./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/bench-exp3x3-opt.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/bench-exp3x3-opt.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', 'df63a9317cd159d15f0c87211084d5e90c66afa781f3187352107d14a3f61024'] 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/bench-exp3x3-opt.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 df63a9317cd159d15f0c87211084d5e90c66afa781f3187352107d14a3f61024 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 11:21:11,794 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 11:21:11,895 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-07 11:21:11,902 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 11:21:11,902 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 11:21:11,930 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 11:21:11,933 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 11:21:11,933 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 11:21:11,934 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 11:21:11,934 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 11:21:11,934 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 11:21:11,934 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 11:21:11,936 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 11:21:11,936 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 11:21:11,936 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 11:21:11,936 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 11:21:11,936 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 11:21:11,936 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 11:21:11,936 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 11:21:11,936 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 11:21:11,936 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 11:21:11,936 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 11:21:11,937 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 11:21:11,937 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 11:21:11,937 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 11:21:11,937 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 11:21:11,937 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 11:21:11,937 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 11:21:11,937 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 11:21:11,937 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 11:21:11,937 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 11:21:11,937 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 11:21:11,937 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:21:11,937 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 11:21:11,937 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 11:21:11,937 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 11:21:11,938 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 11:21:11,938 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 11:21:11,938 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 11:21:11,938 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 11:21:11,938 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 11:21:11,938 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 11:21:11,938 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 -> df63a9317cd159d15f0c87211084d5e90c66afa781f3187352107d14a3f61024 [2024-11-07 11:21:12,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 11:21:12,214 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 11:21:12,216 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 11:21:12,217 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 11:21:12,217 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 11:21:12,219 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c [2024-11-07 11:21:13,521 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 11:21:13,726 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 11:21:13,727 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c [2024-11-07 11:21:13,732 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b8c002d15/adfac17ed21a42e9836ba6377cfc6711/FLAG1a0c4b7e5 [2024-11-07 11:21:13,750 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b8c002d15/adfac17ed21a42e9836ba6377cfc6711 [2024-11-07 11:21:13,752 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 11:21:13,755 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 11:21:13,757 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 11:21:13,757 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 11:21:13,761 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 11:21:13,762 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:21:13" (1/1) ... [2024-11-07 11:21:13,763 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ea3c2e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:21:13, skipping insertion in model container [2024-11-07 11:21:13,763 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:21:13" (1/1) ... [2024-11-07 11:21:13,780 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 11:21:13,950 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/bench-exp3x3-opt.wvr.c[2904,2917] [2024-11-07 11:21:13,954 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:21:13,967 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 11:21:13,994 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/bench-exp3x3-opt.wvr.c[2904,2917] [2024-11-07 11:21:13,998 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:21:14,014 INFO L204 MainTranslator]: Completed translation [2024-11-07 11:21:14,015 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:21:14 WrapperNode [2024-11-07 11:21:14,016 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 11:21:14,017 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 11:21:14,018 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 11:21:14,018 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 11:21:14,024 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:21:14" (1/1) ... [2024-11-07 11:21:14,033 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:21:14" (1/1) ... [2024-11-07 11:21:14,063 INFO L138 Inliner]: procedures = 24, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 95 [2024-11-07 11:21:14,064 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 11:21:14,065 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 11:21:14,065 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 11:21:14,065 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 11:21:14,075 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:21:14" (1/1) ... [2024-11-07 11:21:14,075 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:21:14" (1/1) ... [2024-11-07 11:21:14,077 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:21:14" (1/1) ... [2024-11-07 11:21:14,096 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-07 11:21:14,097 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:21:14" (1/1) ... [2024-11-07 11:21:14,098 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:21:14" (1/1) ... [2024-11-07 11:21:14,103 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:21:14" (1/1) ... [2024-11-07 11:21:14,113 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:21:14" (1/1) ... [2024-11-07 11:21:14,117 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:21:14" (1/1) ... [2024-11-07 11:21:14,117 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:21:14" (1/1) ... [2024-11-07 11:21:14,127 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 11:21:14,128 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 11:21:14,130 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 11:21:14,130 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 11:21:14,131 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:21:14" (1/1) ... [2024-11-07 11:21:14,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:21:14,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:21:14,164 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 11:21:14,171 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 11:21:14,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 11:21:14,191 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-07 11:21:14,191 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-07 11:21:14,191 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-07 11:21:14,192 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-07 11:21:14,192 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-07 11:21:14,192 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-07 11:21:14,192 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-07 11:21:14,192 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-07 11:21:14,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 11:21:14,193 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-11-07 11:21:14,193 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-11-07 11:21:14,193 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2024-11-07 11:21:14,194 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2024-11-07 11:21:14,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 11:21:14,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 11:21:14,195 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 11:21:14,293 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 11:21:14,296 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 11:21:14,530 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 11:21:14,532 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 11:21:14,770 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 11:21:14,771 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-07 11:21:14,772 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:21:14 BoogieIcfgContainer [2024-11-07 11:21:14,772 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 11:21:14,774 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 11:21:14,775 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 11:21:14,779 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 11:21:14,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:21:13" (1/3) ... [2024-11-07 11:21:14,781 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69173668 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:21:14, skipping insertion in model container [2024-11-07 11:21:14,781 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:21:14" (2/3) ... [2024-11-07 11:21:14,781 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69173668 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:21:14, skipping insertion in model container [2024-11-07 11:21:14,781 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:21:14" (3/3) ... [2024-11-07 11:21:14,783 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp3x3-opt.wvr.c [2024-11-07 11:21:14,797 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 11:21:14,797 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-07 11:21:14,798 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 11:21:14,882 INFO L143 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2024-11-07 11:21:14,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 46 transitions, 134 flow [2024-11-07 11:21:14,959 INFO L124 PetriNetUnfolderBase]: 6/40 cut-off events. [2024-11-07 11:21:14,961 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-07 11:21:14,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 40 events. 6/40 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-11-07 11:21:14,967 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 46 transitions, 134 flow [2024-11-07 11:21:14,970 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 39 transitions, 114 flow [2024-11-07 11:21:14,982 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 11:21:14,995 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;@4865043f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 11:21:14,995 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-07 11:21:15,014 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 11:21:15,015 INFO L124 PetriNetUnfolderBase]: 6/38 cut-off events. [2024-11-07 11:21:15,015 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-07 11:21:15,015 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:15,016 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:15,017 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-07 11:21:15,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:15,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1273891109, now seen corresponding path program 1 times [2024-11-07 11:21:15,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:15,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458733728] [2024-11-07 11:21:15,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:15,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:15,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:15,551 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 11:21:15,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:15,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458733728] [2024-11-07 11:21:15,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458733728] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:21:15,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:21:15,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 11:21:15,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358698467] [2024-11-07 11:21:15,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:21:15,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 11:21:15,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:15,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 11:21:15,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 11:21:15,591 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-07 11:21:15,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 11:21:15,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:15,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-07 11:21:15,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:17,792 INFO L124 PetriNetUnfolderBase]: 22467/26032 cut-off events. [2024-11-07 11:21:17,793 INFO L125 PetriNetUnfolderBase]: For 1291/1291 co-relation queries the response was YES. [2024-11-07 11:21:17,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53577 conditions, 26032 events. 22467/26032 cut-off events. For 1291/1291 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 90072 event pairs, 3392 based on Foata normal form. 1/14205 useless extension candidates. Maximal degree in co-relation 44055. Up to 18721 conditions per place. [2024-11-07 11:21:17,962 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 53 selfloop transitions, 3 changer transitions 5/68 dead transitions. [2024-11-07 11:21:17,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 68 transitions, 327 flow [2024-11-07 11:21:17,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 11:21:17,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 11:21:17,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-11-07 11:21:17,973 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7318840579710145 [2024-11-07 11:21:17,975 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 114 flow. Second operand 3 states and 101 transitions. [2024-11-07 11:21:17,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 68 transitions, 327 flow [2024-11-07 11:21:18,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 68 transitions, 281 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-11-07 11:21:18,078 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 109 flow [2024-11-07 11:21:18,081 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=43, PETRI_TRANSITIONS=41} [2024-11-07 11:21:18,085 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -9 predicate places. [2024-11-07 11:21:18,086 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 109 flow [2024-11-07 11:21:18,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 11:21:18,086 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:18,086 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:18,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 11:21:18,087 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-07 11:21:18,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:18,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1632091046, now seen corresponding path program 1 times [2024-11-07 11:21:18,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:18,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463980763] [2024-11-07 11:21:18,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:18,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:18,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:18,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:21:18,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:18,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463980763] [2024-11-07 11:21:18,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463980763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:21:18,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:21:18,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 11:21:18,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909102274] [2024-11-07 11:21:18,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:21:18,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 11:21:18,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:18,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 11:21:18,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 11:21:18,347 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-07 11:21:18,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 11:21:18,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:18,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-07 11:21:18,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:20,324 INFO L124 PetriNetUnfolderBase]: 28887/33823 cut-off events. [2024-11-07 11:21:20,325 INFO L125 PetriNetUnfolderBase]: For 5242/5242 co-relation queries the response was YES. [2024-11-07 11:21:20,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73953 conditions, 33823 events. 28887/33823 cut-off events. For 5242/5242 co-relation queries the response was YES. Maximal size of possible extension queue 1207. Compared 126061 event pairs, 5370 based on Foata normal form. 1/23088 useless extension candidates. Maximal degree in co-relation 30558. Up to 22060 conditions per place. [2024-11-07 11:21:20,468 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 53 selfloop transitions, 3 changer transitions 1/64 dead transitions. [2024-11-07 11:21:20,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 64 transitions, 286 flow [2024-11-07 11:21:20,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 11:21:20,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 11:21:20,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-11-07 11:21:20,470 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6739130434782609 [2024-11-07 11:21:20,470 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 109 flow. Second operand 3 states and 93 transitions. [2024-11-07 11:21:20,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 64 transitions, 286 flow [2024-11-07 11:21:20,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 64 transitions, 281 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 11:21:20,474 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 125 flow [2024-11-07 11:21:20,474 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=45, PETRI_TRANSITIONS=43} [2024-11-07 11:21:20,474 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -7 predicate places. [2024-11-07 11:21:20,475 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 125 flow [2024-11-07 11:21:20,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 11:21:20,475 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:20,475 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:20,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 11:21:20,475 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-07 11:21:20,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:20,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1847200297, now seen corresponding path program 1 times [2024-11-07 11:21:20,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:20,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602172093] [2024-11-07 11:21:20,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:20,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:20,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:20,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:21:20,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:20,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602172093] [2024-11-07 11:21:20,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602172093] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:21:20,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:21:20,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 11:21:20,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379217169] [2024-11-07 11:21:20,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:21:20,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 11:21:20,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:20,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 11:21:20,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 11:21:20,646 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-07 11:21:20,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 11:21:20,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:20,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-07 11:21:20,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:22,584 INFO L124 PetriNetUnfolderBase]: 36445/42858 cut-off events. [2024-11-07 11:21:22,585 INFO L125 PetriNetUnfolderBase]: For 12374/12374 co-relation queries the response was YES. [2024-11-07 11:21:22,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100240 conditions, 42858 events. 36445/42858 cut-off events. For 12374/12374 co-relation queries the response was YES. Maximal size of possible extension queue 1536. Compared 168991 event pairs, 5856 based on Foata normal form. 1/35380 useless extension candidates. Maximal degree in co-relation 32750. Up to 31148 conditions per place. [2024-11-07 11:21:22,776 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 59 selfloop transitions, 3 changer transitions 3/72 dead transitions. [2024-11-07 11:21:22,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 72 transitions, 340 flow [2024-11-07 11:21:22,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 11:21:22,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 11:21:22,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2024-11-07 11:21:22,778 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7028985507246377 [2024-11-07 11:21:22,778 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 125 flow. Second operand 3 states and 97 transitions. [2024-11-07 11:21:22,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 72 transitions, 340 flow [2024-11-07 11:21:22,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 72 transitions, 335 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 11:21:22,783 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 141 flow [2024-11-07 11:21:22,783 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2024-11-07 11:21:22,784 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -5 predicate places. [2024-11-07 11:21:22,784 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 141 flow [2024-11-07 11:21:22,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 11:21:22,784 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:22,784 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:22,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 11:21:22,785 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-07 11:21:22,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:22,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1539604524, now seen corresponding path program 1 times [2024-11-07 11:21:22,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:22,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636457456] [2024-11-07 11:21:22,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:22,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:22,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:22,912 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:21:22,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:22,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636457456] [2024-11-07 11:21:22,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636457456] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:21:22,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:21:22,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:21:22,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794432313] [2024-11-07 11:21:22,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:21:22,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:21:22,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:22,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:21:22,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:21:22,916 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-07 11:21:22,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 141 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 11:21:22,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:22,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-07 11:21:22,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:25,314 INFO L124 PetriNetUnfolderBase]: 41073/48677 cut-off events. [2024-11-07 11:21:25,315 INFO L125 PetriNetUnfolderBase]: For 18456/18456 co-relation queries the response was YES. [2024-11-07 11:21:25,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122495 conditions, 48677 events. 41073/48677 cut-off events. For 18456/18456 co-relation queries the response was YES. Maximal size of possible extension queue 1782. Compared 205151 event pairs, 6124 based on Foata normal form. 981/49144 useless extension candidates. Maximal degree in co-relation 40746. Up to 22914 conditions per place. [2024-11-07 11:21:25,464 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 106 selfloop transitions, 6 changer transitions 11/130 dead transitions. [2024-11-07 11:21:25,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 130 transitions, 643 flow [2024-11-07 11:21:25,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:21:25,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:21:25,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 175 transitions. [2024-11-07 11:21:25,466 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7608695652173914 [2024-11-07 11:21:25,466 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 141 flow. Second operand 5 states and 175 transitions. [2024-11-07 11:21:25,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 130 transitions, 643 flow [2024-11-07 11:21:25,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 130 transitions, 634 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 11:21:25,474 INFO L231 Difference]: Finished difference. Result has 52 places, 48 transitions, 175 flow [2024-11-07 11:21:25,474 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=175, PETRI_PLACES=52, PETRI_TRANSITIONS=48} [2024-11-07 11:21:25,475 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-11-07 11:21:25,475 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 175 flow [2024-11-07 11:21:25,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 11:21:25,475 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:25,475 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:25,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 11:21:25,475 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-07 11:21:25,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:25,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1576941873, now seen corresponding path program 1 times [2024-11-07 11:21:25,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:25,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757316154] [2024-11-07 11:21:25,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:25,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:25,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:25,606 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:21:25,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:25,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757316154] [2024-11-07 11:21:25,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757316154] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:21:25,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:21:25,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:21:25,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315206036] [2024-11-07 11:21:25,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:21:25,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:21:25,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:25,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:21:25,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:21:25,609 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-07 11:21:25,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 175 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 11:21:25,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:25,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-07 11:21:25,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:28,129 INFO L124 PetriNetUnfolderBase]: 40803/48295 cut-off events. [2024-11-07 11:21:28,130 INFO L125 PetriNetUnfolderBase]: For 30028/30028 co-relation queries the response was YES. [2024-11-07 11:21:28,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132577 conditions, 48295 events. 40803/48295 cut-off events. For 30028/30028 co-relation queries the response was YES. Maximal size of possible extension queue 1743. Compared 202039 event pairs, 973 based on Foata normal form. 562/48727 useless extension candidates. Maximal degree in co-relation 51811. Up to 18355 conditions per place. [2024-11-07 11:21:28,406 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 84 selfloop transitions, 4 changer transitions 35/130 dead transitions. [2024-11-07 11:21:28,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 130 transitions, 679 flow [2024-11-07 11:21:28,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:21:28,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:21:28,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 169 transitions. [2024-11-07 11:21:28,408 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7347826086956522 [2024-11-07 11:21:28,408 INFO L175 Difference]: Start difference. First operand has 52 places, 48 transitions, 175 flow. Second operand 5 states and 169 transitions. [2024-11-07 11:21:28,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 130 transitions, 679 flow [2024-11-07 11:21:28,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 130 transitions, 673 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-07 11:21:28,602 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 183 flow [2024-11-07 11:21:28,602 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=183, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-11-07 11:21:28,603 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 4 predicate places. [2024-11-07 11:21:28,603 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 183 flow [2024-11-07 11:21:28,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 11:21:28,603 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:28,603 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:28,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 11:21:28,604 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-07 11:21:28,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:28,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1386392631, now seen corresponding path program 2 times [2024-11-07 11:21:28,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:28,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608543727] [2024-11-07 11:21:28,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:28,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:28,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:28,731 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:21:28,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:28,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608543727] [2024-11-07 11:21:28,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608543727] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:21:28,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:21:28,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:21:28,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992736580] [2024-11-07 11:21:28,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:21:28,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:21:28,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:28,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:21:28,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:21:28,734 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-07 11:21:28,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 183 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 11:21:28,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:28,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-07 11:21:28,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:30,308 INFO L124 PetriNetUnfolderBase]: 28369/33687 cut-off events. [2024-11-07 11:21:30,309 INFO L125 PetriNetUnfolderBase]: For 38197/38197 co-relation queries the response was YES. [2024-11-07 11:21:30,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100041 conditions, 33687 events. 28369/33687 cut-off events. For 38197/38197 co-relation queries the response was YES. Maximal size of possible extension queue 1210. Compared 135687 event pairs, 3839 based on Foata normal form. 721/33997 useless extension candidates. Maximal degree in co-relation 51731. Up to 16437 conditions per place. [2024-11-07 11:21:30,463 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 112 selfloop transitions, 6 changer transitions 7/132 dead transitions. [2024-11-07 11:21:30,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 132 transitions, 776 flow [2024-11-07 11:21:30,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:21:30,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:21:30,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 165 transitions. [2024-11-07 11:21:30,465 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.717391304347826 [2024-11-07 11:21:30,465 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 183 flow. Second operand 5 states and 165 transitions. [2024-11-07 11:21:30,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 132 transitions, 776 flow [2024-11-07 11:21:30,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 132 transitions, 763 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-07 11:21:30,476 INFO L231 Difference]: Finished difference. Result has 60 places, 51 transitions, 213 flow [2024-11-07 11:21:30,476 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=213, PETRI_PLACES=60, PETRI_TRANSITIONS=51} [2024-11-07 11:21:30,477 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 8 predicate places. [2024-11-07 11:21:30,477 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 51 transitions, 213 flow [2024-11-07 11:21:30,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 11:21:30,477 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:30,477 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:30,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 11:21:30,478 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-07 11:21:30,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:30,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1690910736, now seen corresponding path program 1 times [2024-11-07 11:21:30,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:30,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048063996] [2024-11-07 11:21:30,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:30,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:30,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:30,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:21:30,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:30,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048063996] [2024-11-07 11:21:30,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048063996] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:21:30,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188096587] [2024-11-07 11:21:30,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:30,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:30,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:21:30,750 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 11:21:30,752 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 11:21:30,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:30,854 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-07 11:21:30,858 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:21:30,964 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:21:30,964 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 11:21:30,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188096587] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:21:30,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 11:21:30,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-07 11:21:30,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365122239] [2024-11-07 11:21:30,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:21:30,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:21:30,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:30,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:21:30,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-07 11:21:30,967 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-07 11:21:30,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 51 transitions, 213 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 11:21:30,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:30,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-07 11:21:30,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:32,872 INFO L124 PetriNetUnfolderBase]: 27581/32810 cut-off events. [2024-11-07 11:21:32,873 INFO L125 PetriNetUnfolderBase]: For 37124/37124 co-relation queries the response was YES. [2024-11-07 11:21:32,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107692 conditions, 32810 events. 27581/32810 cut-off events. For 37124/37124 co-relation queries the response was YES. Maximal size of possible extension queue 1186. Compared 134456 event pairs, 1277 based on Foata normal form. 972/33634 useless extension candidates. Maximal degree in co-relation 47549. Up to 24879 conditions per place. [2024-11-07 11:21:33,007 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 93 selfloop transitions, 4 changer transitions 0/104 dead transitions. [2024-11-07 11:21:33,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 104 transitions, 620 flow [2024-11-07 11:21:33,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:21:33,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:21:33,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-11-07 11:21:33,008 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6847826086956522 [2024-11-07 11:21:33,008 INFO L175 Difference]: Start difference. First operand has 60 places, 51 transitions, 213 flow. Second operand 4 states and 126 transitions. [2024-11-07 11:21:33,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 104 transitions, 620 flow [2024-11-07 11:21:33,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 104 transitions, 607 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-07 11:21:33,108 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 226 flow [2024-11-07 11:21:33,108 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=226, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2024-11-07 11:21:33,109 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 11 predicate places. [2024-11-07 11:21:33,109 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 226 flow [2024-11-07 11:21:33,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 11:21:33,109 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:33,109 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:33,122 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 11:21:33,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:33,310 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-07 11:21:33,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:33,311 INFO L85 PathProgramCache]: Analyzing trace with hash 723661435, now seen corresponding path program 1 times [2024-11-07 11:21:33,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:33,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448227678] [2024-11-07 11:21:33,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:33,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:33,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:33,436 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:21:33,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:33,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448227678] [2024-11-07 11:21:33,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448227678] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:21:33,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:21:33,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:21:33,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83903093] [2024-11-07 11:21:33,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:21:33,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:21:33,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:33,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:21:33,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:21:33,439 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-07 11:21:33,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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 11:21:33,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:33,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-07 11:21:33,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:34,969 INFO L124 PetriNetUnfolderBase]: 27237/32465 cut-off events. [2024-11-07 11:21:34,970 INFO L125 PetriNetUnfolderBase]: For 49547/49547 co-relation queries the response was YES. [2024-11-07 11:21:35,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111317 conditions, 32465 events. 27237/32465 cut-off events. For 49547/49547 co-relation queries the response was YES. Maximal size of possible extension queue 1182. Compared 130555 event pairs, 640 based on Foata normal form. 366/32708 useless extension candidates. Maximal degree in co-relation 76500. Up to 12761 conditions per place. [2024-11-07 11:21:35,116 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 92 selfloop transitions, 4 changer transitions 35/138 dead transitions. [2024-11-07 11:21:35,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 138 transitions, 886 flow [2024-11-07 11:21:35,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:21:35,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:21:35,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2024-11-07 11:21:35,117 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-11-07 11:21:35,118 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 226 flow. Second operand 5 states and 161 transitions. [2024-11-07 11:21:35,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 138 transitions, 886 flow [2024-11-07 11:21:35,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 138 transitions, 868 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 11:21:35,276 INFO L231 Difference]: Finished difference. Result has 66 places, 52 transitions, 233 flow [2024-11-07 11:21:35,276 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=233, PETRI_PLACES=66, PETRI_TRANSITIONS=52} [2024-11-07 11:21:35,277 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 14 predicate places. [2024-11-07 11:21:35,277 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 52 transitions, 233 flow [2024-11-07 11:21:35,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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 11:21:35,277 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:35,277 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:35,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-07 11:21:35,277 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-07 11:21:35,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:35,278 INFO L85 PathProgramCache]: Analyzing trace with hash 40113075, now seen corresponding path program 2 times [2024-11-07 11:21:35,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:35,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134244810] [2024-11-07 11:21:35,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:35,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:35,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:35,390 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:21:35,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:35,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134244810] [2024-11-07 11:21:35,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134244810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:21:35,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:21:35,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:21:35,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5331136] [2024-11-07 11:21:35,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:21:35,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:21:35,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:35,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:21:35,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:21:35,393 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-07 11:21:35,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 52 transitions, 233 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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 11:21:35,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:35,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-07 11:21:35,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:37,063 INFO L124 PetriNetUnfolderBase]: 19916/23877 cut-off events. [2024-11-07 11:21:37,063 INFO L125 PetriNetUnfolderBase]: For 50208/50208 co-relation queries the response was YES. [2024-11-07 11:21:37,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86031 conditions, 23877 events. 19916/23877 cut-off events. For 50208/50208 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 93369 event pairs, 3114 based on Foata normal form. 406/23843 useless extension candidates. Maximal degree in co-relation 59586. Up to 9135 conditions per place. [2024-11-07 11:21:37,168 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 122 selfloop transitions, 6 changer transitions 3/138 dead transitions. [2024-11-07 11:21:37,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 138 transitions, 961 flow [2024-11-07 11:21:37,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:21:37,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:21:37,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 155 transitions. [2024-11-07 11:21:37,170 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6739130434782609 [2024-11-07 11:21:37,170 INFO L175 Difference]: Start difference. First operand has 66 places, 52 transitions, 233 flow. Second operand 5 states and 155 transitions. [2024-11-07 11:21:37,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 138 transitions, 961 flow [2024-11-07 11:21:37,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 138 transitions, 948 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-07 11:21:37,180 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 263 flow [2024-11-07 11:21:37,180 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=263, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2024-11-07 11:21:37,181 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 18 predicate places. [2024-11-07 11:21:37,181 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 263 flow [2024-11-07 11:21:37,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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 11:21:37,181 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:37,181 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:37,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-07 11:21:37,181 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-07 11:21:37,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:37,182 INFO L85 PathProgramCache]: Analyzing trace with hash -87921704, now seen corresponding path program 1 times [2024-11-07 11:21:37,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:37,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550172031] [2024-11-07 11:21:37,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:37,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:37,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:37,273 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:21:37,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:37,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550172031] [2024-11-07 11:21:37,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550172031] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:21:37,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267582841] [2024-11-07 11:21:37,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:37,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:37,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:21:37,276 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 11:21:37,280 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 11:21:37,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:37,367 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-07 11:21:37,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:21:37,483 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:21:37,483 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 11:21:37,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267582841] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:21:37,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 11:21:37,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-07 11:21:37,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160709997] [2024-11-07 11:21:37,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:21:37,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:21:37,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:37,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:21:37,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-07 11:21:37,486 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-07 11:21:37,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 263 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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 11:21:37,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:37,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-07 11:21:37,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:38,603 INFO L124 PetriNetUnfolderBase]: 19120/22901 cut-off events. [2024-11-07 11:21:38,604 INFO L125 PetriNetUnfolderBase]: For 45293/45293 co-relation queries the response was YES. [2024-11-07 11:21:38,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89587 conditions, 22901 events. 19120/22901 cut-off events. For 45293/45293 co-relation queries the response was YES. Maximal size of possible extension queue 777. Compared 90712 event pairs, 677 based on Foata normal form. 796/23617 useless extension candidates. Maximal degree in co-relation 62527. Up to 16474 conditions per place. [2024-11-07 11:21:38,719 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 101 selfloop transitions, 4 changer transitions 0/112 dead transitions. [2024-11-07 11:21:38,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 112 transitions, 776 flow [2024-11-07 11:21:38,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:21:38,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:21:38,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-11-07 11:21:38,721 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6630434782608695 [2024-11-07 11:21:38,721 INFO L175 Difference]: Start difference. First operand has 70 places, 55 transitions, 263 flow. Second operand 4 states and 122 transitions. [2024-11-07 11:21:38,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 112 transitions, 776 flow [2024-11-07 11:21:38,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 112 transitions, 763 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-07 11:21:38,835 INFO L231 Difference]: Finished difference. Result has 73 places, 56 transitions, 276 flow [2024-11-07 11:21:38,836 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=276, PETRI_PLACES=73, PETRI_TRANSITIONS=56} [2024-11-07 11:21:38,836 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 21 predicate places. [2024-11-07 11:21:38,836 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 56 transitions, 276 flow [2024-11-07 11:21:38,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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 11:21:38,837 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:38,837 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:38,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-07 11:21:39,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:39,038 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-07 11:21:39,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:39,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1866218337, now seen corresponding path program 1 times [2024-11-07 11:21:39,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:39,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696299912] [2024-11-07 11:21:39,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:39,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:39,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:39,122 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 11:21:39,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:39,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696299912] [2024-11-07 11:21:39,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696299912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:21:39,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:21:39,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:21:39,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827382074] [2024-11-07 11:21:39,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:21:39,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:21:39,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:39,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:21:39,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:21:39,125 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-07 11:21:39,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 56 transitions, 276 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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 11:21:39,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:39,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-07 11:21:39,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:40,491 INFO L124 PetriNetUnfolderBase]: 18917/22797 cut-off events. [2024-11-07 11:21:40,491 INFO L125 PetriNetUnfolderBase]: For 58406/58406 co-relation queries the response was YES. [2024-11-07 11:21:40,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93087 conditions, 22797 events. 18917/22797 cut-off events. For 58406/58406 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 87703 event pairs, 941 based on Foata normal form. 203/22722 useless extension candidates. Maximal degree in co-relation 65339. Up to 9092 conditions per place. [2024-11-07 11:21:40,621 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 100 selfloop transitions, 4 changer transitions 35/146 dead transitions. [2024-11-07 11:21:40,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 146 transitions, 1081 flow [2024-11-07 11:21:40,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:21:40,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:21:40,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 153 transitions. [2024-11-07 11:21:40,622 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6652173913043479 [2024-11-07 11:21:40,622 INFO L175 Difference]: Start difference. First operand has 73 places, 56 transitions, 276 flow. Second operand 5 states and 153 transitions. [2024-11-07 11:21:40,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 146 transitions, 1081 flow [2024-11-07 11:21:40,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 146 transitions, 1063 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 11:21:40,715 INFO L231 Difference]: Finished difference. Result has 76 places, 56 transitions, 283 flow [2024-11-07 11:21:40,716 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=283, PETRI_PLACES=76, PETRI_TRANSITIONS=56} [2024-11-07 11:21:40,716 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 24 predicate places. [2024-11-07 11:21:40,716 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 56 transitions, 283 flow [2024-11-07 11:21:40,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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 11:21:40,716 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:40,716 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:40,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-07 11:21:40,717 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-07 11:21:40,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:40,717 INFO L85 PathProgramCache]: Analyzing trace with hash 586226707, now seen corresponding path program 2 times [2024-11-07 11:21:40,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:40,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101765087] [2024-11-07 11:21:40,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:40,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:40,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:40,825 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 11:21:40,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:40,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101765087] [2024-11-07 11:21:40,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101765087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:21:40,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:21:40,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:21:40,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135528794] [2024-11-07 11:21:40,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:21:40,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:21:40,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:40,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:21:40,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:21:40,830 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-07 11:21:40,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 56 transitions, 283 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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 11:21:40,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:40,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-07 11:21:40,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:41,998 INFO L124 PetriNetUnfolderBase]: 12943/15646 cut-off events. [2024-11-07 11:21:41,999 INFO L125 PetriNetUnfolderBase]: For 39573/39573 co-relation queries the response was YES. [2024-11-07 11:21:42,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65404 conditions, 15646 events. 12943/15646 cut-off events. For 39573/39573 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 57566 event pairs, 942 based on Foata normal form. 404/15898 useless extension candidates. Maximal degree in co-relation 45945. Up to 10371 conditions per place. [2024-11-07 11:21:42,079 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 124 selfloop transitions, 6 changer transitions 0/137 dead transitions. [2024-11-07 11:21:42,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 137 transitions, 1026 flow [2024-11-07 11:21:42,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:21:42,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:21:42,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2024-11-07 11:21:42,081 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6347826086956522 [2024-11-07 11:21:42,081 INFO L175 Difference]: Start difference. First operand has 76 places, 56 transitions, 283 flow. Second operand 5 states and 146 transitions. [2024-11-07 11:21:42,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 137 transitions, 1026 flow [2024-11-07 11:21:42,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 137 transitions, 1019 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-07 11:21:42,128 INFO L231 Difference]: Finished difference. Result has 80 places, 59 transitions, 317 flow [2024-11-07 11:21:42,128 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=317, PETRI_PLACES=80, PETRI_TRANSITIONS=59} [2024-11-07 11:21:42,128 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 28 predicate places. [2024-11-07 11:21:42,129 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 59 transitions, 317 flow [2024-11-07 11:21:42,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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 11:21:42,129 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:42,129 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:42,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-07 11:21:42,129 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-07 11:21:42,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:42,129 INFO L85 PathProgramCache]: Analyzing trace with hash -2022024224, now seen corresponding path program 1 times [2024-11-07 11:21:42,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:42,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242453520] [2024-11-07 11:21:42,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:42,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:42,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:42,739 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:21:42,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:42,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242453520] [2024-11-07 11:21:42,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242453520] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:21:42,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079044445] [2024-11-07 11:21:42,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:42,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:42,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:21:42,743 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 11:21:42,745 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 11:21:43,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:43,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-07 11:21:43,059 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:28,858 WARN L286 SmtUtils]: Spent 8.26s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)