./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/parallel-misc-1.wvr.c', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', 'faddac23864cc4e42f962ac43a8d0f59593853dbb1d55e3baabe0c76b2187dd4'] 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/parallel-misc-1.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash faddac23864cc4e42f962ac43a8d0f59593853dbb1d55e3baabe0c76b2187dd4 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 11:25:26,430 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 11:25:26,525 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-07 11:25:26,531 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 11:25:26,531 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 11:25:26,559 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 11:25:26,559 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 11:25:26,559 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 11:25:26,560 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 11:25:26,560 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 11:25:26,560 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 11:25:26,560 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 11:25:26,560 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 11:25:26,560 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 11:25:26,560 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 11:25:26,561 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 11:25:26,561 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 11:25:26,561 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 11:25:26,561 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 11:25:26,561 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 11:25:26,561 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 11:25:26,562 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 11:25:26,562 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 11:25:26,562 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 11:25:26,562 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 11:25:26,562 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 11:25:26,562 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 11:25:26,562 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 11:25:26,562 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 11:25:26,563 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 11:25:26,563 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 11:25:26,563 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 11:25:26,563 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:25:26,563 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 11:25:26,563 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 11:25:26,563 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 11:25:26,564 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 11:25:26,564 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 11:25:26,564 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 11:25:26,564 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 11:25:26,564 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 11:25:26,564 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 11:25:26,564 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 ! call(reach_error())) ) 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 -> faddac23864cc4e42f962ac43a8d0f59593853dbb1d55e3baabe0c76b2187dd4 [2024-11-07 11:25:26,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 11:25:26,862 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 11:25:26,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 11:25:26,867 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 11:25:26,867 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 11:25:26,869 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2024-11-07 11:25:28,192 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 11:25:28,455 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 11:25:28,456 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2024-11-07 11:25:28,467 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a13e654bd/532082dd8a764c1c83f4fae42ee40ec2/FLAGb3adf5ade [2024-11-07 11:25:28,761 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a13e654bd/532082dd8a764c1c83f4fae42ee40ec2 [2024-11-07 11:25:28,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 11:25:28,764 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 11:25:28,765 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 11:25:28,765 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 11:25:28,768 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 11:25:28,769 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:25:28" (1/1) ... [2024-11-07 11:25:28,770 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dc5a444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:28, skipping insertion in model container [2024-11-07 11:25:28,770 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:25:28" (1/1) ... [2024-11-07 11:25:28,784 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 11:25:28,937 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c[2781,2794] [2024-11-07 11:25:28,946 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:25:28,955 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 11:25:28,976 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c[2781,2794] [2024-11-07 11:25:28,982 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:25:28,995 INFO L204 MainTranslator]: Completed translation [2024-11-07 11:25:28,997 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:28 WrapperNode [2024-11-07 11:25:28,997 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 11:25:28,998 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 11:25:28,998 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 11:25:28,998 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 11:25:29,004 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:28" (1/1) ... [2024-11-07 11:25:29,013 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:28" (1/1) ... [2024-11-07 11:25:29,055 INFO L138 Inliner]: procedures = 22, calls = 31, calls flagged for inlining = 17, calls inlined = 31, statements flattened = 277 [2024-11-07 11:25:29,057 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 11:25:29,058 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 11:25:29,058 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 11:25:29,058 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 11:25:29,067 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:28" (1/1) ... [2024-11-07 11:25:29,067 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:28" (1/1) ... [2024-11-07 11:25:29,074 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:28" (1/1) ... [2024-11-07 11:25:29,091 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 1 writes are split as follows [0, 1]. [2024-11-07 11:25:29,092 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:28" (1/1) ... [2024-11-07 11:25:29,092 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:28" (1/1) ... [2024-11-07 11:25:29,101 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:28" (1/1) ... [2024-11-07 11:25:29,104 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:28" (1/1) ... [2024-11-07 11:25:29,106 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:28" (1/1) ... [2024-11-07 11:25:29,107 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:28" (1/1) ... [2024-11-07 11:25:29,109 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 11:25:29,110 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 11:25:29,110 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 11:25:29,111 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 11:25:29,111 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:28" (1/1) ... [2024-11-07 11:25:29,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:25:29,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:25:29,139 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 11:25:29,142 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 11:25:29,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 11:25:29,164 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-07 11:25:29,164 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-07 11:25:29,164 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-07 11:25:29,164 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-07 11:25:29,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 11:25:29,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 11:25:29,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 11:25:29,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 11:25:29,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-07 11:25:29,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 11:25:29,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 11:25:29,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 11:25:29,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 11:25:29,166 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 11:25:29,258 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 11:25:29,260 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 11:25:29,712 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 11:25:29,712 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 11:25:30,150 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 11:25:30,151 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-07 11:25:30,151 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:25:30 BoogieIcfgContainer [2024-11-07 11:25:30,151 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 11:25:30,154 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 11:25:30,154 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 11:25:30,159 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 11:25:30,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:25:28" (1/3) ... [2024-11-07 11:25:30,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d049701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:25:30, skipping insertion in model container [2024-11-07 11:25:30,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:28" (2/3) ... [2024-11-07 11:25:30,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d049701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:25:30, skipping insertion in model container [2024-11-07 11:25:30,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:25:30" (3/3) ... [2024-11-07 11:25:30,162 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-1.wvr.c [2024-11-07 11:25:30,177 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 11:25:30,178 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-07 11:25:30,178 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 11:25:30,230 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-07 11:25:30,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 24 places, 20 transitions, 54 flow [2024-11-07 11:25:30,300 INFO L124 PetriNetUnfolderBase]: 3/18 cut-off events. [2024-11-07 11:25:30,303 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 11:25:30,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 18 events. 3/18 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 10 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2024-11-07 11:25:30,306 INFO L82 GeneralOperation]: Start removeDead. Operand has 24 places, 20 transitions, 54 flow [2024-11-07 11:25:30,308 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 21 places, 17 transitions, 46 flow [2024-11-07 11:25:30,320 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 11:25:30,330 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;@34990bb4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 11:25:30,334 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-07 11:25:30,345 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 11:25:30,345 INFO L124 PetriNetUnfolderBase]: 3/16 cut-off events. [2024-11-07 11:25:30,345 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 11:25:30,346 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:25:30,346 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:25:30,347 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:25:30,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:25:30,351 INFO L85 PathProgramCache]: Analyzing trace with hash 21008040, now seen corresponding path program 1 times [2024-11-07 11:25:30,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:25:30,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093881250] [2024-11-07 11:25:30,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:30,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:25:30,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:31,036 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 11:25:31,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:25:31,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093881250] [2024-11-07 11:25:31,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093881250] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:25:31,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:25:31,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:25:31,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250484638] [2024-11-07 11:25:31,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:25:31,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:25:31,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:25:31,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:25:31,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:25:31,070 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 20 [2024-11-07 11:25:31,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 46 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states 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 11:25:31,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:25:31,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 20 [2024-11-07 11:25:31,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:25:31,267 INFO L124 PetriNetUnfolderBase]: 93/152 cut-off events. [2024-11-07 11:25:31,268 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-07 11:25:31,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 152 events. 93/152 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 429 event pairs, 8 based on Foata normal form. 1/95 useless extension candidates. Maximal degree in co-relation 267. Up to 102 conditions per place. [2024-11-07 11:25:31,272 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 25 selfloop transitions, 10 changer transitions 1/39 dead transitions. [2024-11-07 11:25:31,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 39 transitions, 177 flow [2024-11-07 11:25:31,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:25:31,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:25:31,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 62 transitions. [2024-11-07 11:25:31,286 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.62 [2024-11-07 11:25:31,288 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 46 flow. Second operand 5 states and 62 transitions. [2024-11-07 11:25:31,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 39 transitions, 177 flow [2024-11-07 11:25:31,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 39 transitions, 159 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-07 11:25:31,297 INFO L231 Difference]: Finished difference. Result has 24 places, 26 transitions, 101 flow [2024-11-07 11:25:31,299 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=101, PETRI_PLACES=24, PETRI_TRANSITIONS=26} [2024-11-07 11:25:31,302 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 3 predicate places. [2024-11-07 11:25:31,302 INFO L471 AbstractCegarLoop]: Abstraction has has 24 places, 26 transitions, 101 flow [2024-11-07 11:25:31,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states 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 11:25:31,303 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:25:31,303 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:25:31,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 11:25:31,303 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:25:31,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:25:31,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1326643493, now seen corresponding path program 1 times [2024-11-07 11:25:31,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:25:31,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285459777] [2024-11-07 11:25:31,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:31,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:25:31,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:31,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:25:31,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:25:31,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285459777] [2024-11-07 11:25:31,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285459777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:25:31,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:25:31,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:25:31,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409625309] [2024-11-07 11:25:31,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:25:31,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:25:31,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:25:31,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:25:31,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:25:31,520 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 20 [2024-11-07 11:25:31,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 26 transitions, 101 flow. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states 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 11:25:31,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:25:31,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 20 [2024-11-07 11:25:31,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:25:31,667 INFO L124 PetriNetUnfolderBase]: 121/208 cut-off events. [2024-11-07 11:25:31,667 INFO L125 PetriNetUnfolderBase]: For 166/166 co-relation queries the response was YES. [2024-11-07 11:25:31,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 652 conditions, 208 events. 121/208 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 709 event pairs, 41 based on Foata normal form. 8/192 useless extension candidates. Maximal degree in co-relation 368. Up to 107 conditions per place. [2024-11-07 11:25:31,671 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 31 selfloop transitions, 6 changer transitions 0/40 dead transitions. [2024-11-07 11:25:31,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 40 transitions, 230 flow [2024-11-07 11:25:31,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:25:31,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:25:31,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 45 transitions. [2024-11-07 11:25:31,674 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-11-07 11:25:31,674 INFO L175 Difference]: Start difference. First operand has 24 places, 26 transitions, 101 flow. Second operand 4 states and 45 transitions. [2024-11-07 11:25:31,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 40 transitions, 230 flow [2024-11-07 11:25:31,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 40 transitions, 224 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-07 11:25:31,679 INFO L231 Difference]: Finished difference. Result has 30 places, 30 transitions, 153 flow [2024-11-07 11:25:31,679 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=153, PETRI_PLACES=30, PETRI_TRANSITIONS=30} [2024-11-07 11:25:31,680 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 9 predicate places. [2024-11-07 11:25:31,680 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 30 transitions, 153 flow [2024-11-07 11:25:31,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states 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 11:25:31,680 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:25:31,680 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:25:31,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 11:25:31,681 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:25:31,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:25:31,682 INFO L85 PathProgramCache]: Analyzing trace with hash 2063276826, now seen corresponding path program 1 times [2024-11-07 11:25:31,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:25:31,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190166731] [2024-11-07 11:25:31,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:31,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:25:31,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:31,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:25:31,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:25:31,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190166731] [2024-11-07 11:25:31,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190166731] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:25:31,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:25:31,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:25:31,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514711761] [2024-11-07 11:25:31,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:25:31,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:25:31,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:25:31,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:25:31,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:25:31,831 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 20 [2024-11-07 11:25:31,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 30 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states 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 11:25:31,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:25:31,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 20 [2024-11-07 11:25:31,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:25:31,937 INFO L124 PetriNetUnfolderBase]: 96/171 cut-off events. [2024-11-07 11:25:31,937 INFO L125 PetriNetUnfolderBase]: For 310/310 co-relation queries the response was YES. [2024-11-07 11:25:31,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 599 conditions, 171 events. 96/171 cut-off events. For 310/310 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 562 event pairs, 26 based on Foata normal form. 5/169 useless extension candidates. Maximal degree in co-relation 497. Up to 88 conditions per place. [2024-11-07 11:25:31,940 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 28 selfloop transitions, 4 changer transitions 4/39 dead transitions. [2024-11-07 11:25:31,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 39 transitions, 268 flow [2024-11-07 11:25:31,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:25:31,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:25:31,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 44 transitions. [2024-11-07 11:25:31,944 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-11-07 11:25:31,944 INFO L175 Difference]: Start difference. First operand has 30 places, 30 transitions, 153 flow. Second operand 4 states and 44 transitions. [2024-11-07 11:25:31,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 39 transitions, 268 flow [2024-11-07 11:25:31,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 39 transitions, 264 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-07 11:25:31,949 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 139 flow [2024-11-07 11:25:31,949 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=139, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-11-07 11:25:31,950 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 13 predicate places. [2024-11-07 11:25:31,950 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 139 flow [2024-11-07 11:25:31,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states 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 11:25:31,951 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:25:31,951 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:25:31,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 11:25:31,951 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:25:31,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:25:31,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1339064740, now seen corresponding path program 1 times [2024-11-07 11:25:31,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:25:31,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271472753] [2024-11-07 11:25:31,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:31,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:25:31,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:32,068 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 11:25:32,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:25:32,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271472753] [2024-11-07 11:25:32,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271472753] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:25:32,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887167555] [2024-11-07 11:25:32,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:32,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:25:32,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:25:32,072 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 11:25:32,074 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 11:25:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:32,170 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 11:25:32,174 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:25:32,276 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 11:25:32,277 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:25:32,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:25:32,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887167555] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-07 11:25:32,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-07 11:25:32,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2024-11-07 11:25:32,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689569452] [2024-11-07 11:25:32,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:25:32,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:25:32,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:25:32,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:25:32,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-07 11:25:32,343 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 20 [2024-11-07 11:25:32,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 139 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states 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 11:25:32,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:25:32,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 20 [2024-11-07 11:25:32,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:25:32,436 INFO L124 PetriNetUnfolderBase]: 76/129 cut-off events. [2024-11-07 11:25:32,436 INFO L125 PetriNetUnfolderBase]: For 310/310 co-relation queries the response was YES. [2024-11-07 11:25:32,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 479 conditions, 129 events. 76/129 cut-off events. For 310/310 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 339 event pairs, 12 based on Foata normal form. 9/133 useless extension candidates. Maximal degree in co-relation 452. Up to 80 conditions per place. [2024-11-07 11:25:32,439 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 26 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2024-11-07 11:25:32,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 35 transitions, 243 flow [2024-11-07 11:25:32,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:25:32,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:25:32,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 46 transitions. [2024-11-07 11:25:32,441 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46 [2024-11-07 11:25:32,441 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 139 flow. Second operand 5 states and 46 transitions. [2024-11-07 11:25:32,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 35 transitions, 243 flow [2024-11-07 11:25:32,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 35 transitions, 201 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-11-07 11:25:32,444 INFO L231 Difference]: Finished difference. Result has 32 places, 29 transitions, 138 flow [2024-11-07 11:25:32,444 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=138, PETRI_PLACES=32, PETRI_TRANSITIONS=29} [2024-11-07 11:25:32,444 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 11 predicate places. [2024-11-07 11:25:32,445 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 29 transitions, 138 flow [2024-11-07 11:25:32,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states 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 11:25:32,445 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:25:32,445 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:25:32,463 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 11:25:32,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:25:32,650 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:25:32,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:25:32,651 INFO L85 PathProgramCache]: Analyzing trace with hash -94130901, now seen corresponding path program 1 times [2024-11-07 11:25:32,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:25:32,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492919286] [2024-11-07 11:25:32,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:32,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:25:32,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:32,783 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 11:25:32,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:25:32,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492919286] [2024-11-07 11:25:32,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492919286] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:25:32,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972270596] [2024-11-07 11:25:32,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:32,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:25:32,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:25:32,786 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 11:25:32,789 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 11:25:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:32,877 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 11:25:32,879 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:25:32,916 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 11:25:32,916 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:25:32,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:25:32,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972270596] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-07 11:25:32,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-07 11:25:32,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2024-11-07 11:25:32,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144109995] [2024-11-07 11:25:32,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:25:32,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:25:32,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:25:32,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:25:32,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-07 11:25:32,959 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 20 [2024-11-07 11:25:32,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 29 transitions, 138 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states 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 11:25:32,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:25:32,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 20 [2024-11-07 11:25:32,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:25:33,030 INFO L124 PetriNetUnfolderBase]: 59/102 cut-off events. [2024-11-07 11:25:33,033 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2024-11-07 11:25:33,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 374 conditions, 102 events. 59/102 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 213 event pairs, 5 based on Foata normal form. 9/107 useless extension candidates. Maximal degree in co-relation 351. Up to 80 conditions per place. [2024-11-07 11:25:33,035 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 26 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2024-11-07 11:25:33,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 35 transitions, 228 flow [2024-11-07 11:25:33,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:25:33,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:25:33,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 47 transitions. [2024-11-07 11:25:33,038 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47 [2024-11-07 11:25:33,038 INFO L175 Difference]: Start difference. First operand has 32 places, 29 transitions, 138 flow. Second operand 5 states and 47 transitions. [2024-11-07 11:25:33,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 35 transitions, 228 flow [2024-11-07 11:25:33,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 35 transitions, 225 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 11:25:33,040 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 159 flow [2024-11-07 11:25:33,040 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=159, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2024-11-07 11:25:33,043 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 14 predicate places. [2024-11-07 11:25:33,043 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 159 flow [2024-11-07 11:25:33,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states 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 11:25:33,043 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:25:33,043 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:25:33,062 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 11:25:33,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:25:33,244 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:25:33,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:25:33,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1914839235, now seen corresponding path program 1 times [2024-11-07 11:25:33,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:25:33,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667922069] [2024-11-07 11:25:33,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:33,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:25:33,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:33,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:25:33,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:25:33,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667922069] [2024-11-07 11:25:33,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667922069] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:25:33,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062331597] [2024-11-07 11:25:33,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:33,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:25:33,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:25:33,974 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 11:25:33,976 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 11:25:34,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:34,065 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-07 11:25:34,067 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:25:34,100 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 15 treesize of output 1 [2024-11-07 11:25:34,355 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 69 treesize of output 49 [2024-11-07 11:25:34,391 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 11:25:34,391 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:25:35,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:25:35,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062331597] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:25:35,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:25:35,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 16 [2024-11-07 11:25:35,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494535570] [2024-11-07 11:25:35,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:25:35,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-07 11:25:35,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:25:35,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-07 11:25:35,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-11-07 11:25:35,430 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 20 [2024-11-07 11:25:35,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 159 flow. Second operand has 16 states, 16 states have (on average 7.25) internal successors, (116), 16 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 11:25:35,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:25:35,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 20 [2024-11-07 11:25:35,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:25:35,692 INFO L124 PetriNetUnfolderBase]: 72/129 cut-off events. [2024-11-07 11:25:35,692 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2024-11-07 11:25:35,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 517 conditions, 129 events. 72/129 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 324 event pairs, 0 based on Foata normal form. 1/126 useless extension candidates. Maximal degree in co-relation 491. Up to 87 conditions per place. [2024-11-07 11:25:35,696 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 31 selfloop transitions, 17 changer transitions 3/54 dead transitions. [2024-11-07 11:25:35,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 54 transitions, 357 flow [2024-11-07 11:25:35,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 11:25:35,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 11:25:35,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-11-07 11:25:35,699 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-11-07 11:25:35,699 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 159 flow. Second operand 9 states and 88 transitions. [2024-11-07 11:25:35,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 54 transitions, 357 flow [2024-11-07 11:25:35,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 54 transitions, 354 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 11:25:35,704 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 275 flow [2024-11-07 11:25:35,705 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=275, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2024-11-07 11:25:35,705 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 24 predicate places. [2024-11-07 11:25:35,705 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 275 flow [2024-11-07 11:25:35,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.25) internal successors, (116), 16 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 11:25:35,706 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:25:35,706 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:25:35,724 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-07 11:25:35,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:25:35,907 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:25:35,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:25:35,907 INFO L85 PathProgramCache]: Analyzing trace with hash -168671343, now seen corresponding path program 2 times [2024-11-07 11:25:35,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:25:35,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360307403] [2024-11-07 11:25:35,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:35,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:25:35,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:37,253 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 11:25:37,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:25:37,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360307403] [2024-11-07 11:25:37,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360307403] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:25:37,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210503800] [2024-11-07 11:25:37,255 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:25:37,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:25:37,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:25:37,258 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 11:25:37,269 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 11:25:37,356 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:25:37,356 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:25:37,358 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-07 11:25:37,360 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:25:37,374 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 15 treesize of output 1 [2024-11-07 11:25:37,536 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 69 treesize of output 49 [2024-11-07 11:25:37,589 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 11:25:37,590 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:25:38,424 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:25:38,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210503800] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:25:38,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:25:38,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2024-11-07 11:25:38,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49188445] [2024-11-07 11:25:38,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:25:38,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-07 11:25:38,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:25:38,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-07 11:25:38,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2024-11-07 11:25:38,427 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 20 [2024-11-07 11:25:38,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 275 flow. Second operand has 16 states, 16 states have (on average 7.125) internal successors, (114), 16 states have internal predecessors, (114), 0 states have call successors, (0), 0 states 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 11:25:38,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:25:38,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 20 [2024-11-07 11:25:38,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:25:38,654 INFO L124 PetriNetUnfolderBase]: 72/131 cut-off events. [2024-11-07 11:25:38,654 INFO L125 PetriNetUnfolderBase]: For 283/283 co-relation queries the response was YES. [2024-11-07 11:25:38,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 642 conditions, 131 events. 72/131 cut-off events. For 283/283 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 332 event pairs, 2 based on Foata normal form. 1/128 useless extension candidates. Maximal degree in co-relation 610. Up to 97 conditions per place. [2024-11-07 11:25:38,658 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 26 selfloop transitions, 20 changer transitions 3/52 dead transitions. [2024-11-07 11:25:38,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 52 transitions, 418 flow [2024-11-07 11:25:38,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 11:25:38,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-07 11:25:38,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 96 transitions. [2024-11-07 11:25:38,662 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48 [2024-11-07 11:25:38,663 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 275 flow. Second operand 10 states and 96 transitions. [2024-11-07 11:25:38,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 52 transitions, 418 flow [2024-11-07 11:25:38,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 52 transitions, 380 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-11-07 11:25:38,666 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 298 flow [2024-11-07 11:25:38,666 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=298, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2024-11-07 11:25:38,667 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 31 predicate places. [2024-11-07 11:25:38,667 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 298 flow [2024-11-07 11:25:38,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.125) internal successors, (114), 16 states have internal predecessors, (114), 0 states have call successors, (0), 0 states 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 11:25:38,667 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:25:38,667 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:25:38,684 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 11:25:38,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-07 11:25:38,872 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:25:38,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:25:38,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1822197659, now seen corresponding path program 3 times [2024-11-07 11:25:38,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:25:38,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858967984] [2024-11-07 11:25:38,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:38,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:25:38,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:39,475 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 11:25:39,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:25:39,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858967984] [2024-11-07 11:25:39,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858967984] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:25:39,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672114302] [2024-11-07 11:25:39,476 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:25:39,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:25:39,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:25:39,479 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 11:25:39,481 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 11:25:39,567 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-07 11:25:39,567 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:25:39,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-07 11:25:39,571 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:25:39,802 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 69 treesize of output 49 [2024-11-07 11:25:39,893 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 11:25:39,893 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:25:40,184 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:25:40,185 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 233 treesize of output 145 [2024-11-07 11:25:40,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:25:40,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672114302] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:25:40,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:25:40,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-11-07 11:25:40,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942472619] [2024-11-07 11:25:40,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:25:40,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-07 11:25:40,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:25:40,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-07 11:25:40,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2024-11-07 11:25:40,579 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 20 [2024-11-07 11:25:40,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 298 flow. Second operand has 18 states, 18 states have (on average 7.0) internal successors, (126), 18 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 11:25:40,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:25:40,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 20 [2024-11-07 11:25:40,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:25:40,884 INFO L124 PetriNetUnfolderBase]: 95/170 cut-off events. [2024-11-07 11:25:40,884 INFO L125 PetriNetUnfolderBase]: For 376/376 co-relation queries the response was YES. [2024-11-07 11:25:40,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 849 conditions, 170 events. 95/170 cut-off events. For 376/376 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 490 event pairs, 0 based on Foata normal form. 1/167 useless extension candidates. Maximal degree in co-relation 815. Up to 107 conditions per place. [2024-11-07 11:25:40,886 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 38 selfloop transitions, 22 changer transitions 4/67 dead transitions. [2024-11-07 11:25:40,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 67 transitions, 551 flow [2024-11-07 11:25:40,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 11:25:40,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-07 11:25:40,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-11-07 11:25:40,888 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-11-07 11:25:40,888 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 298 flow. Second operand 12 states and 116 transitions. [2024-11-07 11:25:40,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 67 transitions, 551 flow [2024-11-07 11:25:40,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 67 transitions, 460 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-11-07 11:25:40,891 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 324 flow [2024-11-07 11:25:40,891 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=324, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2024-11-07 11:25:40,892 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 34 predicate places. [2024-11-07 11:25:40,892 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 324 flow [2024-11-07 11:25:40,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.0) internal successors, (126), 18 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 11:25:40,892 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:25:40,892 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:25:40,908 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 11:25:41,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:25:41,097 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:25:41,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:25:41,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1625165103, now seen corresponding path program 4 times [2024-11-07 11:25:41,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:25:41,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557833151] [2024-11-07 11:25:41,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:41,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:25:41,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:41,589 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 11:25:41,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:25:41,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557833151] [2024-11-07 11:25:41,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557833151] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:25:41,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261085997] [2024-11-07 11:25:41,590 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 11:25:41,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:25:41,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:25:41,592 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 11:25:41,593 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 11:25:41,679 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 11:25:41,679 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:25:41,684 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-07 11:25:41,686 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:25:41,844 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 77 treesize of output 49 [2024-11-07 11:25:41,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:25:41,883 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:25:42,146 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:25:42,146 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 200 treesize of output 144 [2024-11-07 11:25:42,436 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:25:42,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261085997] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:25:42,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:25:42,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2024-11-07 11:25:42,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876692286] [2024-11-07 11:25:42,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:25:42,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-07 11:25:42,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:25:42,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-07 11:25:42,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-11-07 11:25:42,440 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 20 [2024-11-07 11:25:42,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 324 flow. Second operand has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:25:42,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:25:42,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 20 [2024-11-07 11:25:42,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:25:42,770 INFO L124 PetriNetUnfolderBase]: 96/175 cut-off events. [2024-11-07 11:25:42,771 INFO L125 PetriNetUnfolderBase]: For 470/470 co-relation queries the response was YES. [2024-11-07 11:25:42,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 879 conditions, 175 events. 96/175 cut-off events. For 470/470 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 521 event pairs, 0 based on Foata normal form. 1/170 useless extension candidates. Maximal degree in co-relation 859. Up to 133 conditions per place. [2024-11-07 11:25:42,774 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 40 selfloop transitions, 18 changer transitions 3/64 dead transitions. [2024-11-07 11:25:42,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 64 transitions, 515 flow [2024-11-07 11:25:42,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 11:25:42,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 11:25:42,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-11-07 11:25:42,776 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4681818181818182 [2024-11-07 11:25:42,776 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 324 flow. Second operand 11 states and 103 transitions. [2024-11-07 11:25:42,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 64 transitions, 515 flow [2024-11-07 11:25:42,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 64 transitions, 457 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-11-07 11:25:42,784 INFO L231 Difference]: Finished difference. Result has 60 places, 47 transitions, 337 flow [2024-11-07 11:25:42,784 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=337, PETRI_PLACES=60, PETRI_TRANSITIONS=47} [2024-11-07 11:25:42,785 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 39 predicate places. [2024-11-07 11:25:42,786 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 47 transitions, 337 flow [2024-11-07 11:25:42,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:25:42,786 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:25:42,786 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:25:42,804 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-07 11:25:42,990 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,SelfDestructingSolverStorable8 [2024-11-07 11:25:42,991 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:25:42,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:25:42,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1825793813, now seen corresponding path program 5 times [2024-11-07 11:25:42,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:25:42,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313807568] [2024-11-07 11:25:42,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:42,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:25:43,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:43,462 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 11:25:43,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:25:43,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313807568] [2024-11-07 11:25:43,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313807568] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:25:43,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731764032] [2024-11-07 11:25:43,462 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 11:25:43,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:25:43,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:25:43,465 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 11:25:43,468 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 11:25:43,550 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:25:43,550 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:25:43,557 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-07 11:25:43,560 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:25:43,580 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 15 treesize of output 1 [2024-11-07 11:25:43,772 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 77 treesize of output 49 [2024-11-07 11:25:43,829 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 11:25:43,829 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:25:44,581 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:25:44,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731764032] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:25:44,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:25:44,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-11-07 11:25:44,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774229264] [2024-11-07 11:25:44,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:25:44,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-07 11:25:44,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:25:44,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-07 11:25:44,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2024-11-07 11:25:44,583 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 20 [2024-11-07 11:25:44,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 47 transitions, 337 flow. Second operand has 18 states, 18 states have (on average 6.944444444444445) internal successors, (125), 18 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 11:25:44,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:25:44,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 20 [2024-11-07 11:25:44,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:25:45,243 INFO L124 PetriNetUnfolderBase]: 125/230 cut-off events. [2024-11-07 11:25:45,243 INFO L125 PetriNetUnfolderBase]: For 984/984 co-relation queries the response was YES. [2024-11-07 11:25:45,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1185 conditions, 230 events. 125/230 cut-off events. For 984/984 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 732 event pairs, 1 based on Foata normal form. 1/225 useless extension candidates. Maximal degree in co-relation 1010. Up to 140 conditions per place. [2024-11-07 11:25:45,247 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 48 selfloop transitions, 41 changer transitions 5/97 dead transitions. [2024-11-07 11:25:45,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 97 transitions, 857 flow [2024-11-07 11:25:45,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-07 11:25:45,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-07 11:25:45,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 168 transitions. [2024-11-07 11:25:45,249 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-11-07 11:25:45,249 INFO L175 Difference]: Start difference. First operand has 60 places, 47 transitions, 337 flow. Second operand 18 states and 168 transitions. [2024-11-07 11:25:45,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 97 transitions, 857 flow [2024-11-07 11:25:45,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 97 transitions, 790 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-11-07 11:25:45,258 INFO L231 Difference]: Finished difference. Result has 71 places, 68 transitions, 612 flow [2024-11-07 11:25:45,258 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=612, PETRI_PLACES=71, PETRI_TRANSITIONS=68} [2024-11-07 11:25:45,259 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 50 predicate places. [2024-11-07 11:25:45,259 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 68 transitions, 612 flow [2024-11-07 11:25:45,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.944444444444445) internal successors, (125), 18 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 11:25:45,259 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:25:45,259 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:25:45,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-07 11:25:45,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:25:45,461 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:25:45,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:25:45,462 INFO L85 PathProgramCache]: Analyzing trace with hash 843215203, now seen corresponding path program 6 times [2024-11-07 11:25:45,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:25:45,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7804327] [2024-11-07 11:25:45,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:45,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:25:45,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:45,972 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 11:25:45,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:25:45,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7804327] [2024-11-07 11:25:45,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7804327] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:25:45,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746507462] [2024-11-07 11:25:45,974 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-07 11:25:45,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:25:45,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:25:45,977 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 11:25:45,978 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 11:25:46,061 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-07 11:25:46,061 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:25:46,063 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-07 11:25:46,069 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:25:46,239 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 77 treesize of output 49 [2024-11-07 11:25:46,301 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:25:46,301 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:25:46,490 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:25:46,491 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 200 treesize of output 144 [2024-11-07 11:25:46,814 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:25:46,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746507462] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:25:46,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:25:46,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 18 [2024-11-07 11:25:46,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912429384] [2024-11-07 11:25:46,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:25:46,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-07 11:25:46,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:25:46,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-07 11:25:46,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-11-07 11:25:46,815 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 20 [2024-11-07 11:25:46,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 68 transitions, 612 flow. Second operand has 18 states, 18 states have (on average 7.111111111111111) internal successors, (128), 18 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 11:25:46,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:25:46,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 20 [2024-11-07 11:25:46,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:25:47,302 INFO L124 PetriNetUnfolderBase]: 166/303 cut-off events. [2024-11-07 11:25:47,303 INFO L125 PetriNetUnfolderBase]: For 1601/1601 co-relation queries the response was YES. [2024-11-07 11:25:47,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1737 conditions, 303 events. 166/303 cut-off events. For 1601/1601 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1060 event pairs, 0 based on Foata normal form. 2/297 useless extension candidates. Maximal degree in co-relation 1704. Up to 119 conditions per place. [2024-11-07 11:25:47,308 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 55 selfloop transitions, 47 changer transitions 7/112 dead transitions. [2024-11-07 11:25:47,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 112 transitions, 1162 flow [2024-11-07 11:25:47,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-07 11:25:47,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-07 11:25:47,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 156 transitions. [2024-11-07 11:25:47,311 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4875 [2024-11-07 11:25:47,311 INFO L175 Difference]: Start difference. First operand has 71 places, 68 transitions, 612 flow. Second operand 16 states and 156 transitions. [2024-11-07 11:25:47,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 112 transitions, 1162 flow [2024-11-07 11:25:47,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 112 transitions, 919 flow, removed 101 selfloop flow, removed 8 redundant places. [2024-11-07 11:25:47,322 INFO L231 Difference]: Finished difference. Result has 81 places, 82 transitions, 729 flow [2024-11-07 11:25:47,322 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=729, PETRI_PLACES=81, PETRI_TRANSITIONS=82} [2024-11-07 11:25:47,323 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 60 predicate places. [2024-11-07 11:25:47,323 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 82 transitions, 729 flow [2024-11-07 11:25:47,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.111111111111111) internal successors, (128), 18 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 11:25:47,323 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:25:47,323 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:25:47,341 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 11:25:47,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:25:47,524 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:25:47,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:25:47,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1536158522, now seen corresponding path program 7 times [2024-11-07 11:25:47,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:25:47,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925071287] [2024-11-07 11:25:47,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:47,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:25:47,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:47,610 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:25:47,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:25:47,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925071287] [2024-11-07 11:25:47,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925071287] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:25:47,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803434869] [2024-11-07 11:25:47,611 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-07 11:25:47,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:25:47,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:25:47,613 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 11:25:47,616 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 11:25:47,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:47,696 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-07 11:25:47,698 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:25:47,761 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:25:47,761 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:25:47,805 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:25:47,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803434869] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:25:47,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:25:47,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-07 11:25:47,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081238615] [2024-11-07 11:25:47,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:25:47,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 11:25:47,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:25:47,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 11:25:47,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-07 11:25:47,806 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 20 [2024-11-07 11:25:47,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 82 transitions, 729 flow. Second operand has 12 states, 12 states have (on average 7.5) internal successors, (90), 12 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 11:25:47,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:25:47,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 20 [2024-11-07 11:25:47,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:25:48,005 INFO L124 PetriNetUnfolderBase]: 232/463 cut-off events. [2024-11-07 11:25:48,006 INFO L125 PetriNetUnfolderBase]: For 2745/2745 co-relation queries the response was YES. [2024-11-07 11:25:48,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2590 conditions, 463 events. 232/463 cut-off events. For 2745/2745 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2089 event pairs, 60 based on Foata normal form. 35/491 useless extension candidates. Maximal degree in co-relation 2536. Up to 174 conditions per place. [2024-11-07 11:25:48,011 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 102 selfloop transitions, 17 changer transitions 4/126 dead transitions. [2024-11-07 11:25:48,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 126 transitions, 1473 flow [2024-11-07 11:25:48,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 11:25:48,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 11:25:48,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-11-07 11:25:48,013 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-11-07 11:25:48,013 INFO L175 Difference]: Start difference. First operand has 81 places, 82 transitions, 729 flow. Second operand 7 states and 72 transitions. [2024-11-07 11:25:48,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 126 transitions, 1473 flow [2024-11-07 11:25:48,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 126 transitions, 1218 flow, removed 108 selfloop flow, removed 8 redundant places. [2024-11-07 11:25:48,027 INFO L231 Difference]: Finished difference. Result has 78 places, 84 transitions, 762 flow [2024-11-07 11:25:48,028 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=762, PETRI_PLACES=78, PETRI_TRANSITIONS=84} [2024-11-07 11:25:48,028 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 57 predicate places. [2024-11-07 11:25:48,029 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 84 transitions, 762 flow [2024-11-07 11:25:48,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.5) internal successors, (90), 12 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 11:25:48,030 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:25:48,030 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:25:48,048 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 11:25:48,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:25:48,231 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:25:48,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:25:48,232 INFO L85 PathProgramCache]: Analyzing trace with hash 594512771, now seen corresponding path program 8 times [2024-11-07 11:25:48,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:25:48,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341780985] [2024-11-07 11:25:48,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:48,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:25:48,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:48,319 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:25:48,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:25:48,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341780985] [2024-11-07 11:25:48,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341780985] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:25:48,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622865968] [2024-11-07 11:25:48,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:25:48,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:25:48,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:25:48,323 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 11:25:48,324 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 11:25:48,409 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:25:48,409 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:25:48,411 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-07 11:25:48,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:25:48,482 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:25:48,482 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:25:48,534 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:25:48,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622865968] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:25:48,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:25:48,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6] total 14 [2024-11-07 11:25:48,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245526393] [2024-11-07 11:25:48,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:25:48,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-07 11:25:48,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:25:48,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-07 11:25:48,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-11-07 11:25:48,536 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 20 [2024-11-07 11:25:48,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 84 transitions, 762 flow. Second operand has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 14 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 11:25:48,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:25:48,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 20 [2024-11-07 11:25:48,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:25:48,814 INFO L124 PetriNetUnfolderBase]: 173/342 cut-off events. [2024-11-07 11:25:48,814 INFO L125 PetriNetUnfolderBase]: For 1377/1377 co-relation queries the response was YES. [2024-11-07 11:25:48,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1794 conditions, 342 events. 173/342 cut-off events. For 1377/1377 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1353 event pairs, 5 based on Foata normal form. 26/364 useless extension candidates. Maximal degree in co-relation 1678. Up to 122 conditions per place. [2024-11-07 11:25:48,818 INFO L140 encePairwiseOnDemand]: 13/20 looper letters, 69 selfloop transitions, 33 changer transitions 22/127 dead transitions. [2024-11-07 11:25:48,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 127 transitions, 1247 flow [2024-11-07 11:25:48,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-07 11:25:48,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-07 11:25:48,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 139 transitions. [2024-11-07 11:25:48,820 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49642857142857144 [2024-11-07 11:25:48,820 INFO L175 Difference]: Start difference. First operand has 78 places, 84 transitions, 762 flow. Second operand 14 states and 139 transitions. [2024-11-07 11:25:48,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 127 transitions, 1247 flow [2024-11-07 11:25:48,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 127 transitions, 1220 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-11-07 11:25:48,830 INFO L231 Difference]: Finished difference. Result has 93 places, 79 transitions, 784 flow [2024-11-07 11:25:48,830 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=784, PETRI_PLACES=93, PETRI_TRANSITIONS=79} [2024-11-07 11:25:48,830 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 72 predicate places. [2024-11-07 11:25:48,830 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 79 transitions, 784 flow [2024-11-07 11:25:48,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 14 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 11:25:48,831 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:25:48,831 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:25:48,844 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-07 11:25:49,031 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,SelfDestructingSolverStorable12 [2024-11-07 11:25:49,032 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:25:49,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:25:49,032 INFO L85 PathProgramCache]: Analyzing trace with hash -871290198, now seen corresponding path program 9 times [2024-11-07 11:25:49,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:25:49,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494891734] [2024-11-07 11:25:49,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:49,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:25:49,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:49,128 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:25:49,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:25:49,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494891734] [2024-11-07 11:25:49,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494891734] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:25:49,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83318785] [2024-11-07 11:25:49,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:25:49,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:25:49,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:25:49,131 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 11:25:49,133 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 11:25:49,218 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-07 11:25:49,218 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:25:49,219 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-07 11:25:49,220 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:25:49,306 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:25:49,306 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:25:49,375 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:25:49,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83318785] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:25:49,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:25:49,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-11-07 11:25:49,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840964593] [2024-11-07 11:25:49,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:25:49,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-07 11:25:49,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:25:49,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-07 11:25:49,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-11-07 11:25:49,377 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 20 [2024-11-07 11:25:49,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 79 transitions, 784 flow. Second operand has 16 states, 16 states have (on average 7.3125) internal successors, (117), 16 states have internal predecessors, (117), 0 states have call successors, (0), 0 states 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 11:25:49,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:25:49,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 20 [2024-11-07 11:25:49,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:25:49,723 INFO L124 PetriNetUnfolderBase]: 240/421 cut-off events. [2024-11-07 11:25:49,723 INFO L125 PetriNetUnfolderBase]: For 3006/3006 co-relation queries the response was YES. [2024-11-07 11:25:49,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2631 conditions, 421 events. 240/421 cut-off events. For 3006/3006 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1577 event pairs, 5 based on Foata normal form. 49/468 useless extension candidates. Maximal degree in co-relation 2576. Up to 153 conditions per place. [2024-11-07 11:25:49,728 INFO L140 encePairwiseOnDemand]: 13/20 looper letters, 87 selfloop transitions, 53 changer transitions 0/143 dead transitions. [2024-11-07 11:25:49,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 143 transitions, 1674 flow [2024-11-07 11:25:49,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-07 11:25:49,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-07 11:25:49,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 158 transitions. [2024-11-07 11:25:49,729 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4647058823529412 [2024-11-07 11:25:49,729 INFO L175 Difference]: Start difference. First operand has 93 places, 79 transitions, 784 flow. Second operand 17 states and 158 transitions. [2024-11-07 11:25:49,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 143 transitions, 1674 flow [2024-11-07 11:25:49,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 143 transitions, 1451 flow, removed 64 selfloop flow, removed 15 redundant places. [2024-11-07 11:25:49,741 INFO L231 Difference]: Finished difference. Result has 94 places, 108 transitions, 1224 flow [2024-11-07 11:25:49,741 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1224, PETRI_PLACES=94, PETRI_TRANSITIONS=108} [2024-11-07 11:25:49,742 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 73 predicate places. [2024-11-07 11:25:49,742 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 108 transitions, 1224 flow [2024-11-07 11:25:49,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.3125) internal successors, (117), 16 states have internal predecessors, (117), 0 states have call successors, (0), 0 states 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 11:25:49,742 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:25:49,742 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:25:49,759 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 11:25:49,943 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,SelfDestructingSolverStorable13 [2024-11-07 11:25:49,943 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:25:49,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:25:49,944 INFO L85 PathProgramCache]: Analyzing trace with hash 2098220837, now seen corresponding path program 10 times [2024-11-07 11:25:49,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:25:49,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137412750] [2024-11-07 11:25:49,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:49,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:25:49,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:50,038 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:25:50,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:25:50,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137412750] [2024-11-07 11:25:50,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137412750] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:25:50,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947825042] [2024-11-07 11:25:50,039 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 11:25:50,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:25:50,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:25:50,041 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 11:25:50,043 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 11:25:50,124 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 11:25:50,124 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:25:50,125 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-07 11:25:50,127 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:25:50,191 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:25:50,191 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:25:50,249 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:25:50,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947825042] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:25:50,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:25:50,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-07 11:25:50,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199030022] [2024-11-07 11:25:50,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:25:50,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-07 11:25:50,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:25:50,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-07 11:25:50,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-07 11:25:50,252 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 20 [2024-11-07 11:25:50,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 108 transitions, 1224 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:25:50,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:25:50,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 20 [2024-11-07 11:25:50,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:25:50,396 INFO L124 PetriNetUnfolderBase]: 217/388 cut-off events. [2024-11-07 11:25:50,396 INFO L125 PetriNetUnfolderBase]: For 3573/3573 co-relation queries the response was YES. [2024-11-07 11:25:50,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2505 conditions, 388 events. 217/388 cut-off events. For 3573/3573 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1437 event pairs, 21 based on Foata normal form. 36/418 useless extension candidates. Maximal degree in co-relation 2431. Up to 201 conditions per place. [2024-11-07 11:25:50,401 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 68 selfloop transitions, 34 changer transitions 0/105 dead transitions. [2024-11-07 11:25:50,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 105 transitions, 1353 flow [2024-11-07 11:25:50,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 11:25:50,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-07 11:25:50,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 67 transitions. [2024-11-07 11:25:50,402 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-11-07 11:25:50,402 INFO L175 Difference]: Start difference. First operand has 94 places, 108 transitions, 1224 flow. Second operand 8 states and 67 transitions. [2024-11-07 11:25:50,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 105 transitions, 1353 flow [2024-11-07 11:25:50,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 105 transitions, 1201 flow, removed 60 selfloop flow, removed 10 redundant places. [2024-11-07 11:25:50,416 INFO L231 Difference]: Finished difference. Result has 88 places, 95 transitions, 1014 flow [2024-11-07 11:25:50,416 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1014, PETRI_PLACES=88, PETRI_TRANSITIONS=95} [2024-11-07 11:25:50,417 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 67 predicate places. [2024-11-07 11:25:50,417 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 95 transitions, 1014 flow [2024-11-07 11:25:50,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:25:50,417 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:25:50,418 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:25:50,434 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 11:25:50,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:25:50,619 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:25:50,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:25:50,620 INFO L85 PathProgramCache]: Analyzing trace with hash -353031292, now seen corresponding path program 11 times [2024-11-07 11:25:50,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:25:50,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427903119] [2024-11-07 11:25:50,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:50,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:25:50,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:51,759 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:25:51,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:25:51,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427903119] [2024-11-07 11:25:51,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427903119] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:25:51,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496307311] [2024-11-07 11:25:51,760 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 11:25:51,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:25:51,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:25:51,762 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 11:25:51,764 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 11:25:51,854 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:25:51,855 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:25:51,857 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-07 11:25:51,859 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:25:51,888 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 19 treesize of output 1 [2024-11-07 11:25:52,474 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:25:52,475 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 214 treesize of output 142 [2024-11-07 11:25:52,589 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:25:52,589 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:25:56,021 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:25:56,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496307311] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:25:56,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:25:56,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 26 [2024-11-07 11:25:56,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539047134] [2024-11-07 11:25:56,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:25:56,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-07 11:25:56,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:25:56,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-07 11:25:56,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2024-11-07 11:25:56,023 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 20 [2024-11-07 11:25:56,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 95 transitions, 1014 flow. Second operand has 26 states, 26 states have (on average 6.769230769230769) internal successors, (176), 26 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 11:25:56,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:25:56,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 20 [2024-11-07 11:25:56,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:25:57,723 INFO L124 PetriNetUnfolderBase]: 267/479 cut-off events. [2024-11-07 11:25:57,724 INFO L125 PetriNetUnfolderBase]: For 3564/3564 co-relation queries the response was YES. [2024-11-07 11:25:57,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3164 conditions, 479 events. 267/479 cut-off events. For 3564/3564 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1925 event pairs, 5 based on Foata normal form. 1/476 useless extension candidates. Maximal degree in co-relation 3115. Up to 321 conditions per place. [2024-11-07 11:25:57,731 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 96 selfloop transitions, 51 changer transitions 4/154 dead transitions. [2024-11-07 11:25:57,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 154 transitions, 1761 flow [2024-11-07 11:25:57,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-07 11:25:57,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-07 11:25:57,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 179 transitions. [2024-11-07 11:25:57,733 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4710526315789474 [2024-11-07 11:25:57,733 INFO L175 Difference]: Start difference. First operand has 88 places, 95 transitions, 1014 flow. Second operand 19 states and 179 transitions. [2024-11-07 11:25:57,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 154 transitions, 1761 flow [2024-11-07 11:25:57,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 154 transitions, 1679 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-11-07 11:25:57,751 INFO L231 Difference]: Finished difference. Result has 106 places, 116 transitions, 1433 flow [2024-11-07 11:25:57,752 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=954, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1433, PETRI_PLACES=106, PETRI_TRANSITIONS=116} [2024-11-07 11:25:57,753 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 85 predicate places. [2024-11-07 11:25:57,753 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 116 transitions, 1433 flow [2024-11-07 11:25:57,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.769230769230769) internal successors, (176), 26 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 11:25:57,753 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:25:57,754 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:25:57,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-07 11:25:57,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:25:57,955 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:25:57,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:25:57,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1582956378, now seen corresponding path program 12 times [2024-11-07 11:25:57,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:25:57,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145638447] [2024-11-07 11:25:57,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:57,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:25:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:26:11,292 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:26:11,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:26:11,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145638447] [2024-11-07 11:26:11,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145638447] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:26:11,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354043656] [2024-11-07 11:26:11,293 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-07 11:26:11,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:26:11,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:26:11,296 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 11:26:11,298 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 11:26:11,389 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-07 11:26:11,390 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:26:11,391 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-07 11:26:11,394 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:26:11,437 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 15 treesize of output 1 [2024-11-07 11:26:12,345 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:26:12,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 263 treesize of output 257 [2024-11-07 11:26:13,707 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:26:13,707 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:26:20,708 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 62 treesize of output 54 [2024-11-07 11:26:20,723 INFO L349 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2024-11-07 11:26:20,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 96 treesize of output 83 [2024-11-07 11:26:20,761 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 193 treesize of output 171 [2024-11-07 11:26:20,768 INFO L349 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2024-11-07 11:26:20,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 324 treesize of output 1 [2024-11-07 11:26:20,771 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 192 treesize of output 168 [2024-11-07 11:26:20,781 INFO L349 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2024-11-07 11:26:20,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 360 treesize of output 1 [2024-11-07 11:26:20,784 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 98 treesize of output 86 [2024-11-07 11:26:20,789 INFO L349 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2024-11-07 11:26:20,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 168 treesize of output 1 [2024-11-07 11:26:20,792 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 244 treesize of output 216 [2024-11-07 11:26:20,802 INFO L349 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2024-11-07 11:26:20,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 422 treesize of output 1 [2024-11-07 11:26:20,864 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:26:20,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354043656] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:26:20,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:26:20,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2024-11-07 11:26:20,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618879240] [2024-11-07 11:26:20,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:26:20,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-07 11:26:20,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:26:20,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-07 11:26:20,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=745, Unknown=0, NotChecked=0, Total=870 [2024-11-07 11:26:20,866 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 20 [2024-11-07 11:26:20,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 116 transitions, 1433 flow. Second operand has 30 states, 30 states have (on average 6.5) internal successors, (195), 30 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:26:20,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:26:20,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 20 [2024-11-07 11:26:20,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:26:23,433 INFO L124 PetriNetUnfolderBase]: 295/531 cut-off events. [2024-11-07 11:26:23,434 INFO L125 PetriNetUnfolderBase]: For 4063/4063 co-relation queries the response was YES. [2024-11-07 11:26:23,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3722 conditions, 531 events. 295/531 cut-off events. For 4063/4063 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2236 event pairs, 7 based on Foata normal form. 1/528 useless extension candidates. Maximal degree in co-relation 3668. Up to 392 conditions per place. [2024-11-07 11:26:23,439 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 100 selfloop transitions, 60 changer transitions 4/167 dead transitions. [2024-11-07 11:26:23,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 167 transitions, 2113 flow [2024-11-07 11:26:23,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-07 11:26:23,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-07 11:26:23,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 177 transitions. [2024-11-07 11:26:23,440 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4425 [2024-11-07 11:26:23,440 INFO L175 Difference]: Start difference. First operand has 106 places, 116 transitions, 1433 flow. Second operand 20 states and 177 transitions. [2024-11-07 11:26:23,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 167 transitions, 2113 flow [2024-11-07 11:26:23,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 167 transitions, 1914 flow, removed 74 selfloop flow, removed 11 redundant places. [2024-11-07 11:26:23,462 INFO L231 Difference]: Finished difference. Result has 120 places, 135 transitions, 1678 flow [2024-11-07 11:26:23,462 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1240, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1678, PETRI_PLACES=120, PETRI_TRANSITIONS=135} [2024-11-07 11:26:23,465 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 99 predicate places. [2024-11-07 11:26:23,465 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 135 transitions, 1678 flow [2024-11-07 11:26:23,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.5) internal successors, (195), 30 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:26:23,466 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:26:23,466 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:26:23,485 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 11:26:23,667 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,SelfDestructingSolverStorable16 [2024-11-07 11:26:23,667 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:26:23,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:26:23,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1812091346, now seen corresponding path program 13 times [2024-11-07 11:26:23,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:26:23,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879222958] [2024-11-07 11:26:23,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:26:23,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:26:23,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:26:24,916 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:26:24,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:26:24,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879222958] [2024-11-07 11:26:24,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879222958] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:26:24,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005669018] [2024-11-07 11:26:24,916 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-07 11:26:24,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:26:24,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:26:24,918 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 11:26:24,919 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 11:26:25,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:26:25,004 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-07 11:26:25,006 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:26:25,459 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:26:25,459 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 223 treesize of output 145 [2024-11-07 11:26:25,614 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:26:25,614 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:26:26,569 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:26:26,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 966 treesize of output 426 [2024-11-07 11:26:34,592 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:26:34,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005669018] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:26:34,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:26:34,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 27 [2024-11-07 11:26:34,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025286927] [2024-11-07 11:26:34,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:26:34,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-07 11:26:34,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:26:34,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-07 11:26:34,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702 [2024-11-07 11:26:34,594 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 20 [2024-11-07 11:26:34,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 135 transitions, 1678 flow. Second operand has 27 states, 27 states have (on average 6.62962962962963) internal successors, (179), 27 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 11:26:34,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:26:34,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 20 [2024-11-07 11:26:34,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:26:35,770 INFO L124 PetriNetUnfolderBase]: 347/609 cut-off events. [2024-11-07 11:26:35,770 INFO L125 PetriNetUnfolderBase]: For 5919/5919 co-relation queries the response was YES. [2024-11-07 11:26:35,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4440 conditions, 609 events. 347/609 cut-off events. For 5919/5919 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2591 event pairs, 7 based on Foata normal form. 1/606 useless extension candidates. Maximal degree in co-relation 4390. Up to 411 conditions per place. [2024-11-07 11:26:35,778 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 99 selfloop transitions, 95 changer transitions 5/202 dead transitions. [2024-11-07 11:26:35,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 202 transitions, 2737 flow [2024-11-07 11:26:35,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-07 11:26:35,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-07 11:26:35,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 241 transitions. [2024-11-07 11:26:35,779 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4634615384615385 [2024-11-07 11:26:35,779 INFO L175 Difference]: Start difference. First operand has 120 places, 135 transitions, 1678 flow. Second operand 26 states and 241 transitions. [2024-11-07 11:26:35,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 202 transitions, 2737 flow [2024-11-07 11:26:35,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 202 transitions, 2594 flow, removed 47 selfloop flow, removed 12 redundant places. [2024-11-07 11:26:35,806 INFO L231 Difference]: Finished difference. Result has 137 places, 161 transitions, 2304 flow [2024-11-07 11:26:35,806 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1535, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2304, PETRI_PLACES=137, PETRI_TRANSITIONS=161} [2024-11-07 11:26:35,807 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 116 predicate places. [2024-11-07 11:26:35,807 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 161 transitions, 2304 flow [2024-11-07 11:26:35,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 6.62962962962963) internal successors, (179), 27 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 11:26:35,808 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:26:35,808 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:26:35,826 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 11:26:36,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-07 11:26:36,009 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:26:36,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:26:36,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1610660504, now seen corresponding path program 14 times [2024-11-07 11:26:36,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:26:36,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608438515] [2024-11-07 11:26:36,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:26:36,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:26:36,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:26:37,294 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:26:37,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:26:37,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608438515] [2024-11-07 11:26:37,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608438515] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:26:37,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605805158] [2024-11-07 11:26:37,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:26:37,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:26:37,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:26:37,297 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 11:26:37,298 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 11:26:37,380 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:26:37,380 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:26:37,382 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-07 11:26:37,384 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:26:37,419 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 15 treesize of output 1 [2024-11-07 11:26:37,910 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:26:37,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 201 treesize of output 145 [2024-11-07 11:26:38,072 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:26:38,073 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:26:42,490 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:26:42,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605805158] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:26:42,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:26:42,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 25 [2024-11-07 11:26:42,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124581976] [2024-11-07 11:26:42,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:26:42,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-07 11:26:42,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:26:42,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-07 11:26:42,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2024-11-07 11:26:42,491 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 20 [2024-11-07 11:26:42,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 161 transitions, 2304 flow. Second operand has 25 states, 25 states have (on average 6.68) internal successors, (167), 25 states have internal predecessors, (167), 0 states have call successors, (0), 0 states 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 11:26:42,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:26:42,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 20 [2024-11-07 11:26:42,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:26:46,938 INFO L124 PetriNetUnfolderBase]: 447/762 cut-off events. [2024-11-07 11:26:46,938 INFO L125 PetriNetUnfolderBase]: For 8228/8228 co-relation queries the response was YES. [2024-11-07 11:26:46,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6096 conditions, 762 events. 447/762 cut-off events. For 8228/8228 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3298 event pairs, 11 based on Foata normal form. 1/761 useless extension candidates. Maximal degree in co-relation 6038. Up to 492 conditions per place. [2024-11-07 11:26:46,951 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 137 selfloop transitions, 121 changer transitions 4/265 dead transitions. [2024-11-07 11:26:46,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 265 transitions, 4004 flow [2024-11-07 11:26:46,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-07 11:26:46,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-07 11:26:46,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 282 transitions. [2024-11-07 11:26:46,955 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47 [2024-11-07 11:26:46,955 INFO L175 Difference]: Start difference. First operand has 137 places, 161 transitions, 2304 flow. Second operand 30 states and 282 transitions. [2024-11-07 11:26:46,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 265 transitions, 4004 flow [2024-11-07 11:26:46,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 265 transitions, 3386 flow, removed 264 selfloop flow, removed 15 redundant places. [2024-11-07 11:26:46,981 INFO L231 Difference]: Finished difference. Result has 155 places, 215 transitions, 3091 flow [2024-11-07 11:26:46,981 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1851, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=3091, PETRI_PLACES=155, PETRI_TRANSITIONS=215} [2024-11-07 11:26:46,982 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 134 predicate places. [2024-11-07 11:26:46,982 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 215 transitions, 3091 flow [2024-11-07 11:26:46,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.68) internal successors, (167), 25 states have internal predecessors, (167), 0 states have call successors, (0), 0 states 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 11:26:46,982 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:26:46,982 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:26:47,000 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 11:26:47,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:26:47,183 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:26:47,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:26:47,183 INFO L85 PathProgramCache]: Analyzing trace with hash 2104775722, now seen corresponding path program 15 times [2024-11-07 11:26:47,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:26:47,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798073948] [2024-11-07 11:26:47,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:26:47,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:26:47,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat