-11-07 23:40:19,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:40:19,444 INFO L124 PetriNetUnfolderBase]: 2728/4591 cut-off events. [2024-11-07 23:40:19,445 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2024-11-07 23:40:19,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8569 conditions, 4591 events. 2728/4591 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 30116 event pairs, 2432 based on Foata normal form. 6/3171 useless extension candidates. Maximal degree in co-relation 8427. Up to 3791 conditions per place. [2024-11-07 23:40:19,472 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 39 selfloop transitions, 25 changer transitions 0/90 dead transitions. [2024-11-07 23:40:19,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 90 transitions, 460 flow [2024-11-07 23:40:19,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 23:40:19,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-07 23:40:19,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 360 transitions. [2024-11-07 23:40:19,474 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45569620253164556 [2024-11-07 23:40:19,474 INFO L175 Difference]: Start difference. First operand has 76 places, 72 transitions, 218 flow. Second operand 10 states and 360 transitions. [2024-11-07 23:40:19,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 90 transitions, 460 flow [2024-11-07 23:40:19,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 90 transitions, 402 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-07 23:40:19,478 INFO L231 Difference]: Finished difference. Result has 83 places, 90 transitions, 358 flow [2024-11-07 23:40:19,478 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=358, PETRI_PLACES=83, PETRI_TRANSITIONS=90} [2024-11-07 23:40:19,479 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 5 predicate places. [2024-11-07 23:40:19,479 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 90 transitions, 358 flow [2024-11-07 23:40:19,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 30.083333333333332) internal successors, (361), 12 states have internal predecessors, (361), 0 states have call successors, (0), 0 states 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 23:40:19,479 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:40:19,479 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:40:19,491 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-07 23:40:19,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:19,680 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-07 23:40:19,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:40:19,680 INFO L85 PathProgramCache]: Analyzing trace with hash -698766873, now seen corresponding path program 1 times [2024-11-07 23:40:19,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:40:19,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565928628] [2024-11-07 23:40:19,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:19,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:40:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:19,795 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 23:40:19,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:40:19,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565928628] [2024-11-07 23:40:19,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565928628] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:40:19,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:40:19,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:40:19,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284912315] [2024-11-07 23:40:19,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:40:19,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:40:19,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:40:19,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:40:19,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:40:19,797 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2024-11-07 23:40:19,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 90 transitions, 358 flow. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 23:40:19,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:40:19,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2024-11-07 23:40:19,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:40:20,247 INFO L124 PetriNetUnfolderBase]: 2865/4869 cut-off events. [2024-11-07 23:40:20,247 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2024-11-07 23:40:20,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9137 conditions, 4869 events. 2865/4869 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 31926 event pairs, 2559 based on Foata normal form. 98/3605 useless extension candidates. Maximal degree in co-relation 9041. Up to 3806 conditions per place. [2024-11-07 23:40:20,263 INFO L140 encePairwiseOnDemand]: 68/79 looper letters, 85 selfloop transitions, 5 changer transitions 1/119 dead transitions. [2024-11-07 23:40:20,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 119 transitions, 674 flow [2024-11-07 23:40:20,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 23:40:20,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 23:40:20,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 232 transitions. [2024-11-07 23:40:20,264 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5873417721518988 [2024-11-07 23:40:20,264 INFO L175 Difference]: Start difference. First operand has 83 places, 90 transitions, 358 flow. Second operand 5 states and 232 transitions. [2024-11-07 23:40:20,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 119 transitions, 674 flow [2024-11-07 23:40:20,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 119 transitions, 640 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-07 23:40:20,267 INFO L231 Difference]: Finished difference. Result has 87 places, 92 transitions, 377 flow [2024-11-07 23:40:20,267 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=377, PETRI_PLACES=87, PETRI_TRANSITIONS=92} [2024-11-07 23:40:20,268 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 9 predicate places. [2024-11-07 23:40:20,268 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 92 transitions, 377 flow [2024-11-07 23:40:20,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 23:40:20,268 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:40:20,268 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:40:20,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 23:40:20,268 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-07 23:40:20,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:40:20,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1450275061, now seen corresponding path program 1 times [2024-11-07 23:40:20,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:40:20,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951031023] [2024-11-07 23:40:20,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:20,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:40:20,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:20,384 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 23:40:20,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:40:20,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951031023] [2024-11-07 23:40:20,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951031023] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:40:20,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736613158] [2024-11-07 23:40:20,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:20,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:20,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:40:20,388 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 23:40:20,389 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 23:40:20,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:20,446 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-07 23:40:20,447 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:40:20,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:40:20,461 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 23:40:20,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736613158] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:40:20,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 23:40:20,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-07 23:40:20,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306331869] [2024-11-07 23:40:20,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:40:20,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 23:40:20,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:40:20,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 23:40:20,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-07 23:40:20,462 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2024-11-07 23:40:20,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 92 transitions, 377 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 23:40:20,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:40:20,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2024-11-07 23:40:20,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:40:20,636 INFO L124 PetriNetUnfolderBase]: 1998/3413 cut-off events. [2024-11-07 23:40:20,637 INFO L125 PetriNetUnfolderBase]: For 451/451 co-relation queries the response was YES. [2024-11-07 23:40:20,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6801 conditions, 3413 events. 1998/3413 cut-off events. For 451/451 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 20788 event pairs, 1754 based on Foata normal form. 0/2716 useless extension candidates. Maximal degree in co-relation 6706. Up to 2847 conditions per place. [2024-11-07 23:40:20,650 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 60 selfloop transitions, 1 changer transitions 0/89 dead transitions. [2024-11-07 23:40:20,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 89 transitions, 487 flow [2024-11-07 23:40:20,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 23:40:20,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 23:40:20,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 137 transitions. [2024-11-07 23:40:20,651 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5780590717299579 [2024-11-07 23:40:20,651 INFO L175 Difference]: Start difference. First operand has 87 places, 92 transitions, 377 flow. Second operand 3 states and 137 transitions. [2024-11-07 23:40:20,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 89 transitions, 487 flow [2024-11-07 23:40:20,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 89 transitions, 483 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-07 23:40:20,653 INFO L231 Difference]: Finished difference. Result has 85 places, 89 transitions, 363 flow [2024-11-07 23:40:20,654 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=363, PETRI_PLACES=85, PETRI_TRANSITIONS=89} [2024-11-07 23:40:20,654 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 7 predicate places. [2024-11-07 23:40:20,654 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 89 transitions, 363 flow [2024-11-07 23:40:20,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 23:40:20,654 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:40:20,654 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:40:20,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-07 23:40:20,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:20,855 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-07 23:40:20,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:40:20,855 INFO L85 PathProgramCache]: Analyzing trace with hash 971362461, now seen corresponding path program 1 times [2024-11-07 23:40:20,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:40:20,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814580983] [2024-11-07 23:40:20,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:20,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:40:20,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:20,928 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 23:40:20,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:40:20,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814580983] [2024-11-07 23:40:20,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814580983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:40:20,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:40:20,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 23:40:20,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790570223] [2024-11-07 23:40:20,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:40:20,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 23:40:20,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:40:20,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 23:40:20,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 23:40:20,930 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2024-11-07 23:40:20,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 89 transitions, 363 flow. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 23:40:20,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:40:20,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2024-11-07 23:40:20,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:40:21,119 INFO L124 PetriNetUnfolderBase]: 2002/3445 cut-off events. [2024-11-07 23:40:21,120 INFO L125 PetriNetUnfolderBase]: For 519/519 co-relation queries the response was YES. [2024-11-07 23:40:21,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6964 conditions, 3445 events. 2002/3445 cut-off events. For 519/519 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 19989 event pairs, 750 based on Foata normal form. 72/2808 useless extension candidates. Maximal degree in co-relation 6948. Up to 2102 conditions per place. [2024-11-07 23:40:21,132 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 74 selfloop transitions, 2 changer transitions 1/105 dead transitions. [2024-11-07 23:40:21,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 105 transitions, 557 flow [2024-11-07 23:40:21,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 23:40:21,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 23:40:21,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2024-11-07 23:40:21,133 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6413502109704642 [2024-11-07 23:40:21,133 INFO L175 Difference]: Start difference. First operand has 85 places, 89 transitions, 363 flow. Second operand 3 states and 152 transitions. [2024-11-07 23:40:21,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 105 transitions, 557 flow [2024-11-07 23:40:21,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 105 transitions, 546 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 23:40:21,136 INFO L231 Difference]: Finished difference. Result has 86 places, 89 transitions, 358 flow [2024-11-07 23:40:21,136 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=358, PETRI_PLACES=86, PETRI_TRANSITIONS=89} [2024-11-07 23:40:21,140 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 8 predicate places. [2024-11-07 23:40:21,140 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 89 transitions, 358 flow [2024-11-07 23:40:21,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 23:40:21,140 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:40:21,140 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:40:21,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 23:40:21,141 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-07 23:40:21,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:40:21,141 INFO L85 PathProgramCache]: Analyzing trace with hash -2144902098, now seen corresponding path program 1 times [2024-11-07 23:40:21,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:40:21,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871692794] [2024-11-07 23:40:21,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:21,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:40:21,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:21,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:40:21,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:40:21,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871692794] [2024-11-07 23:40:21,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871692794] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:40:21,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:40:21,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 23:40:21,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484972456] [2024-11-07 23:40:21,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:40:21,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:40:21,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:40:21,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:40:21,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:40:21,183 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 79 [2024-11-07 23:40:21,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 89 transitions, 358 flow. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 23:40:21,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:40:21,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 79 [2024-11-07 23:40:21,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:40:21,580 INFO L124 PetriNetUnfolderBase]: 4006/6941 cut-off events. [2024-11-07 23:40:21,580 INFO L125 PetriNetUnfolderBase]: For 1082/1085 co-relation queries the response was YES. [2024-11-07 23:40:21,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14207 conditions, 6941 events. 4006/6941 cut-off events. For 1082/1085 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 45693 event pairs, 2542 based on Foata normal form. 136/5905 useless extension candidates. Maximal degree in co-relation 14190. Up to 4305 conditions per place. [2024-11-07 23:40:21,646 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 102 selfloop transitions, 4 changer transitions 0/131 dead transitions. [2024-11-07 23:40:21,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 131 transitions, 682 flow [2024-11-07 23:40:21,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:40:21,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:40:21,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 200 transitions. [2024-11-07 23:40:21,648 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6329113924050633 [2024-11-07 23:40:21,648 INFO L175 Difference]: Start difference. First operand has 86 places, 89 transitions, 358 flow. Second operand 4 states and 200 transitions. [2024-11-07 23:40:21,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 131 transitions, 682 flow [2024-11-07 23:40:21,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 131 transitions, 678 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:40:21,650 INFO L231 Difference]: Finished difference. Result has 90 places, 92 transitions, 385 flow [2024-11-07 23:40:21,650 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=385, PETRI_PLACES=90, PETRI_TRANSITIONS=92} [2024-11-07 23:40:21,653 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 12 predicate places. [2024-11-07 23:40:21,654 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 92 transitions, 385 flow [2024-11-07 23:40:21,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 23:40:21,654 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:40:21,654 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:40:21,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-07 23:40:21,654 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-07 23:40:21,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:40:21,654 INFO L85 PathProgramCache]: Analyzing trace with hash 269952940, now seen corresponding path program 1 times [2024-11-07 23:40:21,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:40:21,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303244680] [2024-11-07 23:40:21,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:21,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:40:21,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:21,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:40:21,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:40:21,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303244680] [2024-11-07 23:40:21,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303244680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:40:21,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:40:21,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:40:21,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437432923] [2024-11-07 23:40:21,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:40:21,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 23:40:21,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:40:21,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 23:40:21,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 23:40:21,708 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2024-11-07 23:40:21,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 92 transitions, 385 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:40:21,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:40:21,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2024-11-07 23:40:21,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:40:22,007 INFO L124 PetriNetUnfolderBase]: 2114/3830 cut-off events. [2024-11-07 23:40:22,007 INFO L125 PetriNetUnfolderBase]: For 1149/1476 co-relation queries the response was YES. [2024-11-07 23:40:22,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8507 conditions, 3830 events. 2114/3830 cut-off events. For 1149/1476 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 23744 event pairs, 948 based on Foata normal form. 131/3336 useless extension candidates. Maximal degree in co-relation 8488. Up to 2794 conditions per place. [2024-11-07 23:40:22,028 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 69 selfloop transitions, 3 changer transitions 0/101 dead transitions. [2024-11-07 23:40:22,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 101 transitions, 553 flow [2024-11-07 23:40:22,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 23:40:22,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 23:40:22,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2024-11-07 23:40:22,029 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6118143459915611 [2024-11-07 23:40:22,029 INFO L175 Difference]: Start difference. First operand has 90 places, 92 transitions, 385 flow. Second operand 3 states and 145 transitions. [2024-11-07 23:40:22,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 101 transitions, 553 flow [2024-11-07 23:40:22,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 101 transitions, 550 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:40:22,033 INFO L231 Difference]: Finished difference. Result has 92 places, 94 transitions, 405 flow [2024-11-07 23:40:22,033 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=405, PETRI_PLACES=92, PETRI_TRANSITIONS=94} [2024-11-07 23:40:22,034 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 14 predicate places. [2024-11-07 23:40:22,034 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 94 transitions, 405 flow [2024-11-07 23:40:22,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:40:22,034 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:40:22,034 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-07 23:40:22,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-07 23:40:22,034 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-07 23:40:22,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:40:22,034 INFO L85 PathProgramCache]: Analyzing trace with hash -54126506, now seen corresponding path program 2 times [2024-11-07 23:40:22,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:40:22,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355187721] [2024-11-07 23:40:22,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:22,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:40:22,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:22,157 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:40:22,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:40:22,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355187721] [2024-11-07 23:40:22,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355187721] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:40:22,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162969028] [2024-11-07 23:40:22,158 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 23:40:22,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:22,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:40:22,160 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 23:40:22,161 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 23:40:22,216 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-07 23:40:22,216 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 23:40:22,217 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 23:40:22,217 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:40:22,253 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-07 23:40:22,253 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:40:22,277 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-07 23:40:22,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162969028] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:40:22,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:40:22,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-07 23:40:22,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34157848] [2024-11-07 23:40:22,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:40:22,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-07 23:40:22,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:40:22,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-07 23:40:22,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-07 23:40:22,304 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 79 [2024-11-07 23:40:22,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 94 transitions, 405 flow. Second operand has 14 states, 14 states have (on average 30.142857142857142) internal successors, (422), 14 states have internal predecessors, (422), 0 states have call successors, (0), 0 states 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 23:40:22,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:40:22,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 79 [2024-11-07 23:40:22,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:40:22,742 INFO L124 PetriNetUnfolderBase]: 2117/3773 cut-off events. [2024-11-07 23:40:22,742 INFO L125 PetriNetUnfolderBase]: For 1975/2369 co-relation queries the response was YES. [2024-11-07 23:40:22,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8699 conditions, 3773 events. 2117/3773 cut-off events. For 1975/2369 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 23052 event pairs, 1648 based on Foata normal form. 137/3284 useless extension candidates. Maximal degree in co-relation 8678. Up to 2983 conditions per place. [2024-11-07 23:40:22,755 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 33 selfloop transitions, 36 changer transitions 2/98 dead transitions. [2024-11-07 23:40:22,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 98 transitions, 565 flow [2024-11-07 23:40:22,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-07 23:40:22,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-07 23:40:22,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 475 transitions. [2024-11-07 23:40:22,756 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4294755877034358 [2024-11-07 23:40:22,756 INFO L175 Difference]: Start difference. First operand has 92 places, 94 transitions, 405 flow. Second operand 14 states and 475 transitions. [2024-11-07 23:40:22,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 98 transitions, 565 flow [2024-11-07 23:40:22,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 98 transitions, 531 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-11-07 23:40:22,759 INFO L231 Difference]: Finished difference. Result has 98 places, 96 transitions, 447 flow [2024-11-07 23:40:22,759 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=447, PETRI_PLACES=98, PETRI_TRANSITIONS=96} [2024-11-07 23:40:22,759 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 20 predicate places. [2024-11-07 23:40:22,759 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 96 transitions, 447 flow [2024-11-07 23:40:22,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 30.142857142857142) internal successors, (422), 14 states have internal predecessors, (422), 0 states have call successors, (0), 0 states 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 23:40:22,760 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:40:22,760 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:40:22,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-07 23:40:22,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-07 23:40:22,963 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-07 23:40:22,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:40:22,964 INFO L85 PathProgramCache]: Analyzing trace with hash 485629164, now seen corresponding path program 1 times [2024-11-07 23:40:22,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:40:22,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051568136] [2024-11-07 23:40:22,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:22,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:40:22,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:23,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:40:23,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:40:23,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051568136] [2024-11-07 23:40:23,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051568136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:40:23,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:40:23,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 23:40:23,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969462797] [2024-11-07 23:40:23,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:40:23,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:40:23,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:40:23,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:40:23,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:40:23,035 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2024-11-07 23:40:23,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 96 transitions, 447 flow. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 23:40:23,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:40:23,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2024-11-07 23:40:23,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:40:23,257 INFO L124 PetriNetUnfolderBase]: 2338/4132 cut-off events. [2024-11-07 23:40:23,257 INFO L125 PetriNetUnfolderBase]: For 1377/1817 co-relation queries the response was YES. [2024-11-07 23:40:23,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9176 conditions, 4132 events. 2338/4132 cut-off events. For 1377/1817 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 25273 event pairs, 1835 based on Foata normal form. 224/3724 useless extension candidates. Maximal degree in co-relation 9158. Up to 2899 conditions per place. [2024-11-07 23:40:23,274 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 74 selfloop transitions, 9 changer transitions 6/116 dead transitions. [2024-11-07 23:40:23,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 116 transitions, 693 flow [2024-11-07 23:40:23,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 23:40:23,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 23:40:23,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 225 transitions. [2024-11-07 23:40:23,276 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.569620253164557 [2024-11-07 23:40:23,276 INFO L175 Difference]: Start difference. First operand has 98 places, 96 transitions, 447 flow. Second operand 5 states and 225 transitions. [2024-11-07 23:40:23,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 116 transitions, 693 flow [2024-11-07 23:40:23,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 116 transitions, 550 flow, removed 16 selfloop flow, removed 14 redundant places. [2024-11-07 23:40:23,278 INFO L231 Difference]: Finished difference. Result has 87 places, 96 transitions, 341 flow [2024-11-07 23:40:23,279 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=341, PETRI_PLACES=87, PETRI_TRANSITIONS=96} [2024-11-07 23:40:23,279 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 9 predicate places. [2024-11-07 23:40:23,279 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 96 transitions, 341 flow [2024-11-07 23:40:23,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 23:40:23,279 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:40:23,279 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:40:23,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-07 23:40:23,279 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-07 23:40:23,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:40:23,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1532008515, now seen corresponding path program 1 times [2024-11-07 23:40:23,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:40:23,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956076728] [2024-11-07 23:40:23,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:23,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:40:23,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:23,373 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:40:23,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:40:23,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956076728] [2024-11-07 23:40:23,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956076728] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:40:23,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546527713] [2024-11-07 23:40:23,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:23,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:23,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:40:23,375 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 23:40:23,376 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 23:40:23,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:23,434 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-07 23:40:23,434 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:40:23,501 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:40:23,501 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:40:23,589 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:40:23,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546527713] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:40:23,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:40:23,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-07 23:40:23,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225105475] [2024-11-07 23:40:23,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:40:23,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 23:40:23,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:40:23,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 23:40:23,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-07 23:40:23,618 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 79 [2024-11-07 23:40:23,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 96 transitions, 341 flow. Second operand has 15 states, 15 states have (on average 30.6) internal successors, (459), 15 states have internal predecessors, (459), 0 states have call successors, (0), 0 states 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 23:40:23,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:40:23,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 79 [2024-11-07 23:40:23,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:40:24,105 INFO L124 PetriNetUnfolderBase]: 4014/7384 cut-off events. [2024-11-07 23:40:24,105 INFO L125 PetriNetUnfolderBase]: For 2362/2920 co-relation queries the response was YES. [2024-11-07 23:40:24,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16648 conditions, 7384 events. 4014/7384 cut-off events. For 2362/2920 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 52327 event pairs, 2633 based on Foata normal form. 580/6808 useless extension candidates. Maximal degree in co-relation 16632. Up to 3346 conditions per place. [2024-11-07 23:40:24,132 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 85 selfloop transitions, 38 changer transitions 1/151 dead transitions. [2024-11-07 23:40:24,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 151 transitions, 772 flow [2024-11-07 23:40:24,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 23:40:24,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 23:40:24,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 344 transitions. [2024-11-07 23:40:24,134 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4838255977496484 [2024-11-07 23:40:24,134 INFO L175 Difference]: Start difference. First operand has 87 places, 96 transitions, 341 flow. Second operand 9 states and 344 transitions. [2024-11-07 23:40:24,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 151 transitions, 772 flow [2024-11-07 23:40:24,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 151 transitions, 767 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 23:40:24,137 INFO L231 Difference]: Finished difference. Result has 97 places, 110 transitions, 531 flow [2024-11-07 23:40:24,138 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=531, PETRI_PLACES=97, PETRI_TRANSITIONS=110} [2024-11-07 23:40:24,138 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 19 predicate places. [2024-11-07 23:40:24,138 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 110 transitions, 531 flow [2024-11-07 23:40:24,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 30.6) internal successors, (459), 15 states have internal predecessors, (459), 0 states have call successors, (0), 0 states 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 23:40:24,138 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:40:24,139 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:40:24,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-07 23:40:24,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-07 23:40:24,339 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-07 23:40:24,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:40:24,340 INFO L85 PathProgramCache]: Analyzing trace with hash 973320858, now seen corresponding path program 1 times [2024-11-07 23:40:24,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:40:24,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762949326] [2024-11-07 23:40:24,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:24,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:40:24,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:24,444 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:40:24,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:40:24,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762949326] [2024-11-07 23:40:24,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762949326] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:40:24,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114172297] [2024-11-07 23:40:24,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:24,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:24,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:40:24,446 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 23:40:24,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-07 23:40:24,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:24,511 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-07 23:40:24,513 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:40:24,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 23:40:24,532 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 23:40:24,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114172297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:40:24,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 23:40:24,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-07 23:40:24,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415384690] [2024-11-07 23:40:24,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:40:24,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 23:40:24,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:40:24,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 23:40:24,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-07 23:40:24,533 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2024-11-07 23:40:24,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 110 transitions, 531 flow. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states 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 23:40:24,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:40:24,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2024-11-07 23:40:24,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:40:24,793 INFO L124 PetriNetUnfolderBase]: 2984/5626 cut-off events. [2024-11-07 23:40:24,793 INFO L125 PetriNetUnfolderBase]: For 2498/2941 co-relation queries the response was YES. [2024-11-07 23:40:24,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12790 conditions, 5626 events. 2984/5626 cut-off events. For 2498/2941 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 39494 event pairs, 2436 based on Foata normal form. 213/5161 useless extension candidates. Maximal degree in co-relation 12770. Up to 4367 conditions per place. [2024-11-07 23:40:24,813 INFO L140 encePairwiseOnDemand]: 76/79 looper letters, 80 selfloop transitions, 1 changer transitions 0/108 dead transitions. [2024-11-07 23:40:24,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 108 transitions, 685 flow [2024-11-07 23:40:24,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 23:40:24,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 23:40:24,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2024-11-07 23:40:24,815 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5654008438818565 [2024-11-07 23:40:24,815 INFO L175 Difference]: Start difference. First operand has 97 places, 110 transitions, 531 flow. Second operand 3 states and 134 transitions. [2024-11-07 23:40:24,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 108 transitions, 685 flow [2024-11-07 23:40:24,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 108 transitions, 683 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:40:24,819 INFO L231 Difference]: Finished difference. Result has 96 places, 108 transitions, 523 flow [2024-11-07 23:40:24,819 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=523, PETRI_PLACES=96, PETRI_TRANSITIONS=108} [2024-11-07 23:40:24,820 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 18 predicate places. [2024-11-07 23:40:24,820 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 108 transitions, 523 flow [2024-11-07 23:40:24,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states 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 23:40:24,820 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:40:24,820 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:40:24,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-07 23:40:25,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-07 23:40:25,021 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-07 23:40:25,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:40:25,021 INFO L85 PathProgramCache]: Analyzing trace with hash 973090215, now seen corresponding path program 1 times [2024-11-07 23:40:25,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:40:25,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924857534] [2024-11-07 23:40:25,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:25,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:40:25,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:25,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:40:25,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:40:25,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924857534] [2024-11-07 23:40:25,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924857534] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:40:25,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727391818] [2024-11-07 23:40:25,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:25,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:25,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:40:25,378 INFO L229 MonitoredProcess]: Starting monitored process 8 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 23:40:25,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-07 23:40:25,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:25,439 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-07 23:40:25,441 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:40:25,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-07 23:40:25,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-07 23:40:25,539 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 23:40:25,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-07 23:40:25,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-07 23:40:25,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:40:25,654 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:40:26,060 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 23:40:26,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 44 [2024-11-07 23:40:26,069 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-07 23:40:26,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 53 [2024-11-07 23:40:26,078 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-07 23:40:26,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 28 [2024-11-07 23:40:26,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:40:26,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727391818] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:40:26,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:40:26,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 20 [2024-11-07 23:40:26,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107777950] [2024-11-07 23:40:26,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:40:26,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-07 23:40:26,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:40:26,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-07 23:40:26,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=379, Unknown=2, NotChecked=0, Total=462 [2024-11-07 23:40:26,340 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 79 [2024-11-07 23:40:26,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 108 transitions, 523 flow. Second operand has 22 states, 22 states have (on average 24.454545454545453) internal successors, (538), 22 states have internal predecessors, (538), 0 states have call successors, (0), 0 states 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 23:40:26,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:40:26,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 79 [2024-11-07 23:40:26,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:40:28,098 INFO L124 PetriNetUnfolderBase]: 4053/7003 cut-off events. [2024-11-07 23:40:28,099 INFO L125 PetriNetUnfolderBase]: For 3051/3683 co-relation queries the response was YES. [2024-11-07 23:40:28,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16231 conditions, 7003 events. 4053/7003 cut-off events. For 3051/3683 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 46366 event pairs, 1268 based on Foata normal form. 329/6447 useless extension candidates. Maximal degree in co-relation 16210. Up to 1833 conditions per place. [2024-11-07 23:40:28,127 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 179 selfloop transitions, 51 changer transitions 1/251 dead transitions. [2024-11-07 23:40:28,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 251 transitions, 1413 flow [2024-11-07 23:40:28,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-07 23:40:28,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-07 23:40:28,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 658 transitions. [2024-11-07 23:40:28,130 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39662447257383965 [2024-11-07 23:40:28,130 INFO L175 Difference]: Start difference. First operand has 96 places, 108 transitions, 523 flow. Second operand 21 states and 658 transitions. [2024-11-07 23:40:28,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 251 transitions, 1413 flow [2024-11-07 23:40:28,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 251 transitions, 1412 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:40:28,136 INFO L231 Difference]: Finished difference. Result has 122 places, 127 transitions, 787 flow [2024-11-07 23:40:28,136 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=787, PETRI_PLACES=122, PETRI_TRANSITIONS=127} [2024-11-07 23:40:28,137 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 44 predicate places. [2024-11-07 23:40:28,137 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 127 transitions, 787 flow [2024-11-07 23:40:28,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 24.454545454545453) internal successors, (538), 22 states have internal predecessors, (538), 0 states have call successors, (0), 0 states 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 23:40:28,137 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:40:28,137 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:40:28,152 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-07 23:40:28,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:28,341 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-07 23:40:28,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:40:28,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1332250512, now seen corresponding path program 1 times [2024-11-07 23:40:28,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:40:28,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032536474] [2024-11-07 23:40:28,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:28,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:40:28,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:28,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:40:28,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:40:28,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032536474] [2024-11-07 23:40:28,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032536474] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:40:28,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562718658] [2024-11-07 23:40:28,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:28,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:28,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:40:28,602 INFO L229 MonitoredProcess]: Starting monitored process 9 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 23:40:28,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-07 23:40:28,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:28,671 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-07 23:40:28,673 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:40:28,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-07 23:40:28,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-07 23:40:28,754 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 23:40:28,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-07 23:40:28,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-07 23:40:28,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:40:28,859 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:40:29,211 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 23:40:29,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 42 [2024-11-07 23:40:29,219 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-07 23:40:29,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 49 [2024-11-07 23:40:29,233 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-07 23:40:29,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 26 [2024-11-07 23:40:29,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:40:29,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562718658] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:40:29,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:40:29,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 20 [2024-11-07 23:40:29,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147965348] [2024-11-07 23:40:29,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:40:29,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-07 23:40:29,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:40:29,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-07 23:40:29,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=370, Unknown=1, NotChecked=0, Total=462 [2024-11-07 23:40:29,430 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 79 [2024-11-07 23:40:29,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 127 transitions, 787 flow. Second operand has 22 states, 22 states have (on average 24.318181818181817) internal successors, (535), 22 states have internal predecessors, (535), 0 states have call successors, (0), 0 states 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 23:40:29,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:40:29,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 79 [2024-11-07 23:40:29,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:40:33,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-07 23:40:34,869 INFO L124 PetriNetUnfolderBase]: 4497/7743 cut-off events. [2024-11-07 23:40:34,869 INFO L125 PetriNetUnfolderBase]: For 6723/7375 co-relation queries the response was YES. [2024-11-07 23:40:34,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20216 conditions, 7743 events. 4497/7743 cut-off events. For 6723/7375 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 51582 event pairs, 1242 based on Foata normal form. 362/7529 useless extension candidates. Maximal degree in co-relation 20187. Up to 1804 conditions per place. [2024-11-07 23:40:34,948 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 196 selfloop transitions, 59 changer transitions 2/277 dead transitions. [2024-11-07 23:40:34,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 277 transitions, 1791 flow [2024-11-07 23:40:34,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-07 23:40:34,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-07 23:40:34,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 700 transitions. [2024-11-07 23:40:34,950 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40276179516685845 [2024-11-07 23:40:34,950 INFO L175 Difference]: Start difference. First operand has 122 places, 127 transitions, 787 flow. Second operand 22 states and 700 transitions. [2024-11-07 23:40:34,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 277 transitions, 1791 flow [2024-11-07 23:40:34,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 277 transitions, 1772 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-07 23:40:34,963 INFO L231 Difference]: Finished difference. Result has 147 places, 139 transitions, 1064 flow [2024-11-07 23:40:34,963 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1064, PETRI_PLACES=147, PETRI_TRANSITIONS=139} [2024-11-07 23:40:34,963 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 69 predicate places. [2024-11-07 23:40:34,963 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 139 transitions, 1064 flow [2024-11-07 23:40:34,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 24.318181818181817) internal successors, (535), 22 states have internal predecessors, (535), 0 states have call successors, (0), 0 states 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 23:40:34,964 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:40:34,964 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:40:34,976 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-07 23:40:35,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:35,164 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-07 23:40:35,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:40:35,165 INFO L85 PathProgramCache]: Analyzing trace with hash 101026568, now seen corresponding path program 1 times [2024-11-07 23:40:35,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:40:35,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268281857] [2024-11-07 23:40:35,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:35,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:40:35,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:35,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 23:40:35,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:40:35,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268281857] [2024-11-07 23:40:35,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268281857] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:40:35,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:40:35,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:40:35,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400663135] [2024-11-07 23:40:35,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:40:35,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:40:35,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:40:35,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:40:35,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:40:35,215 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 79 [2024-11-07 23:40:35,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 139 transitions, 1064 flow. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states 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 23:40:35,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:40:35,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 79 [2024-11-07 23:40:35,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:40:35,659 INFO L124 PetriNetUnfolderBase]: 4101/7032 cut-off events. [2024-11-07 23:40:35,659 INFO L125 PetriNetUnfolderBase]: For 10645/11314 co-relation queries the response was YES. [2024-11-07 23:40:35,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20403 conditions, 7032 events. 4101/7032 cut-off events. For 10645/11314 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 46615 event pairs, 1397 based on Foata normal form. 409/7069 useless extension candidates. Maximal degree in co-relation 20366. Up to 2700 conditions per place. [2024-11-07 23:40:35,695 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 135 selfloop transitions, 8 changer transitions 0/168 dead transitions. [2024-11-07 23:40:35,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 168 transitions, 1460 flow [2024-11-07 23:40:35,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:40:35,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:40:35,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 186 transitions. [2024-11-07 23:40:35,696 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5886075949367089 [2024-11-07 23:40:35,696 INFO L175 Difference]: Start difference. First operand has 147 places, 139 transitions, 1064 flow. Second operand 4 states and 186 transitions. [2024-11-07 23:40:35,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 168 transitions, 1460 flow [2024-11-07 23:40:35,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 168 transitions, 1375 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-11-07 23:40:35,725 INFO L231 Difference]: Finished difference. Result has 141 places, 141 transitions, 1030 flow [2024-11-07 23:40:35,726 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=983, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1030, PETRI_PLACES=141, PETRI_TRANSITIONS=141} [2024-11-07 23:40:35,726 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 63 predicate places. [2024-11-07 23:40:35,726 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 141 transitions, 1030 flow [2024-11-07 23:40:35,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states 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 23:40:35,726 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:40:35,726 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:40:35,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-07 23:40:35,726 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-07 23:40:35,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:40:35,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1963773983, now seen corresponding path program 2 times [2024-11-07 23:40:35,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:40:35,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267502366] [2024-11-07 23:40:35,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:35,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:40:35,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:35,777 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 23:40:35,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:40:35,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267502366] [2024-11-07 23:40:35,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267502366] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:40:35,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042305785] [2024-11-07 23:40:35,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 23:40:35,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:35,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:40:35,781 INFO L229 MonitoredProcess]: Starting monitored process 10 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 23:40:35,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-07 23:40:35,842 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 23:40:35,842 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 23:40:35,843 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-07 23:40:35,845 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:40:35,868 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 23:40:35,868 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 23:40:35,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042305785] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:40:35,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 23:40:35,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-07 23:40:35,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278998600] [2024-11-07 23:40:35,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:40:35,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 23:40:35,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:40:35,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 23:40:35,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-07 23:40:35,876 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 79 [2024-11-07 23:40:35,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 141 transitions, 1030 flow. Second operand has 5 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 0 states have call successors, (0), 0 states 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 23:40:35,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:40:35,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 79 [2024-11-07 23:40:35,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:40:36,418 INFO L124 PetriNetUnfolderBase]: 5207/8990 cut-off events. [2024-11-07 23:40:36,418 INFO L125 PetriNetUnfolderBase]: For 17244/17282 co-relation queries the response was YES. [2024-11-07 23:40:36,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27283 conditions, 8990 events. 5207/8990 cut-off events. For 17244/17282 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 60847 event pairs, 1721 based on Foata normal form. 176/8808 useless extension candidates. Maximal degree in co-relation 27246. Up to 2923 conditions per place. [2024-11-07 23:40:36,465 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 159 selfloop transitions, 7 changer transitions 0/190 dead transitions. [2024-11-07 23:40:36,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 190 transitions, 1696 flow [2024-11-07 23:40:36,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:40:36,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:40:36,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 185 transitions. [2024-11-07 23:40:36,466 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5854430379746836 [2024-11-07 23:40:36,466 INFO L175 Difference]: Start difference. First operand has 141 places, 141 transitions, 1030 flow. Second operand 4 states and 185 transitions. [2024-11-07 23:40:36,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 190 transitions, 1696 flow [2024-11-07 23:40:36,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 190 transitions, 1681 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 23:40:36,486 INFO L231 Difference]: Finished difference. Result has 141 places, 140 transitions, 1033 flow [2024-11-07 23:40:36,486 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1019, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1033, PETRI_PLACES=141, PETRI_TRANSITIONS=140} [2024-11-07 23:40:36,486 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 63 predicate places. [2024-11-07 23:40:36,486 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 140 transitions, 1033 flow [2024-11-07 23:40:36,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 0 states have call successors, (0), 0 states 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 23:40:36,486 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:40:36,486 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:40:36,498 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-07 23:40:36,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:36,687 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-07 23:40:36,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:40:36,687 INFO L85 PathProgramCache]: Analyzing trace with hash -747450461, now seen corresponding path program 1 times [2024-11-07 23:40:36,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:40:36,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620931671] [2024-11-07 23:40:36,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:36,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:40:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:36,740 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 23:40:36,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:40:36,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620931671] [2024-11-07 23:40:36,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620931671] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:40:36,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795304882] [2024-11-07 23:40:36,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:36,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:36,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:40:36,742 INFO L229 MonitoredProcess]: Starting monitored process 11 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 23:40:36,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-07 23:40:36,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:36,810 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-07 23:40:36,811 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:40:36,833 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 23:40:36,833 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:40:36,868 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 23:40:36,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795304882] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:40:36,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:40:36,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-07 23:40:36,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606899983] [2024-11-07 23:40:36,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:40:36,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 23:40:36,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:40:36,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 23:40:36,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-07 23:40:36,888 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 79 [2024-11-07 23:40:36,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 140 transitions, 1033 flow. Second operand has 12 states, 12 states have (on average 32.0) internal successors, (384), 12 states have internal predecessors, (384), 0 states have call successors, (0), 0 states 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 23:40:36,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:40:36,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 79 [2024-11-07 23:40:36,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:40:37,921 INFO L124 PetriNetUnfolderBase]: 8150/14507 cut-off events. [2024-11-07 23:40:37,921 INFO L125 PetriNetUnfolderBase]: For 31122/31256 co-relation queries the response was YES. [2024-11-07 23:40:37,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45773 conditions, 14507 events. 8150/14507 cut-off events. For 31122/31256 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 104468 event pairs, 2521 based on Foata normal form. 528/14867 useless extension candidates. Maximal degree in co-relation 45737. Up to 5670 conditions per place. [2024-11-07 23:40:38,001 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 304 selfloop transitions, 13 changer transitions 0/342 dead transitions. [2024-11-07 23:40:38,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 342 transitions, 2969 flow [2024-11-07 23:40:38,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 23:40:38,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-07 23:40:38,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 482 transitions. [2024-11-07 23:40:38,002 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.610126582278481 [2024-11-07 23:40:38,002 INFO L175 Difference]: Start difference. First operand has 141 places, 140 transitions, 1033 flow. Second operand 10 states and 482 transitions. [2024-11-07 23:40:38,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 342 transitions, 2969 flow [2024-11-07 23:40:38,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 342 transitions, 2937 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-07 23:40:38,036 INFO L231 Difference]: Finished difference. Result has 150 places, 149 transitions, 1099 flow [2024-11-07 23:40:38,037 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1019, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1099, PETRI_PLACES=150, PETRI_TRANSITIONS=149} [2024-11-07 23:40:38,037 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 72 predicate places. [2024-11-07 23:40:38,037 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 149 transitions, 1099 flow [2024-11-07 23:40:38,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 32.0) internal successors, (384), 12 states have internal predecessors, (384), 0 states have call successors, (0), 0 states 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 23:40:38,037 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:40:38,038 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:40:38,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-07 23:40:38,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-07 23:40:38,238 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-07 23:40:38,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:40:38,238 INFO L85 PathProgramCache]: Analyzing trace with hash 663272358, now seen corresponding path program 1 times [2024-11-07 23:40:38,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:40:38,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139542982] [2024-11-07 23:40:38,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:38,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:40:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:38,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:40:38,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:40:38,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139542982] [2024-11-07 23:40:38,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139542982] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:40:38,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697388855] [2024-11-07 23:40:38,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:38,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:38,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:40:38,526 INFO L229 MonitoredProcess]: Starting monitored process 12 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 23:40:38,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-07 23:40:38,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:38,593 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-07 23:40:38,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:40:38,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-07 23:40:38,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-07 23:40:38,700 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 23:40:38,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-07 23:40:38,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-07 23:40:38,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:40:38,820 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:40:39,127 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 23:40:39,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 44 [2024-11-07 23:40:39,134 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 23:40:39,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 58 [2024-11-07 23:40:39,142 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 23:40:39,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 36 [2024-11-07 23:40:39,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:40:39,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697388855] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:40:39,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:40:39,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 20 [2024-11-07 23:40:39,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746814685] [2024-11-07 23:40:39,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:40:39,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-07 23:40:39,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:40:39,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-07 23:40:39,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=371, Unknown=3, NotChecked=0, Total=462 [2024-11-07 23:40:39,258 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 79 [2024-11-07 23:40:39,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 149 transitions, 1099 flow. Second operand has 22 states, 22 states have (on average 24.727272727272727) internal successors, (544), 22 states have internal predecessors, (544), 0 states have call successors, (0), 0 states 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 23:40:39,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:40:39,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 79 [2024-11-07 23:40:39,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:40:41,055 INFO L124 PetriNetUnfolderBase]: 9113/14741 cut-off events. [2024-11-07 23:40:41,055 INFO L125 PetriNetUnfolderBase]: For 27313/27996 co-relation queries the response was YES. [2024-11-07 23:40:41,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46219 conditions, 14741 events. 9113/14741 cut-off events. For 27313/27996 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 99304 event pairs, 5764 based on Foata normal form. 95/14301 useless extension candidates. Maximal degree in co-relation 46180. Up to 10556 conditions per place. [2024-11-07 23:40:41,145 INFO L140 encePairwiseOnDemand]: 66/79 looper letters, 195 selfloop transitions, 55 changer transitions 3/275 dead transitions. [2024-11-07 23:40:41,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 275 transitions, 2046 flow [2024-11-07 23:40:41,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-07 23:40:41,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-07 23:40:41,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 636 transitions. [2024-11-07 23:40:41,147 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40253164556962023 [2024-11-07 23:40:41,147 INFO L175 Difference]: Start difference. First operand has 150 places, 149 transitions, 1099 flow. Second operand 20 states and 636 transitions. [2024-11-07 23:40:41,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 275 transitions, 2046 flow [2024-11-07 23:40:41,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 275 transitions, 1980 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-11-07 23:40:41,177 INFO L231 Difference]: Finished difference. Result has 170 places, 152 transitions, 1218 flow [2024-11-07 23:40:41,177 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1069, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1218, PETRI_PLACES=170, PETRI_TRANSITIONS=152} [2024-11-07 23:40:41,178 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 92 predicate places. [2024-11-07 23:40:41,178 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 152 transitions, 1218 flow [2024-11-07 23:40:41,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 24.727272727272727) internal successors, (544), 22 states have internal predecessors, (544), 0 states have call successors, (0), 0 states 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 23:40:41,178 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:40:41,178 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:40:41,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-07 23:40:41,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-07 23:40:41,379 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-07 23:40:41,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:40:41,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1764954553, now seen corresponding path program 1 times [2024-11-07 23:40:41,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:40:41,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548141644] [2024-11-07 23:40:41,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:41,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:40:41,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:41,765 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:40:41,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:40:41,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548141644] [2024-11-07 23:40:41,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548141644] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:40:41,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715988597] [2024-11-07 23:40:41,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:41,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:41,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:40:41,767 INFO L229 MonitoredProcess]: Starting monitored process 13 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 23:40:41,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-07 23:40:41,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:41,838 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-07 23:40:41,839 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:40:41,921 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 23:40:41,921 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:40:41,963 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-07 23:40:41,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 13 [2024-11-07 23:40:41,978 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 23:40:41,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715988597] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-07 23:40:41,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-07 23:40:41,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 5] total 15 [2024-11-07 23:40:41,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983472442] [2024-11-07 23:40:41,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:40:41,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 23:40:41,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:40:41,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 23:40:41,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-11-07 23:40:41,995 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 79 [2024-11-07 23:40:41,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 152 transitions, 1218 flow. Second operand has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states 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 23:40:41,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:40:41,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 79 [2024-11-07 23:40:41,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:40:42,791 INFO L124 PetriNetUnfolderBase]: 6311/11633 cut-off events. [2024-11-07 23:40:42,792 INFO L125 PetriNetUnfolderBase]: For 19825/20209 co-relation queries the response was YES. [2024-11-07 23:40:42,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36151 conditions, 11633 events. 6311/11633 cut-off events. For 19825/20209 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 85303 event pairs, 729 based on Foata normal form. 163/11508 useless extension candidates. Maximal degree in co-relation 36107. Up to 5303 conditions per place. [2024-11-07 23:40:42,843 INFO L140 encePairwiseOnDemand]: 72/79 looper letters, 147 selfloop transitions, 19 changer transitions 0/195 dead transitions. [2024-11-07 23:40:42,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 195 transitions, 1701 flow [2024-11-07 23:40:42,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 23:40:42,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 23:40:42,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 231 transitions. [2024-11-07 23:40:42,844 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5848101265822785 [2024-11-07 23:40:42,844 INFO L175 Difference]: Start difference. First operand has 170 places, 152 transitions, 1218 flow. Second operand 5 states and 231 transitions. [2024-11-07 23:40:42,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 195 transitions, 1701 flow [2024-11-07 23:40:42,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 195 transitions, 1622 flow, removed 2 selfloop flow, removed 14 redundant places. [2024-11-07 23:40:42,889 INFO L231 Difference]: Finished difference. Result has 161 places, 151 transitions, 1179 flow [2024-11-07 23:40:42,889 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1130, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1179, PETRI_PLACES=161, PETRI_TRANSITIONS=151} [2024-11-07 23:40:42,889 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 83 predicate places. [2024-11-07 23:40:42,889 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 151 transitions, 1179 flow [2024-11-07 23:40:42,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states 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 23:40:42,889 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:40:42,890 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:40:42,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-07 23:40:43,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:43,092 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-07 23:40:43,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:40:43,092 INFO L85 PathProgramCache]: Analyzing trace with hash -182045178, now seen corresponding path program 1 times [2024-11-07 23:40:43,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:40:43,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872546672] [2024-11-07 23:40:43,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:43,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:40:43,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:43,419 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:40:43,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:40:43,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872546672] [2024-11-07 23:40:43,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872546672] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:40:43,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664305390] [2024-11-07 23:40:43,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:43,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:43,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:40:43,421 INFO L229 MonitoredProcess]: Starting monitored process 14 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 23:40:43,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-07 23:40:43,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:43,488 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-07 23:40:43,489 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:40:43,571 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 23:40:43,571 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:40:43,605 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-07 23:40:43,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 11 [2024-11-07 23:40:43,625 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 23:40:43,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664305390] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-07 23:40:43,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-07 23:40:43,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 5] total 15 [2024-11-07 23:40:43,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700546880] [2024-11-07 23:40:43,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:40:43,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 23:40:43,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:40:43,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 23:40:43,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-11-07 23:40:43,644 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 79 [2024-11-07 23:40:43,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 151 transitions, 1179 flow. Second operand has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states 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 23:40:43,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:40:43,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 79 [2024-11-07 23:40:43,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:40:44,531 INFO L124 PetriNetUnfolderBase]: 6112/11119 cut-off events. [2024-11-07 23:40:44,531 INFO L125 PetriNetUnfolderBase]: For 22615/23068 co-relation queries the response was YES. [2024-11-07 23:40:44,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35287 conditions, 11119 events. 6112/11119 cut-off events. For 22615/23068 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 79516 event pairs, 726 based on Foata normal form. 103/10886 useless extension candidates. Maximal degree in co-relation 35241. Up to 4990 conditions per place. [2024-11-07 23:40:44,606 INFO L140 encePairwiseOnDemand]: 72/79 looper letters, 145 selfloop transitions, 19 changer transitions 0/193 dead transitions. [2024-11-07 23:40:44,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 193 transitions, 1643 flow [2024-11-07 23:40:44,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 23:40:44,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 23:40:44,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 230 transitions. [2024-11-07 23:40:44,607 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5822784810126582 [2024-11-07 23:40:44,607 INFO L175 Difference]: Start difference. First operand has 161 places, 151 transitions, 1179 flow. Second operand 5 states and 230 transitions. [2024-11-07 23:40:44,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 193 transitions, 1643 flow [2024-11-07 23:40:44,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 193 transitions, 1613 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-07 23:40:44,674 INFO L231 Difference]: Finished difference. Result has 162 places, 149 transitions, 1163 flow [2024-11-07 23:40:44,674 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1125, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1163, PETRI_PLACES=162, PETRI_TRANSITIONS=149} [2024-11-07 23:40:44,674 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 84 predicate places. [2024-11-07 23:40:44,674 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 149 transitions, 1163 flow [2024-11-07 23:40:44,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states 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 23:40:44,675 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:40:44,675 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:40:44,686 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-07 23:40:44,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:44,875 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-07 23:40:44,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:40:44,876 INFO L85 PathProgramCache]: Analyzing trace with hash 318005700, now seen corresponding path program 1 times [2024-11-07 23:40:44,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:40:44,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733866797] [2024-11-07 23:40:44,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:44,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:40:44,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:45,344 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:40:45,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:40:45,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733866797] [2024-11-07 23:40:45,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733866797] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:40:45,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352682231] [2024-11-07 23:40:45,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:45,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:45,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:40:45,347 INFO L229 MonitoredProcess]: Starting monitored process 15 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 23:40:45,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-07 23:40:45,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:45,417 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-07 23:40:45,418 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:40:45,546 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 23:40:45,546 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:40:45,587 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 23:40:45,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2024-11-07 23:40:45,647 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 23:40:45,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352682231] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-07 23:40:45,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-07 23:40:45,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10, 5] total 18 [2024-11-07 23:40:45,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819581347] [2024-11-07 23:40:45,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:40:45,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 23:40:45,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:40:45,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 23:40:45,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2024-11-07 23:40:45,661 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 79 [2024-11-07 23:40:45,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 149 transitions, 1163 flow. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 0 states have call successors, (0), 0 states 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 23:40:45,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:40:45,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 79 [2024-11-07 23:40:45,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:40:46,386 INFO L124 PetriNetUnfolderBase]: 6784/11864 cut-off events. [2024-11-07 23:40:46,386 INFO L125 PetriNetUnfolderBase]: For 25617/25967 co-relation queries the response was YES. [2024-11-07 23:40:46,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37687 conditions, 11864 events. 6784/11864 cut-off events. For 25617/25967 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 82479 event pairs, 357 based on Foata normal form. 150/11870 useless extension candidates. Maximal degree in co-relation 37641. Up to 4688 conditions per place. [2024-11-07 23:40:46,457 INFO L140 encePairwiseOnDemand]: 72/79 looper letters, 146 selfloop transitions, 20 changer transitions 0/193 dead transitions. [2024-11-07 23:40:46,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 193 transitions, 1655 flow [2024-11-07 23:40:46,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 23:40:46,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 23:40:46,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 223 transitions. [2024-11-07 23:40:46,458 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5645569620253165 [2024-11-07 23:40:46,458 INFO L175 Difference]: Start difference. First operand has 162 places, 149 transitions, 1163 flow. Second operand 5 states and 223 transitions. [2024-11-07 23:40:46,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 193 transitions, 1655 flow [2024-11-07 23:40:46,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 193 transitions, 1610 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-07 23:40:46,530 INFO L231 Difference]: Finished difference. Result has 162 places, 149 transitions, 1170 flow [2024-11-07 23:40:46,531 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1118, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1170, PETRI_PLACES=162, PETRI_TRANSITIONS=149} [2024-11-07 23:40:46,531 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 84 predicate places. [2024-11-07 23:40:46,531 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 149 transitions, 1170 flow [2024-11-07 23:40:46,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 0 states have call successors, (0), 0 states 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 23:40:46,531 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:40:46,531 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:40:46,543 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-07 23:40:46,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-07 23:40:46,732 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-07 23:40:46,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:40:46,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1830325998, now seen corresponding path program 1 times [2024-11-07 23:40:46,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:40:46,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775134091] [2024-11-07 23:40:46,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:46,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:40:46,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:46,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:40:46,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:40:46,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775134091] [2024-11-07 23:40:46,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775134091] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:40:46,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677314906] [2024-11-07 23:40:46,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:46,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:46,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:40:46,996 INFO L229 MonitoredProcess]: Starting monitored process 16 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 23:40:46,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-07 23:40:47,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:47,072 INFO L255 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-07 23:40:47,075 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:40:47,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-07 23:40:47,390 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-07 23:40:47,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-11-07 23:40:47,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:40:47,403 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:40:47,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2024-11-07 23:40:47,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2024-11-07 23:40:47,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:40:47,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677314906] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:40:47,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:40:47,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2024-11-07 23:40:47,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759754378] [2024-11-07 23:40:47,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:40:47,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-07 23:40:47,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:40:47,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-07 23:40:47,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2024-11-07 23:40:48,163 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 79 [2024-11-07 23:40:48,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 149 transitions, 1170 flow. Second operand has 23 states, 23 states have (on average 23.73913043478261) internal successors, (546), 23 states have internal predecessors, (546), 0 states have call successors, (0), 0 states 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 23:40:48,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:40:48,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 79 [2024-11-07 23:40:48,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:40:51,768 INFO L124 PetriNetUnfolderBase]: 17337/28122 cut-off events. [2024-11-07 23:40:51,769 INFO L125 PetriNetUnfolderBase]: For 77109/78682 co-relation queries the response was YES. [2024-11-07 23:40:51,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94023 conditions, 28122 events. 17337/28122 cut-off events. For 77109/78682 co-relation queries the response was YES. Maximal size of possible extension queue 736. Compared 210187 event pairs, 3476 based on Foata normal form. 50/27096 useless extension candidates. Maximal degree in co-relation 93977. Up to 3818 conditions per place. [2024-11-07 23:40:51,929 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 390 selfloop transitions, 77 changer transitions 9/499 dead transitions. [2024-11-07 23:40:51,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 499 transitions, 4011 flow [2024-11-07 23:40:51,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-07 23:40:51,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-07 23:40:51,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 827 transitions. [2024-11-07 23:40:51,930 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4026290165530672 [2024-11-07 23:40:51,930 INFO L175 Difference]: Start difference. First operand has 162 places, 149 transitions, 1170 flow. Second operand 26 states and 827 transitions. [2024-11-07 23:40:51,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 499 transitions, 4011 flow [2024-11-07 23:40:52,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 499 transitions, 3920 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-07 23:40:52,065 INFO L231 Difference]: Finished difference. Result has 191 places, 169 transitions, 1498 flow [2024-11-07 23:40:52,065 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1131, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1498, PETRI_PLACES=191, PETRI_TRANSITIONS=169} [2024-11-07 23:40:52,066 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 113 predicate places. [2024-11-07 23:40:52,066 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 169 transitions, 1498 flow [2024-11-07 23:40:52,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 23.73913043478261) internal successors, (546), 23 states have internal predecessors, (546), 0 states have call successors, (0), 0 states 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 23:40:52,066 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:40:52,066 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:40:52,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-07 23:40:52,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:52,270 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-07 23:40:52,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:40:52,271 INFO L85 PathProgramCache]: Analyzing trace with hash 604278011, now seen corresponding path program 1 times [2024-11-07 23:40:52,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:40:52,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764142641] [2024-11-07 23:40:52,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:52,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:40:52,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:52,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:40:52,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:40:52,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764142641] [2024-11-07 23:40:52,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764142641] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:40:52,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811575348] [2024-11-07 23:40:52,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:52,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:52,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:40:52,535 INFO L229 MonitoredProcess]: Starting monitored process 17 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 23:40:52,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-07 23:40:52,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:52,607 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-07 23:40:52,608 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:40:52,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-07 23:40:52,897 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-07 23:40:52,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-07 23:40:52,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:40:52,914 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:40:53,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-07 23:40:53,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-11-07 23:40:53,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:40:53,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811575348] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:40:53,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:40:53,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2024-11-07 23:40:53,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954166444] [2024-11-07 23:40:53,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:40:53,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-07 23:40:53,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:40:53,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-07 23:40:53,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2024-11-07 23:40:53,724 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 79 [2024-11-07 23:40:53,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 169 transitions, 1498 flow. Second operand has 23 states, 23 states have (on average 24.608695652173914) internal successors, (566), 23 states have internal predecessors, (566), 0 states have call successors, (0), 0 states 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 23:40:53,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:40:53,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 79 [2024-11-07 23:40:53,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:40:57,022 INFO L124 PetriNetUnfolderBase]: 14010/23730 cut-off events. [2024-11-07 23:40:57,022 INFO L125 PetriNetUnfolderBase]: For 75028/76531 co-relation queries the response was YES. [2024-11-07 23:40:57,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84380 conditions, 23730 events. 14010/23730 cut-off events. For 75028/76531 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 181360 event pairs, 3476 based on Foata normal form. 589/24150 useless extension candidates. Maximal degree in co-relation 84326. Up to 3289 conditions per place. [2024-11-07 23:40:57,406 INFO L140 encePairwiseOnDemand]: 67/79 looper letters, 295 selfloop transitions, 72 changer transitions 9/401 dead transitions. [2024-11-07 23:40:57,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 401 transitions, 3555 flow [2024-11-07 23:40:57,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-07 23:40:57,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-07 23:40:57,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 664 transitions. [2024-11-07 23:40:57,408 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4002411091018686 [2024-11-07 23:40:57,408 INFO L175 Difference]: Start difference. First operand has 191 places, 169 transitions, 1498 flow. Second operand 21 states and 664 transitions. [2024-11-07 23:40:57,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 401 transitions, 3555 flow [2024-11-07 23:40:57,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 401 transitions, 3438 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-11-07 23:40:57,584 INFO L231 Difference]: Finished difference. Result has 202 places, 169 transitions, 1534 flow [2024-11-07 23:40:57,584 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1381, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1534, PETRI_PLACES=202, PETRI_TRANSITIONS=169} [2024-11-07 23:40:57,584 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 124 predicate places. [2024-11-07 23:40:57,584 INFO L471 AbstractCegarLoop]: Abstraction has has 202 places, 169 transitions, 1534 flow [2024-11-07 23:40:57,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 24.608695652173914) internal successors, (566), 23 states have internal predecessors, (566), 0 states have call successors, (0), 0 states 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 23:40:57,585 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:40:57,585 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:40:57,597 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-07 23:40:57,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:57,785 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-07 23:40:57,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:40:57,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1228211200, now seen corresponding path program 1 times [2024-11-07 23:40:57,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:40:57,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500546225] [2024-11-07 23:40:57,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:57,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:40:57,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:57,835 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 23:40:57,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:40:57,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500546225] [2024-11-07 23:40:57,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500546225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:40:57,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:40:57,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 23:40:57,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087697820] [2024-11-07 23:40:57,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:40:57,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 23:40:57,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:40:57,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 23:40:57,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-07 23:40:57,836 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2024-11-07 23:40:57,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 169 transitions, 1534 flow. Second operand has 5 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 23:40:57,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:40:57,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2024-11-07 23:40:57,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:41:01,183 INFO L124 PetriNetUnfolderBase]: 20747/39043 cut-off events. [2024-11-07 23:41:01,184 INFO L125 PetriNetUnfolderBase]: For 135160/136300 co-relation queries the response was YES. [2024-11-07 23:41:01,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136395 conditions, 39043 events. 20747/39043 cut-off events. For 135160/136300 co-relation queries the response was YES. Maximal size of possible extension queue 892. Compared 339810 event pairs, 4701 based on Foata normal form. 363/38913 useless extension candidates. Maximal degree in co-relation 136341. Up to 12864 conditions per place. [2024-11-07 23:41:01,509 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 217 selfloop transitions, 21 changer transitions 0/270 dead transitions. [2024-11-07 23:41:01,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 270 transitions, 2801 flow [2024-11-07 23:41:01,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:41:01,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:41:01,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 213 transitions. [2024-11-07 23:41:01,510 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6740506329113924 [2024-11-07 23:41:01,510 INFO L175 Difference]: Start difference. First operand has 202 places, 169 transitions, 1534 flow. Second operand 4 states and 213 transitions. [2024-11-07 23:41:01,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 270 transitions, 2801 flow [2024-11-07 23:41:02,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 270 transitions, 2585 flow, removed 3 selfloop flow, removed 20 redundant places. [2024-11-07 23:41:02,070 INFO L231 Difference]: Finished difference. Result has 187 places, 176 transitions, 1537 flow [2024-11-07 23:41:02,070 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1384, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1537, PETRI_PLACES=187, PETRI_TRANSITIONS=176} [2024-11-07 23:41:02,070 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 109 predicate places. [2024-11-07 23:41:02,070 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 176 transitions, 1537 flow [2024-11-07 23:41:02,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 23:41:02,070 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:41:02,070 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:41:02,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-07 23:41:02,071 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-07 23:41:02,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:41:02,071 INFO L85 PathProgramCache]: Analyzing trace with hash 177544983, now seen corresponding path program 1 times [2024-11-07 23:41:02,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:41:02,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125266701] [2024-11-07 23:41:02,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:41:02,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:41:02,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:41:02,178 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:41:02,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:41:02,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125266701] [2024-11-07 23:41:02,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125266701] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:41:02,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703565476] [2024-11-07 23:41:02,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:41:02,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:41:02,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:41:02,183 INFO L229 MonitoredProcess]: Starting monitored process 18 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 23:41:02,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-07 23:41:02,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:41:02,263 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-07 23:41:02,264 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:41:02,310 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 23:41:02,311 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 23:41:02,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703565476] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:41:02,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 23:41:02,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-07 23:41:02,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254830336] [2024-11-07 23:41:02,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:41:02,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:41:02,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:41:02,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:41:02,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-07 23:41:02,316 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2024-11-07 23:41:02,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 176 transitions, 1537 flow. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states 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 23:41:02,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:41:02,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2024-11-07 23:41:02,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:41:07,356 INFO L124 PetriNetUnfolderBase]: 29094/53981 cut-off events. [2024-11-07 23:41:07,356 INFO L125 PetriNetUnfolderBase]: For 211576/214513 co-relation queries the response was YES. [2024-11-07 23:41:07,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195399 conditions, 53981 events. 29094/53981 cut-off events. For 211576/214513 co-relation queries the response was YES. Maximal size of possible extension queue 1209. Compared 487292 event pairs, 8734 based on Foata normal form. 424/52768 useless extension candidates. Maximal degree in co-relation 195346. Up to 15212 conditions per place. [2024-11-07 23:41:08,090 INFO L140 encePairwiseOnDemand]: 76/79 looper letters, 194 selfloop transitions, 19 changer transitions 5/249 dead transitions. [2024-11-07 23:41:08,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 249 transitions, 2479 flow [2024-11-07 23:41:08,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:41:08,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:41:08,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 207 transitions. [2024-11-07 23:41:08,091 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6550632911392406 [2024-11-07 23:41:08,091 INFO L175 Difference]: Start difference. First operand has 187 places, 176 transitions, 1537 flow. Second operand 4 states and 207 transitions. [2024-11-07 23:41:08,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 249 transitions, 2479 flow [2024-11-07 23:41:08,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 249 transitions, 2443 flow, removed 18 selfloop flow, removed 0 redundant places. [2024-11-07 23:41:08,646 INFO L231 Difference]: Finished difference. Result has 192 places, 179 transitions, 1654 flow [2024-11-07 23:41:08,646 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1521, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1654, PETRI_PLACES=192, PETRI_TRANSITIONS=179} [2024-11-07 23:41:08,646 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 114 predicate places. [2024-11-07 23:41:08,646 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 179 transitions, 1654 flow [2024-11-07 23:41:08,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states 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 23:41:08,646 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:41:08,647 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:41:08,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-07 23:41:08,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:41:08,847 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-07 23:41:08,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:41:08,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1555592873, now seen corresponding path program 1 times [2024-11-07 23:41:08,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:41:08,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997154167] [2024-11-07 23:41:08,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:41:08,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:41:08,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:41:08,930 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 23:41:08,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:41:08,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997154167] [2024-11-07 23:41:08,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997154167] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:41:08,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31723488] [2024-11-07 23:41:08,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:41:08,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:41:08,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:41:08,932 INFO L229 MonitoredProcess]: Starting monitored process 19 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 23:41:08,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-07 23:41:09,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:41:09,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-07 23:41:09,006 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:41:09,074 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 23:41:09,074 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:41:09,157 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 23:41:09,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31723488] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:41:09,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:41:09,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-07 23:41:09,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304174267] [2024-11-07 23:41:09,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:41:09,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 23:41:09,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:41:09,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 23:41:09,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-07 23:41:09,188 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 79 [2024-11-07 23:41:09,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 179 transitions, 1654 flow. Second operand has 15 states, 15 states have (on average 31.333333333333332) internal successors, (470), 15 states have internal predecessors, (470), 0 states have call successors, (0), 0 states 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 23:41:09,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:41:09,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 79 [2024-11-07 23:41:09,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:41:13,683 INFO L124 PetriNetUnfolderBase]: 24585/46303 cut-off events. [2024-11-07 23:41:13,684 INFO L125 PetriNetUnfolderBase]: For 207597/210441 co-relation queries the response was YES. [2024-11-07 23:41:13,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168032 conditions, 46303 events. 24585/46303 cut-off events. For 207597/210441 co-relation queries the response was YES. Maximal size of possible extension queue 963. Compared 415590 event pairs, 16558 based on Foata normal form. 852/45388 useless extension candidates. Maximal degree in co-relation 167975. Up to 27373 conditions per place. [2024-11-07 23:41:14,111 INFO L140 encePairwiseOnDemand]: 69/79 looper letters, 169 selfloop transitions, 53 changer transitions 11/264 dead transitions. [2024-11-07 23:41:14,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 264 transitions, 2591 flow [2024-11-07 23:41:14,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-07 23:41:14,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-07 23:41:14,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 475 transitions. [2024-11-07 23:41:14,113 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4625121713729309 [2024-11-07 23:41:14,113 INFO L175 Difference]: Start difference. First operand has 192 places, 179 transitions, 1654 flow. Second operand 13 states and 475 transitions. [2024-11-07 23:41:14,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 264 transitions, 2591 flow [2024-11-07 23:41:14,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 264 transitions, 2547 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-11-07 23:41:14,494 INFO L231 Difference]: Finished difference. Result has 194 places, 170 transitions, 1657 flow [2024-11-07 23:41:14,494 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1541, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1657, PETRI_PLACES=194, PETRI_TRANSITIONS=170} [2024-11-07 23:41:14,495 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 116 predicate places. [2024-11-07 23:41:14,495 INFO L471 AbstractCegarLoop]: Abstraction has has 194 places, 170 transitions, 1657 flow [2024-11-07 23:41:14,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 31.333333333333332) internal successors, (470), 15 states have internal predecessors, (470), 0 states have call successors, (0), 0 states 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 23:41:14,495 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:41:14,495 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:41:14,506 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-07 23:41:14,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-07 23:41:14,696 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-07 23:41:14,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:41:14,696 INFO L85 PathProgramCache]: Analyzing trace with hash -218548556, now seen corresponding path program 2 times [2024-11-07 23:41:14,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:41:14,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696659260] [2024-11-07 23:41:14,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:41:14,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:41:14,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:41:15,183 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 23:41:15,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:41:15,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696659260] [2024-11-07 23:41:15,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696659260] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:41:15,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487058822] [2024-11-07 23:41:15,183 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 23:41:15,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:41:15,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:41:15,185 INFO L229 MonitoredProcess]: Starting monitored process 20 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 23:41:15,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-07 23:41:15,272 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 23:41:15,272 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 23:41:15,273 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-07 23:41:15,277 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:41:15,673 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 23:41:15,673 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:41:15,728 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-07 23:41:15,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 11 [2024-11-07 23:41:16,049 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 23:41:16,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487058822] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:41:16,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:41:16,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30 [2024-11-07 23:41:16,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091731250] [2024-11-07 23:41:16,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:41:16,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-07 23:41:16,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:41:16,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-07 23:41:16,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=851, Unknown=0, NotChecked=0, Total=992 [2024-11-07 23:41:16,253 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 79 [2024-11-07 23:41:16,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 170 transitions, 1657 flow. Second operand has 32 states, 32 states have (on average 30.0625) internal successors, (962), 32 states have internal predecessors, (962), 0 states have call successors, (0), 0 states 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 23:41:16,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:41:16,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 79 [2024-11-07 23:41:16,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand