./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/unroll-cond-3.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/unroll-cond-3.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', '9fb4c28a8a216c266c6ae14d377c8e26c68bb16bf7c2fe2809f039d12d6c4b55'] 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/unroll-cond-3.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 9fb4c28a8a216c266c6ae14d377c8e26c68bb16bf7c2fe2809f039d12d6c4b55 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 11:33:46,552 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 11:33:46,619 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-07 11:33:46,626 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 11:33:46,628 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 11:33:46,647 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 11:33:46,649 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 11:33:46,650 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 11:33:46,650 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 11:33:46,650 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 11:33:46,650 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 11:33:46,651 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 11:33:46,651 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 11:33:46,651 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 11:33:46,651 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 11:33:46,652 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 11:33:46,652 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 11:33:46,652 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 11:33:46,652 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 11:33:46,652 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 11:33:46,652 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 11:33:46,652 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 11:33:46,652 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 11:33:46,652 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 11:33:46,652 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 11:33:46,652 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 11:33:46,652 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 11:33:46,652 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 11:33:46,653 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 11:33:46,653 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 11:33:46,653 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 11:33:46,653 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 11:33:46,653 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:33:46,653 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 11:33:46,653 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 11:33:46,653 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 11:33:46,653 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 11:33:46,653 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 11:33:46,653 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 11:33:46,653 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 11:33:46,654 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 11:33:46,654 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 11:33:46,654 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 -> 9fb4c28a8a216c266c6ae14d377c8e26c68bb16bf7c2fe2809f039d12d6c4b55 [2024-11-07 11:33:46,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 11:33:46,898 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 11:33:46,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 11:33:46,902 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 11:33:46,902 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 11:33:46,903 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/unroll-cond-3.wvr.c [2024-11-07 11:33:48,011 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 11:33:48,201 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 11:33:48,202 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-3.wvr.c [2024-11-07 11:33:48,209 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5b2b219b0/c972bf2659354d8fa7cfba2d99f747ef/FLAG0cfb101b8 [2024-11-07 11:33:48,565 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5b2b219b0/c972bf2659354d8fa7cfba2d99f747ef [2024-11-07 11:33:48,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 11:33:48,568 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 11:33:48,569 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 11:33:48,569 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 11:33:48,572 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 11:33:48,572 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:33:48" (1/1) ... [2024-11-07 11:33:48,572 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@477c0751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:48, skipping insertion in model container [2024-11-07 11:33:48,573 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:33:48" (1/1) ... [2024-11-07 11:33:48,582 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 11:33:48,695 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/unroll-cond-3.wvr.c[2667,2680] [2024-11-07 11:33:48,700 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:33:48,705 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 11:33:48,729 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/unroll-cond-3.wvr.c[2667,2680] [2024-11-07 11:33:48,731 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:33:48,741 INFO L204 MainTranslator]: Completed translation [2024-11-07 11:33:48,741 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:48 WrapperNode [2024-11-07 11:33:48,741 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 11:33:48,742 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 11:33:48,742 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 11:33:48,742 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 11:33:48,746 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:48" (1/1) ... [2024-11-07 11:33:48,750 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:48" (1/1) ... [2024-11-07 11:33:48,764 INFO L138 Inliner]: procedures = 23, calls = 27, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 155 [2024-11-07 11:33:48,765 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 11:33:48,765 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 11:33:48,765 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 11:33:48,765 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 11:33:48,771 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:48" (1/1) ... [2024-11-07 11:33:48,771 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:48" (1/1) ... [2024-11-07 11:33:48,772 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:48" (1/1) ... [2024-11-07 11:33:48,782 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-07 11:33:48,782 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:48" (1/1) ... [2024-11-07 11:33:48,782 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:48" (1/1) ... [2024-11-07 11:33:48,790 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:48" (1/1) ... [2024-11-07 11:33:48,796 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:48" (1/1) ... [2024-11-07 11:33:48,797 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:48" (1/1) ... [2024-11-07 11:33:48,798 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:48" (1/1) ... [2024-11-07 11:33:48,799 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 11:33:48,800 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 11:33:48,800 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 11:33:48,800 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 11:33:48,800 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:48" (1/1) ... [2024-11-07 11:33:48,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:33:48,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:33:48,828 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 11:33:48,831 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 11:33:48,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 11:33:48,845 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-07 11:33:48,845 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-07 11:33:48,845 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-07 11:33:48,845 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-07 11:33:48,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 11:33:48,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 11:33:48,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 11:33:48,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 11:33:48,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-07 11:33:48,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 11:33:48,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 11:33:48,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 11:33:48,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 11:33:48,847 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 11:33:48,913 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 11:33:48,914 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 11:33:49,142 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 11:33:49,142 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 11:33:49,318 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 11:33:49,318 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-07 11:33:49,318 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:33:49 BoogieIcfgContainer [2024-11-07 11:33:49,318 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 11:33:49,320 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 11:33:49,320 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 11:33:49,323 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 11:33:49,323 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:33:48" (1/3) ... [2024-11-07 11:33:49,323 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@442c89e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:33:49, skipping insertion in model container [2024-11-07 11:33:49,323 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:48" (2/3) ... [2024-11-07 11:33:49,323 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@442c89e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:33:49, skipping insertion in model container [2024-11-07 11:33:49,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:33:49" (3/3) ... [2024-11-07 11:33:49,324 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-3.wvr.c [2024-11-07 11:33:49,334 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 11:33:49,334 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-07 11:33:49,334 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 11:33:49,374 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-07 11:33:49,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 24 places, 20 transitions, 54 flow [2024-11-07 11:33:49,420 INFO L124 PetriNetUnfolderBase]: 3/18 cut-off events. [2024-11-07 11:33:49,421 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 11:33:49,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 18 events. 3/18 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2024-11-07 11:33:49,424 INFO L82 GeneralOperation]: Start removeDead. Operand has 24 places, 20 transitions, 54 flow [2024-11-07 11:33:49,426 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 21 places, 17 transitions, 46 flow [2024-11-07 11:33:49,434 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 11:33:49,441 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;@7491a95e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 11:33:49,441 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-07 11:33:49,453 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 11:33:49,454 INFO L124 PetriNetUnfolderBase]: 3/16 cut-off events. [2024-11-07 11:33:49,454 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 11:33:49,454 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:33:49,455 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:33:49,455 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:33:49,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:33:49,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1958557296, now seen corresponding path program 1 times [2024-11-07 11:33:49,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:33:49,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119823143] [2024-11-07 11:33:49,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:33:49,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:33:49,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:33:49,753 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 11:33:49,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:33:49,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119823143] [2024-11-07 11:33:49,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119823143] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:33:49,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:33:49,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 11:33:49,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969172652] [2024-11-07 11:33:49,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:33:49,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 11:33:49,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:33:49,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 11:33:49,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 11:33:49,777 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-07 11:33:49,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 11:33:49,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:33:49,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-07 11:33:49,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:33:49,832 INFO L124 PetriNetUnfolderBase]: 38/71 cut-off events. [2024-11-07 11:33:49,833 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-07 11:33:49,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 71 events. 38/71 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 121 event pairs, 22 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 120. Up to 70 conditions per place. [2024-11-07 11:33:49,834 INFO L140 encePairwiseOnDemand]: 17/20 looper letters, 15 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2024-11-07 11:33:49,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 18 transitions, 82 flow [2024-11-07 11:33:49,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 11:33:49,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 11:33:49,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 27 transitions. [2024-11-07 11:33:49,847 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-11-07 11:33:49,848 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 46 flow. Second operand 3 states and 27 transitions. [2024-11-07 11:33:49,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 18 transitions, 82 flow [2024-11-07 11:33:49,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 18 transitions, 74 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-07 11:33:49,855 INFO L231 Difference]: Finished difference. Result has 20 places, 18 transitions, 50 flow [2024-11-07 11:33:49,857 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=20, PETRI_TRANSITIONS=18} [2024-11-07 11:33:49,860 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, -1 predicate places. [2024-11-07 11:33:49,861 INFO L471 AbstractCegarLoop]: Abstraction has has 20 places, 18 transitions, 50 flow [2024-11-07 11:33:49,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 11:33:49,861 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:33:49,861 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:33:49,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 11:33:49,862 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:33:49,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:33:49,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1419692673, now seen corresponding path program 1 times [2024-11-07 11:33:49,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:33:49,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592784340] [2024-11-07 11:33:49,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:33:49,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:33:49,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:33:50,263 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 11:33:50,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:33:50,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592784340] [2024-11-07 11:33:50,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592784340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:33:50,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:33:50,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:33:50,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951233261] [2024-11-07 11:33:50,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:33:50,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 11:33:50,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:33:50,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 11:33:50,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-07 11:33:50,267 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-07 11:33:50,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 18 transitions, 50 flow. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:33:50,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:33:50,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-07 11:33:50,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:33:50,460 INFO L124 PetriNetUnfolderBase]: 68/120 cut-off events. [2024-11-07 11:33:50,461 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 11:33:50,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 120 events. 68/120 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 307 event pairs, 1 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 243. Up to 80 conditions per place. [2024-11-07 11:33:50,463 INFO L140 encePairwiseOnDemand]: 13/20 looper letters, 30 selfloop transitions, 12 changer transitions 0/43 dead transitions. [2024-11-07 11:33:50,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 43 transitions, 189 flow [2024-11-07 11:33:50,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 11:33:50,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 11:33:50,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 60 transitions. [2024-11-07 11:33:50,465 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-07 11:33:50,465 INFO L175 Difference]: Start difference. First operand has 20 places, 18 transitions, 50 flow. Second operand 6 states and 60 transitions. [2024-11-07 11:33:50,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 43 transitions, 189 flow [2024-11-07 11:33:50,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 43 transitions, 185 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-07 11:33:50,466 INFO L231 Difference]: Finished difference. Result has 27 places, 29 transitions, 117 flow [2024-11-07 11:33:50,467 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=117, PETRI_PLACES=27, PETRI_TRANSITIONS=29} [2024-11-07 11:33:50,467 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 6 predicate places. [2024-11-07 11:33:50,467 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 29 transitions, 117 flow [2024-11-07 11:33:50,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:33:50,468 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:33:50,468 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:33:50,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 11:33:50,468 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:33:50,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:33:50,469 INFO L85 PathProgramCache]: Analyzing trace with hash 760488887, now seen corresponding path program 2 times [2024-11-07 11:33:50,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:33:50,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728850847] [2024-11-07 11:33:50,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:33:50,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:33:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:33:50,724 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 11:33:50,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:33:50,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728850847] [2024-11-07 11:33:50,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728850847] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:33:50,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:33:50,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:33:50,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192132641] [2024-11-07 11:33:50,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:33:50,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 11:33:50,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:33:50,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 11:33:50,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-07 11:33:50,726 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-07 11:33:50,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 29 transitions, 117 flow. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:33:50,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:33:50,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-07 11:33:50,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:33:50,852 INFO L124 PetriNetUnfolderBase]: 77/134 cut-off events. [2024-11-07 11:33:50,852 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2024-11-07 11:33:50,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 422 conditions, 134 events. 77/134 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 338 event pairs, 6 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 403. Up to 89 conditions per place. [2024-11-07 11:33:50,853 INFO L140 encePairwiseOnDemand]: 13/20 looper letters, 28 selfloop transitions, 18 changer transitions 0/47 dead transitions. [2024-11-07 11:33:50,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 47 transitions, 278 flow [2024-11-07 11:33:50,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 11:33:50,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 11:33:50,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 58 transitions. [2024-11-07 11:33:50,854 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-11-07 11:33:50,854 INFO L175 Difference]: Start difference. First operand has 27 places, 29 transitions, 117 flow. Second operand 6 states and 58 transitions. [2024-11-07 11:33:50,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 47 transitions, 278 flow [2024-11-07 11:33:50,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 47 transitions, 270 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-11-07 11:33:50,856 INFO L231 Difference]: Finished difference. Result has 35 places, 37 transitions, 212 flow [2024-11-07 11:33:50,856 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=35, PETRI_TRANSITIONS=37} [2024-11-07 11:33:50,856 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 14 predicate places. [2024-11-07 11:33:50,856 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 37 transitions, 212 flow [2024-11-07 11:33:50,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:33:50,857 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:33:50,857 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:33:50,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 11:33:50,857 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:33:50,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:33:50,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1279489767, now seen corresponding path program 3 times [2024-11-07 11:33:50,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:33:50,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534125329] [2024-11-07 11:33:50,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:33:50,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:33:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:33:51,053 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 11:33:51,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:33:51,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534125329] [2024-11-07 11:33:51,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534125329] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:33:51,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:33:51,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:33:51,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909667676] [2024-11-07 11:33:51,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:33:51,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 11:33:51,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:33:51,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 11:33:51,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-07 11:33:51,056 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-07 11:33:51,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 37 transitions, 212 flow. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:33:51,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:33:51,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-07 11:33:51,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:33:51,147 INFO L124 PetriNetUnfolderBase]: 78/147 cut-off events. [2024-11-07 11:33:51,148 INFO L125 PetriNetUnfolderBase]: For 101/101 co-relation queries the response was YES. [2024-11-07 11:33:51,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 543 conditions, 147 events. 78/147 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 405 event pairs, 1 based on Foata normal form. 1/121 useless extension candidates. Maximal degree in co-relation 519. Up to 86 conditions per place. [2024-11-07 11:33:51,150 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 33 selfloop transitions, 19 changer transitions 2/55 dead transitions. [2024-11-07 11:33:51,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 55 transitions, 379 flow [2024-11-07 11:33:51,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 11:33:51,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 11:33:51,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2024-11-07 11:33:51,152 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-11-07 11:33:51,153 INFO L175 Difference]: Start difference. First operand has 35 places, 37 transitions, 212 flow. Second operand 6 states and 64 transitions. [2024-11-07 11:33:51,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 55 transitions, 379 flow [2024-11-07 11:33:51,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 55 transitions, 355 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-07 11:33:51,157 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 258 flow [2024-11-07 11:33:51,157 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=258, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2024-11-07 11:33:51,158 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 20 predicate places. [2024-11-07 11:33:51,158 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 258 flow [2024-11-07 11:33:51,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:33:51,158 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:33:51,158 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:33:51,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 11:33:51,159 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:33:51,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:33:51,159 INFO L85 PathProgramCache]: Analyzing trace with hash -835769155, now seen corresponding path program 4 times [2024-11-07 11:33:51,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:33:51,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250214530] [2024-11-07 11:33:51,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:33:51,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:33:51,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:33:51,363 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 11:33:51,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:33:51,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250214530] [2024-11-07 11:33:51,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250214530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:33:51,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:33:51,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:33:51,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741654964] [2024-11-07 11:33:51,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:33:51,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 11:33:51,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:33:51,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 11:33:51,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-07 11:33:51,365 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-07 11:33:51,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 258 flow. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:33:51,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:33:51,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-07 11:33:51,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:33:51,469 INFO L124 PetriNetUnfolderBase]: 75/134 cut-off events. [2024-11-07 11:33:51,469 INFO L125 PetriNetUnfolderBase]: For 208/208 co-relation queries the response was YES. [2024-11-07 11:33:51,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 134 events. 75/134 cut-off events. For 208/208 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 353 event pairs, 1 based on Foata normal form. 3/117 useless extension candidates. Maximal degree in co-relation 520. Up to 89 conditions per place. [2024-11-07 11:33:51,471 INFO L140 encePairwiseOnDemand]: 13/20 looper letters, 31 selfloop transitions, 18 changer transitions 0/50 dead transitions. [2024-11-07 11:33:51,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 50 transitions, 381 flow [2024-11-07 11:33:51,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 11:33:51,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 11:33:51,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 60 transitions. [2024-11-07 11:33:51,474 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-07 11:33:51,474 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 258 flow. Second operand 6 states and 60 transitions. [2024-11-07 11:33:51,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 50 transitions, 381 flow [2024-11-07 11:33:51,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 50 transitions, 357 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-07 11:33:51,477 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 277 flow [2024-11-07 11:33:51,477 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=277, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2024-11-07 11:33:51,479 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 24 predicate places. [2024-11-07 11:33:51,479 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 277 flow [2024-11-07 11:33:51,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:33:51,480 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:33:51,480 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:33:51,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 11:33:51,480 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:33:51,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:33:51,482 INFO L85 PathProgramCache]: Analyzing trace with hash 839137127, now seen corresponding path program 5 times [2024-11-07 11:33:51,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:33:51,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269223444] [2024-11-07 11:33:51,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:33:51,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:33:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:33:51,638 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 11:33:51,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:33:51,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269223444] [2024-11-07 11:33:51,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269223444] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:33:51,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:33:51,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:33:51,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595942700] [2024-11-07 11:33:51,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:33:51,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:33:51,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:33:51,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:33:51,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:33:51,640 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-07 11:33:51,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 277 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 11:33:51,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:33:51,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-07 11:33:51,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:33:51,718 INFO L124 PetriNetUnfolderBase]: 88/154 cut-off events. [2024-11-07 11:33:51,718 INFO L125 PetriNetUnfolderBase]: For 283/283 co-relation queries the response was YES. [2024-11-07 11:33:51,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 633 conditions, 154 events. 88/154 cut-off events. For 283/283 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 416 event pairs, 20 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 605. Up to 113 conditions per place. [2024-11-07 11:33:51,720 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 30 selfloop transitions, 18 changer transitions 0/49 dead transitions. [2024-11-07 11:33:51,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 49 transitions, 411 flow [2024-11-07 11:33:51,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:33:51,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:33:51,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 47 transitions. [2024-11-07 11:33:51,723 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47 [2024-11-07 11:33:51,723 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 277 flow. Second operand 5 states and 47 transitions. [2024-11-07 11:33:51,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 49 transitions, 411 flow [2024-11-07 11:33:51,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 49 transitions, 375 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-07 11:33:51,726 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 315 flow [2024-11-07 11:33:51,726 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=315, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2024-11-07 11:33:51,726 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 26 predicate places. [2024-11-07 11:33:51,726 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 315 flow [2024-11-07 11:33:51,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 11:33:51,727 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:33:51,727 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:33:51,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 11:33:51,727 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:33:51,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:33:51,727 INFO L85 PathProgramCache]: Analyzing trace with hash -945806931, now seen corresponding path program 6 times [2024-11-07 11:33:51,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:33:51,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990668707] [2024-11-07 11:33:51,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:33:51,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:33:51,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:33:51,891 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 11:33:51,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:33:51,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990668707] [2024-11-07 11:33:51,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990668707] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:33:51,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:33:51,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:33:51,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427437804] [2024-11-07 11:33:51,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:33:51,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:33:51,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:33:51,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:33:51,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:33:51,892 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-07 11:33:51,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 315 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 11:33:51,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:33:51,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-07 11:33:51,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:33:51,988 INFO L124 PetriNetUnfolderBase]: 92/170 cut-off events. [2024-11-07 11:33:51,988 INFO L125 PetriNetUnfolderBase]: For 383/383 co-relation queries the response was YES. [2024-11-07 11:33:51,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 754 conditions, 170 events. 92/170 cut-off events. For 383/383 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 497 event pairs, 20 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 725. Up to 99 conditions per place. [2024-11-07 11:33:51,990 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 37 selfloop transitions, 17 changer transitions 0/55 dead transitions. [2024-11-07 11:33:51,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 55 transitions, 484 flow [2024-11-07 11:33:51,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:33:51,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:33:51,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 48 transitions. [2024-11-07 11:33:51,991 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48 [2024-11-07 11:33:51,991 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 315 flow. Second operand 5 states and 48 transitions. [2024-11-07 11:33:51,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 55 transitions, 484 flow [2024-11-07 11:33:51,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 55 transitions, 456 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-07 11:33:51,994 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 347 flow [2024-11-07 11:33:51,994 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=347, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2024-11-07 11:33:51,995 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 30 predicate places. [2024-11-07 11:33:51,995 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 347 flow [2024-11-07 11:33:51,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 11:33:51,995 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:33:51,995 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:33:51,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-07 11:33:51,996 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:33:51,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:33:51,996 INFO L85 PathProgramCache]: Analyzing trace with hash -804331554, now seen corresponding path program 1 times [2024-11-07 11:33:51,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:33:51,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805993154] [2024-11-07 11:33:51,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:33:51,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:33:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:33:52,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:33:52,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:33:52,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805993154] [2024-11-07 11:33:52,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805993154] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:33:52,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356135589] [2024-11-07 11:33:52,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:33:52,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:33:52,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:33:52,149 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 11:33:52,150 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 11:33:52,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:33:52,237 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-07 11:33:52,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:33:52,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-07 11:33:52,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-07 11:33:52,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:33:52,587 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:33:53,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2024-11-07 11:33:53,223 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-07 11:33:53,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 41 [2024-11-07 11:33:53,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:33:53,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356135589] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:33:53,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:33:53,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 21 [2024-11-07 11:33:53,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310936435] [2024-11-07 11:33:53,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:33:53,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-07 11:33:53,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:33:53,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-07 11:33:53,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2024-11-07 11:33:53,255 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-07 11:33:53,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 347 flow. Second operand has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 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 11:33:53,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:33:53,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-07 11:33:53,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:33:54,954 INFO L124 PetriNetUnfolderBase]: 189/373 cut-off events. [2024-11-07 11:33:54,955 INFO L125 PetriNetUnfolderBase]: For 837/837 co-relation queries the response was YES. [2024-11-07 11:33:54,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1611 conditions, 373 events. 189/373 cut-off events. For 837/837 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1507 event pairs, 3 based on Foata normal form. 4/315 useless extension candidates. Maximal degree in co-relation 1580. Up to 117 conditions per place. [2024-11-07 11:33:54,958 INFO L140 encePairwiseOnDemand]: 10/20 looper letters, 79 selfloop transitions, 45 changer transitions 3/128 dead transitions. [2024-11-07 11:33:54,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 128 transitions, 1031 flow [2024-11-07 11:33:54,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-07 11:33:54,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-07 11:33:54,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 169 transitions. [2024-11-07 11:33:54,961 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44473684210526315 [2024-11-07 11:33:54,961 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 347 flow. Second operand 19 states and 169 transitions. [2024-11-07 11:33:54,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 128 transitions, 1031 flow [2024-11-07 11:33:54,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 128 transitions, 975 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-07 11:33:54,968 INFO L231 Difference]: Finished difference. Result has 74 places, 68 transitions, 652 flow [2024-11-07 11:33:54,969 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=652, PETRI_PLACES=74, PETRI_TRANSITIONS=68} [2024-11-07 11:33:54,969 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 53 predicate places. [2024-11-07 11:33:54,970 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 68 transitions, 652 flow [2024-11-07 11:33:54,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 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 11:33:54,970 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:33:54,971 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:33:54,984 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 11:33:55,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:33:55,178 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:33:55,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:33:55,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1333235710, now seen corresponding path program 2 times [2024-11-07 11:33:55,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:33:55,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683162916] [2024-11-07 11:33:55,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:33:55,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:33:55,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:33:55,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:33:55,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:33:55,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683162916] [2024-11-07 11:33:55,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683162916] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:33:55,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115261689] [2024-11-07 11:33:55,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:33:55,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:33:55,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:33:55,340 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 11:33:55,341 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 11:33:55,403 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:33:55,403 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:33:55,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-07 11:33:55,407 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:33:55,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-07 11:33:55,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-07 11:33:55,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:33:55,639 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:33:56,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2024-11-07 11:33:56,247 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-07 11:33:56,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 41 [2024-11-07 11:33:56,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:33:56,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115261689] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:33:56,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:33:56,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 21 [2024-11-07 11:33:56,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110832738] [2024-11-07 11:33:56,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:33:56,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-07 11:33:56,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:33:56,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-07 11:33:56,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2024-11-07 11:33:56,277 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-07 11:33:56,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 68 transitions, 652 flow. Second operand has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 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 11:33:56,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:33:56,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-07 11:33:56,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:33:57,469 INFO L124 PetriNetUnfolderBase]: 221/456 cut-off events. [2024-11-07 11:33:57,469 INFO L125 PetriNetUnfolderBase]: For 1850/1850 co-relation queries the response was YES. [2024-11-07 11:33:57,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2312 conditions, 456 events. 221/456 cut-off events. For 1850/1850 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2066 event pairs, 5 based on Foata normal form. 4/433 useless extension candidates. Maximal degree in co-relation 2271. Up to 149 conditions per place. [2024-11-07 11:33:57,472 INFO L140 encePairwiseOnDemand]: 10/20 looper letters, 86 selfloop transitions, 57 changer transitions 10/154 dead transitions. [2024-11-07 11:33:57,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 154 transitions, 1447 flow [2024-11-07 11:33:57,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-07 11:33:57,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-07 11:33:57,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 194 transitions. [2024-11-07 11:33:57,474 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4409090909090909 [2024-11-07 11:33:57,474 INFO L175 Difference]: Start difference. First operand has 74 places, 68 transitions, 652 flow. Second operand 22 states and 194 transitions. [2024-11-07 11:33:57,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 154 transitions, 1447 flow [2024-11-07 11:33:57,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 154 transitions, 1273 flow, removed 75 selfloop flow, removed 4 redundant places. [2024-11-07 11:33:57,481 INFO L231 Difference]: Finished difference. Result has 96 places, 84 transitions, 816 flow [2024-11-07 11:33:57,482 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=816, PETRI_PLACES=96, PETRI_TRANSITIONS=84} [2024-11-07 11:33:57,482 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 75 predicate places. [2024-11-07 11:33:57,482 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 84 transitions, 816 flow [2024-11-07 11:33:57,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 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 11:33:57,482 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:33:57,482 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:33:57,495 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 11:33:57,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:33:57,683 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:33:57,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:33:57,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1411883950, now seen corresponding path program 3 times [2024-11-07 11:33:57,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:33:57,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88042003] [2024-11-07 11:33:57,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:33:57,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:33:57,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:33:57,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:33:57,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:33:57,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88042003] [2024-11-07 11:33:57,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88042003] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:33:57,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820199270] [2024-11-07 11:33:57,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:33:57,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:33:57,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:33:57,808 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 11:33:57,810 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 11:33:57,861 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-07 11:33:57,862 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:33:57,863 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-07 11:33:57,864 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:33:57,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-07 11:33:58,016 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:33:58,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 109 [2024-11-07 11:33:58,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:33:58,147 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:33:58,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2024-11-07 11:33:58,575 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-07 11:33:58,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 41 [2024-11-07 11:33:58,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:33:58,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820199270] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:33:58,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:33:58,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 21 [2024-11-07 11:33:58,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682455074] [2024-11-07 11:33:58,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:33:58,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-07 11:33:58,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:33:58,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-07 11:33:58,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2024-11-07 11:33:58,595 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-07 11:33:58,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 84 transitions, 816 flow. Second operand has 21 states, 21 states have (on average 5.0) internal successors, (105), 21 states have internal predecessors, (105), 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 11:33:58,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:33:58,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-07 11:33:58,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:33:59,478 INFO L124 PetriNetUnfolderBase]: 216/441 cut-off events. [2024-11-07 11:33:59,478 INFO L125 PetriNetUnfolderBase]: For 2338/2338 co-relation queries the response was YES. [2024-11-07 11:33:59,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2291 conditions, 441 events. 216/441 cut-off events. For 2338/2338 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1941 event pairs, 5 based on Foata normal form. 2/426 useless extension candidates. Maximal degree in co-relation 2244. Up to 167 conditions per place. [2024-11-07 11:33:59,482 INFO L140 encePairwiseOnDemand]: 11/20 looper letters, 74 selfloop transitions, 52 changer transitions 6/133 dead transitions. [2024-11-07 11:33:59,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 133 transitions, 1306 flow [2024-11-07 11:33:59,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-07 11:33:59,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-07 11:33:59,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 151 transitions. [2024-11-07 11:33:59,483 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4441176470588235 [2024-11-07 11:33:59,483 INFO L175 Difference]: Start difference. First operand has 96 places, 84 transitions, 816 flow. Second operand 17 states and 151 transitions. [2024-11-07 11:33:59,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 133 transitions, 1306 flow [2024-11-07 11:33:59,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 133 transitions, 1218 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-11-07 11:33:59,490 INFO L231 Difference]: Finished difference. Result has 104 places, 83 transitions, 831 flow [2024-11-07 11:33:59,490 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=831, PETRI_PLACES=104, PETRI_TRANSITIONS=83} [2024-11-07 11:33:59,491 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 83 predicate places. [2024-11-07 11:33:59,491 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 83 transitions, 831 flow [2024-11-07 11:33:59,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.0) internal successors, (105), 21 states have internal predecessors, (105), 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 11:33:59,491 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:33:59,491 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:33:59,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-07 11:33:59,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:33:59,696 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:33:59,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:33:59,696 INFO L85 PathProgramCache]: Analyzing trace with hash -995429169, now seen corresponding path program 1 times [2024-11-07 11:33:59,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:33:59,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307067978] [2024-11-07 11:33:59,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:33:59,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:33:59,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:33:59,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:33:59,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:33:59,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307067978] [2024-11-07 11:33:59,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307067978] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:33:59,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446579705] [2024-11-07 11:33:59,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:33:59,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:33:59,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:33:59,807 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:33:59,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-07 11:33:59,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:33:59,872 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-07 11:33:59,876 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:33:59,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-07 11:34:00,099 INFO L349 Elim1Store]: treesize reduction 39, result has 20.4 percent of original size [2024-11-07 11:34:00,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 154 treesize of output 88 [2024-11-07 11:34:00,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:34:00,135 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:34:01,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 318 treesize of output 280 [2024-11-07 11:34:01,129 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:34:01,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 1184 treesize of output 868 [2024-11-07 11:34:17,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:34:17,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446579705] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:34:17,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:34:17,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 8] total 21 [2024-11-07 11:34:17,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670804386] [2024-11-07 11:34:17,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:34:17,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-07 11:34:17,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:34:17,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-07 11:34:17,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2024-11-07 11:34:17,433 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-07 11:34:17,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 83 transitions, 831 flow. Second operand has 21 states, 21 states have (on average 5.142857142857143) internal successors, (108), 21 states have internal predecessors, (108), 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 11:34:17,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:34:17,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-07 11:34:17,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:34:18,664 INFO L124 PetriNetUnfolderBase]: 461/899 cut-off events. [2024-11-07 11:34:18,665 INFO L125 PetriNetUnfolderBase]: For 5571/5571 co-relation queries the response was YES. [2024-11-07 11:34:18,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4783 conditions, 899 events. 461/899 cut-off events. For 5571/5571 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4685 event pairs, 13 based on Foata normal form. 4/856 useless extension candidates. Maximal degree in co-relation 4497. Up to 294 conditions per place. [2024-11-07 11:34:18,671 INFO L140 encePairwiseOnDemand]: 10/20 looper letters, 118 selfloop transitions, 91 changer transitions 31/241 dead transitions. [2024-11-07 11:34:18,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 241 transitions, 2508 flow [2024-11-07 11:34:18,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-07 11:34:18,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-07 11:34:18,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 231 transitions. [2024-11-07 11:34:18,673 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-11-07 11:34:18,674 INFO L175 Difference]: Start difference. First operand has 104 places, 83 transitions, 831 flow. Second operand 28 states and 231 transitions. [2024-11-07 11:34:18,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 241 transitions, 2508 flow [2024-11-07 11:34:18,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 241 transitions, 2288 flow, removed 12 selfloop flow, removed 14 redundant places. [2024-11-07 11:34:18,687 INFO L231 Difference]: Finished difference. Result has 127 places, 140 transitions, 1554 flow [2024-11-07 11:34:18,688 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1554, PETRI_PLACES=127, PETRI_TRANSITIONS=140} [2024-11-07 11:34:18,689 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 106 predicate places. [2024-11-07 11:34:18,689 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 140 transitions, 1554 flow [2024-11-07 11:34:18,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.142857142857143) internal successors, (108), 21 states have internal predecessors, (108), 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 11:34:18,689 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:34:18,689 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:34:18,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-07 11:34:18,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-07 11:34:18,893 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:34:18,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:34:18,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1251118278, now seen corresponding path program 4 times [2024-11-07 11:34:18,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:34:18,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309511922] [2024-11-07 11:34:18,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:34:18,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:34:18,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:34:18,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:34:18,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:34:18,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309511922] [2024-11-07 11:34:18,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309511922] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:34:18,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842335629] [2024-11-07 11:34:18,987 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 11:34:18,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:34:18,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:34:18,989 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:34:18,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-07 11:34:19,052 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 11:34:19,053 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:34:19,053 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-07 11:34:19,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:34:19,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-07 11:34:19,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:34:19,195 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:34:19,514 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:34:19,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 150 treesize of output 119 [2024-11-07 11:34:19,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:34:19,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842335629] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:34:19,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:34:19,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 7] total 18 [2024-11-07 11:34:19,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404320101] [2024-11-07 11:34:19,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:34:19,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-07 11:34:19,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:34:19,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-07 11:34:19,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2024-11-07 11:34:19,754 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-07 11:34:19,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 140 transitions, 1554 flow. Second operand has 18 states, 18 states have (on average 5.388888888888889) internal successors, (97), 18 states have internal predecessors, (97), 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 11:34:19,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:34:19,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-07 11:34:19,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:34:20,343 INFO L124 PetriNetUnfolderBase]: 477/918 cut-off events. [2024-11-07 11:34:20,343 INFO L125 PetriNetUnfolderBase]: For 8382/8382 co-relation queries the response was YES. [2024-11-07 11:34:20,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5490 conditions, 918 events. 477/918 cut-off events. For 8382/8382 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4750 event pairs, 33 based on Foata normal form. 7/925 useless extension candidates. Maximal degree in co-relation 5296. Up to 702 conditions per place. [2024-11-07 11:34:20,350 INFO L140 encePairwiseOnDemand]: 11/20 looper letters, 120 selfloop transitions, 60 changer transitions 3/184 dead transitions. [2024-11-07 11:34:20,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 184 transitions, 2260 flow [2024-11-07 11:34:20,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-07 11:34:20,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-07 11:34:20,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 113 transitions. [2024-11-07 11:34:20,351 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4346153846153846 [2024-11-07 11:34:20,351 INFO L175 Difference]: Start difference. First operand has 127 places, 140 transitions, 1554 flow. Second operand 13 states and 113 transitions. [2024-11-07 11:34:20,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 184 transitions, 2260 flow [2024-11-07 11:34:20,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 184 transitions, 2094 flow, removed 55 selfloop flow, removed 8 redundant places. [2024-11-07 11:34:20,372 INFO L231 Difference]: Finished difference. Result has 131 places, 156 transitions, 1770 flow [2024-11-07 11:34:20,372 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1400, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1770, PETRI_PLACES=131, PETRI_TRANSITIONS=156} [2024-11-07 11:34:20,373 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 110 predicate places. [2024-11-07 11:34:20,373 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 156 transitions, 1770 flow [2024-11-07 11:34:20,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.388888888888889) internal successors, (97), 18 states have internal predecessors, (97), 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 11:34:20,373 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:34:20,373 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:34:20,385 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-07 11:34:20,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-07 11:34:20,576 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:34:20,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:34:20,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1172470038, now seen corresponding path program 5 times [2024-11-07 11:34:20,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:34:20,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149794879] [2024-11-07 11:34:20,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:34:20,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:34:20,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:34:20,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:34:20,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:34:20,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149794879] [2024-11-07 11:34:20,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149794879] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:34:20,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524441405] [2024-11-07 11:34:20,674 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 11:34:20,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:34:20,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:34:20,676 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:34:20,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-07 11:34:20,741 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:34:20,741 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:34:20,742 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-07 11:34:20,743 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:34:20,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 93 [2024-11-07 11:34:20,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:34:20,900 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:34:21,092 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:34:21,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 181 treesize of output 142 [2024-11-07 11:34:21,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:34:21,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524441405] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:34:21,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:34:21,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 19 [2024-11-07 11:34:21,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49302482] [2024-11-07 11:34:21,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:34:21,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-07 11:34:21,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:34:21,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-07 11:34:21,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2024-11-07 11:34:21,765 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-07 11:34:21,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 156 transitions, 1770 flow. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 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 11:34:21,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:34:21,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-07 11:34:21,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:34:23,449 INFO L124 PetriNetUnfolderBase]: 619/1243 cut-off events. [2024-11-07 11:34:23,449 INFO L125 PetriNetUnfolderBase]: For 11905/11905 co-relation queries the response was YES. [2024-11-07 11:34:23,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7326 conditions, 1243 events. 619/1243 cut-off events. For 11905/11905 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 7279 event pairs, 52 based on Foata normal form. 8/1251 useless extension candidates. Maximal degree in co-relation 7125. Up to 431 conditions per place. [2024-11-07 11:34:23,458 INFO L140 encePairwiseOnDemand]: 10/20 looper letters, 166 selfloop transitions, 91 changer transitions 14/272 dead transitions. [2024-11-07 11:34:23,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 272 transitions, 3269 flow [2024-11-07 11:34:23,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-07 11:34:23,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-07 11:34:23,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 221 transitions. [2024-11-07 11:34:23,459 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-11-07 11:34:23,459 INFO L175 Difference]: Start difference. First operand has 131 places, 156 transitions, 1770 flow. Second operand 26 states and 221 transitions. [2024-11-07 11:34:23,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 272 transitions, 3269 flow [2024-11-07 11:34:23,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 272 transitions, 3213 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-11-07 11:34:23,481 INFO L231 Difference]: Finished difference. Result has 156 places, 182 transitions, 2314 flow [2024-11-07 11:34:23,481 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1710, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2314, PETRI_PLACES=156, PETRI_TRANSITIONS=182} [2024-11-07 11:34:23,482 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 135 predicate places. [2024-11-07 11:34:23,482 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 182 transitions, 2314 flow [2024-11-07 11:34:23,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 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 11:34:23,482 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:34:23,482 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:34:23,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-07 11:34:23,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-07 11:34:23,686 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:34:23,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:34:23,687 INFO L85 PathProgramCache]: Analyzing trace with hash -2031939214, now seen corresponding path program 6 times [2024-11-07 11:34:23,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:34:23,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831997560] [2024-11-07 11:34:23,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:34:23,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:34:23,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:34:23,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:34:23,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:34:23,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831997560] [2024-11-07 11:34:23,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831997560] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:34:23,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68440874] [2024-11-07 11:34:23,782 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-07 11:34:23,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:34:23,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:34:23,784 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:34:23,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-07 11:34:23,903 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-07 11:34:23,904 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:34:23,904 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-07 11:34:23,906 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:34:23,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:34:23,932 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:34:23,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:34:23,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68440874] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:34:23,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:34:23,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-07 11:34:23,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027178698] [2024-11-07 11:34:23,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:34:23,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 11:34:23,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:34:23,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 11:34:23,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-07 11:34:23,975 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-07 11:34:23,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 182 transitions, 2314 flow. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 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 11:34:23,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:34:23,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-07 11:34:23,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:34:24,246 INFO L124 PetriNetUnfolderBase]: 638/1287 cut-off events. [2024-11-07 11:34:24,248 INFO L125 PetriNetUnfolderBase]: For 13934/13934 co-relation queries the response was YES. [2024-11-07 11:34:24,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7990 conditions, 1287 events. 638/1287 cut-off events. For 13934/13934 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 7662 event pairs, 274 based on Foata normal form. 10/1297 useless extension candidates. Maximal degree in co-relation 7771. Up to 1097 conditions per place. [2024-11-07 11:34:24,257 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 166 selfloop transitions, 53 changer transitions 0/220 dead transitions. [2024-11-07 11:34:24,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 220 transitions, 2981 flow [2024-11-07 11:34:24,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 11:34:24,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-07 11:34:24,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 100 transitions. [2024-11-07 11:34:24,258 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-11-07 11:34:24,258 INFO L175 Difference]: Start difference. First operand has 156 places, 182 transitions, 2314 flow. Second operand 12 states and 100 transitions. [2024-11-07 11:34:24,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 220 transitions, 2981 flow [2024-11-07 11:34:24,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 220 transitions, 2874 flow, removed 11 selfloop flow, removed 11 redundant places. [2024-11-07 11:34:24,290 INFO L231 Difference]: Finished difference. Result has 160 places, 196 transitions, 2482 flow [2024-11-07 11:34:24,290 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2213, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2482, PETRI_PLACES=160, PETRI_TRANSITIONS=196} [2024-11-07 11:34:24,291 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 139 predicate places. [2024-11-07 11:34:24,291 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 196 transitions, 2482 flow [2024-11-07 11:34:24,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 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 11:34:24,291 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:34:24,291 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:34:24,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-07 11:34:24,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:34:24,492 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:34:24,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:34:24,492 INFO L85 PathProgramCache]: Analyzing trace with hash 982989216, now seen corresponding path program 7 times [2024-11-07 11:34:24,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:34:24,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406750614] [2024-11-07 11:34:24,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:34:24,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:34:24,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:34:24,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:34:24,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:34:24,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406750614] [2024-11-07 11:34:24,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406750614] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:34:24,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322899997] [2024-11-07 11:34:24,578 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-07 11:34:24,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:34:24,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:34:24,580 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:34:24,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-07 11:34:24,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:34:24,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-07 11:34:24,639 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:34:24,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-07 11:34:24,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-07 11:34:24,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:34:24,811 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:34:31,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2024-11-07 11:34:31,539 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-07 11:34:31,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 41 [2024-11-07 11:34:31,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:34:31,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322899997] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:34:31,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:34:31,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 21 [2024-11-07 11:34:31,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897992622] [2024-11-07 11:34:31,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:34:31,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-07 11:34:31,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:34:31,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-07 11:34:31,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2024-11-07 11:34:31,563 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-07 11:34:31,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 196 transitions, 2482 flow. Second operand has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 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 11:34:31,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:34:31,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-07 11:34:31,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:34:37,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-07 11:34:37,370 INFO L124 PetriNetUnfolderBase]: 640/1313 cut-off events. [2024-11-07 11:34:37,370 INFO L125 PetriNetUnfolderBase]: For 14986/14986 co-relation queries the response was YES. [2024-11-07 11:34:37,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8392 conditions, 1313 events. 640/1313 cut-off events. For 14986/14986 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 7981 event pairs, 59 based on Foata normal form. 8/1321 useless extension candidates. Maximal degree in co-relation 8235. Up to 946 conditions per place. [2024-11-07 11:34:37,381 INFO L140 encePairwiseOnDemand]: 10/20 looper letters, 130 selfloop transitions, 105 changer transitions 6/242 dead transitions. [2024-11-07 11:34:37,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 242 transitions, 3360 flow [2024-11-07 11:34:37,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-07 11:34:37,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-07 11:34:37,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 149 transitions. [2024-11-07 11:34:37,382 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39210526315789473 [2024-11-07 11:34:37,386 INFO L175 Difference]: Start difference. First operand has 160 places, 196 transitions, 2482 flow. Second operand 19 states and 149 transitions. [2024-11-07 11:34:37,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 242 transitions, 3360 flow [2024-11-07 11:34:37,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 242 transitions, 3267 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-11-07 11:34:37,423 INFO L231 Difference]: Finished difference. Result has 178 places, 202 transitions, 2769 flow [2024-11-07 11:34:37,423 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2358, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2769, PETRI_PLACES=178, PETRI_TRANSITIONS=202} [2024-11-07 11:34:37,424 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 157 predicate places. [2024-11-07 11:34:37,424 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 202 transitions, 2769 flow [2024-11-07 11:34:37,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 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 11:34:37,424 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:34:37,424 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:34:37,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-07 11:34:37,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-07 11:34:37,629 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:34:37,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:34:37,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1061637456, now seen corresponding path program 8 times [2024-11-07 11:34:37,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:34:37,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376942166] [2024-11-07 11:34:37,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:34:37,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:34:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:34:37,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:34:37,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:34:37,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376942166] [2024-11-07 11:34:37,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376942166] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:34:37,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448362180] [2024-11-07 11:34:37,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:34:37,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:34:37,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:34:37,724 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:34:37,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-07 11:34:37,785 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:34:37,785 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:34:37,786 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-07 11:34:37,787 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:34:37,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-07 11:34:37,948 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-07 11:34:37,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 104 [2024-11-07 11:34:37,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:34:37,999 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:34:38,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2024-11-07 11:34:38,531 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-07 11:34:38,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 41 [2024-11-07 11:34:38,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 77 [2024-11-07 11:34:38,573 INFO L349 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2024-11-07 11:34:38,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 239 treesize of output 193 [2024-11-07 11:34:38,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:34:38,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448362180] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:34:38,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:34:38,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 19 [2024-11-07 11:34:38,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546465106] [2024-11-07 11:34:38,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:34:38,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-07 11:34:38,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:34:38,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-07 11:34:38,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2024-11-07 11:34:38,870 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-07 11:34:38,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 202 transitions, 2769 flow. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 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 11:34:38,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:34:38,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-07 11:34:38,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:34:40,545 INFO L124 PetriNetUnfolderBase]: 769/1569 cut-off events. [2024-11-07 11:34:40,546 INFO L125 PetriNetUnfolderBase]: For 23575/23575 co-relation queries the response was YES. [2024-11-07 11:34:40,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10723 conditions, 1569 events. 769/1569 cut-off events. For 23575/23575 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 9948 event pairs, 78 based on Foata normal form. 9/1578 useless extension candidates. Maximal degree in co-relation 10552. Up to 793 conditions per place. [2024-11-07 11:34:40,559 INFO L140 encePairwiseOnDemand]: 10/20 looper letters, 141 selfloop transitions, 140 changer transitions 18/300 dead transitions. [2024-11-07 11:34:40,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 300 transitions, 4468 flow [2024-11-07 11:34:40,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-07 11:34:40,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-07 11:34:40,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 204 transitions. [2024-11-07 11:34:40,560 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4434782608695652 [2024-11-07 11:34:40,560 INFO L175 Difference]: Start difference. First operand has 178 places, 202 transitions, 2769 flow. Second operand 23 states and 204 transitions. [2024-11-07 11:34:40,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 300 transitions, 4468 flow [2024-11-07 11:34:40,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 300 transitions, 4062 flow, removed 128 selfloop flow, removed 12 redundant places. [2024-11-07 11:34:40,618 INFO L231 Difference]: Finished difference. Result has 189 places, 232 transitions, 3378 flow [2024-11-07 11:34:40,618 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2488, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=3378, PETRI_PLACES=189, PETRI_TRANSITIONS=232} [2024-11-07 11:34:40,619 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 168 predicate places. [2024-11-07 11:34:40,619 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 232 transitions, 3378 flow [2024-11-07 11:34:40,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 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 11:34:40,619 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:34:40,619 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:34:40,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-07 11:34:40,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:34:40,820 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:34:40,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:34:40,820 INFO L85 PathProgramCache]: Analyzing trace with hash 183734254, now seen corresponding path program 9 times [2024-11-07 11:34:40,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:34:40,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965406859] [2024-11-07 11:34:40,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:34:40,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:34:40,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:34:40,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:34:40,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:34:40,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965406859] [2024-11-07 11:34:40,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965406859] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:34:40,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796063529] [2024-11-07 11:34:40,913 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:34:40,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:34:40,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:34:40,915 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:34:40,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-07 11:34:40,980 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-07 11:34:40,980 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:34:40,981 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-07 11:34:40,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:34:41,114 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:34:41,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 23 [2024-11-07 11:34:41,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:34:41,134 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:34:41,239 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:34:41,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 158 treesize of output 158 [2024-11-07 11:34:41,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:34:41,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796063529] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:34:41,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:34:41,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 17 [2024-11-07 11:34:41,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344454137] [2024-11-07 11:34:41,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:34:41,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-07 11:34:41,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:34:41,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-07 11:34:41,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2024-11-07 11:34:41,398 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-07 11:34:41,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 232 transitions, 3378 flow. Second operand has 17 states, 17 states have (on average 5.0588235294117645) internal successors, (86), 17 states have internal predecessors, (86), 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 11:34:41,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:34:41,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-07 11:34:41,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:34:42,009 INFO L124 PetriNetUnfolderBase]: 885/1848 cut-off events. [2024-11-07 11:34:42,009 INFO L125 PetriNetUnfolderBase]: For 29512/29512 co-relation queries the response was YES. [2024-11-07 11:34:42,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13105 conditions, 1848 events. 885/1848 cut-off events. For 29512/29512 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 12409 event pairs, 50 based on Foata normal form. 10/1858 useless extension candidates. Maximal degree in co-relation 12913. Up to 699 conditions per place. [2024-11-07 11:34:42,023 INFO L140 encePairwiseOnDemand]: 11/20 looper letters, 169 selfloop transitions, 151 changer transitions 5/326 dead transitions. [2024-11-07 11:34:42,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 326 transitions, 5180 flow [2024-11-07 11:34:42,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-07 11:34:42,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-07 11:34:42,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 140 transitions. [2024-11-07 11:34:42,024 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2024-11-07 11:34:42,024 INFO L175 Difference]: Start difference. First operand has 189 places, 232 transitions, 3378 flow. Second operand 17 states and 140 transitions. [2024-11-07 11:34:42,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 326 transitions, 5180 flow [2024-11-07 11:34:42,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 326 transitions, 5042 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-11-07 11:34:42,099 INFO L231 Difference]: Finished difference. Result has 206 places, 266 transitions, 4277 flow [2024-11-07 11:34:42,100 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3264, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4277, PETRI_PLACES=206, PETRI_TRANSITIONS=266} [2024-11-07 11:34:42,100 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 185 predicate places. [2024-11-07 11:34:42,100 INFO L471 AbstractCegarLoop]: Abstraction has has 206 places, 266 transitions, 4277 flow [2024-11-07 11:34:42,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.0588235294117645) internal successors, (86), 17 states have internal predecessors, (86), 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 11:34:42,100 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:34:42,100 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:34:42,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-07 11:34:42,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-07 11:34:42,301 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:34:42,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:34:42,301 INFO L85 PathProgramCache]: Analyzing trace with hash 202168280, now seen corresponding path program 10 times [2024-11-07 11:34:42,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:34:42,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858407301] [2024-11-07 11:34:42,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:34:42,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:34:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:34:42,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:34:42,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:34:42,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858407301] [2024-11-07 11:34:42,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858407301] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:34:42,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303081120] [2024-11-07 11:34:42,405 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 11:34:42,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:34:42,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:34:42,407 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:34:42,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-07 11:34:42,467 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 11:34:42,467 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:34:42,468 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-07 11:34:42,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:34:42,650 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:34:42,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 39 [2024-11-07 11:34:42,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:34:42,699 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:34:42,822 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:34:42,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 154 treesize of output 154 [2024-11-07 11:34:43,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:34:43,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303081120] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:34:43,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:34:43,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 7] total 18 [2024-11-07 11:34:43,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630108010] [2024-11-07 11:34:43,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:34:43,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-07 11:34:43,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:34:43,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-07 11:34:43,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2024-11-07 11:34:43,621 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-07 11:34:43,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 266 transitions, 4277 flow. Second operand has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 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 11:34:43,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:34:43,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-07 11:34:43,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:34:44,218 INFO L124 PetriNetUnfolderBase]: 953/2127 cut-off events. [2024-11-07 11:34:44,218 INFO L125 PetriNetUnfolderBase]: For 37056/37056 co-relation queries the response was YES. [2024-11-07 11:34:44,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15538 conditions, 2127 events. 953/2127 cut-off events. For 37056/37056 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 15733 event pairs, 6 based on Foata normal form. 4/2131 useless extension candidates. Maximal degree in co-relation 15316. Up to 1237 conditions per place. [2024-11-07 11:34:44,231 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 189 selfloop transitions, 138 changer transitions 20/348 dead transitions. [2024-11-07 11:34:44,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 348 transitions, 5951 flow [2024-11-07 11:34:44,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-07 11:34:44,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-07 11:34:44,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 124 transitions. [2024-11-07 11:34:44,232 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-11-07 11:34:44,232 INFO L175 Difference]: Start difference. First operand has 206 places, 266 transitions, 4277 flow. Second operand 16 states and 124 transitions. [2024-11-07 11:34:44,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 348 transitions, 5951 flow [2024-11-07 11:34:44,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 348 transitions, 5513 flow, removed 88 selfloop flow, removed 7 redundant places. [2024-11-07 11:34:44,347 INFO L231 Difference]: Finished difference. Result has 216 places, 295 transitions, 4697 flow [2024-11-07 11:34:44,347 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3976, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4697, PETRI_PLACES=216, PETRI_TRANSITIONS=295} [2024-11-07 11:34:44,348 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 195 predicate places. [2024-11-07 11:34:44,348 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 295 transitions, 4697 flow [2024-11-07 11:34:44,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 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 11:34:44,348 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:34:44,348 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:34:44,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-07 11:34:44,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-07 11:34:44,552 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:34:44,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:34:44,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1297409021, now seen corresponding path program 11 times [2024-11-07 11:34:44,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:34:44,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788817987] [2024-11-07 11:34:44,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:34:44,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:34:44,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:34:44,848 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:34:44,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:34:44,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788817987] [2024-11-07 11:34:44,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788817987] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:34:44,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129718633] [2024-11-07 11:34:44,849 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 11:34:44,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:34:44,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:34:44,851 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:34:44,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-07 11:34:44,925 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:34:44,925 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:34:44,926 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-07 11:34:44,928 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:34:44,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-07 11:34:45,127 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:34:45,127 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:34:46,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 77 [2024-11-07 11:34:46,475 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:34:46,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 202 treesize of output 192 [2024-11-07 11:34:47,433 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:34:47,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129718633] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:34:47,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:34:47,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 22 [2024-11-07 11:34:47,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415053648] [2024-11-07 11:34:47,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:34:47,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-07 11:34:47,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:34:47,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-07 11:34:47,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2024-11-07 11:34:47,435 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-07 11:34:47,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 295 transitions, 4697 flow. Second operand has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:34:47,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:34:47,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-07 11:34:47,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:34:49,582 INFO L124 PetriNetUnfolderBase]: 927/2063 cut-off events. [2024-11-07 11:34:49,582 INFO L125 PetriNetUnfolderBase]: For 40477/40477 co-relation queries the response was YES. [2024-11-07 11:34:49,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15577 conditions, 2063 events. 927/2063 cut-off events. For 40477/40477 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 15235 event pairs, 41 based on Foata normal form. 36/2099 useless extension candidates. Maximal degree in co-relation 15344. Up to 594 conditions per place. [2024-11-07 11:34:49,597 INFO L140 encePairwiseOnDemand]: 11/20 looper letters, 154 selfloop transitions, 41 changer transitions 251/447 dead transitions. [2024-11-07 11:34:49,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 447 transitions, 7320 flow [2024-11-07 11:34:49,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-07 11:34:49,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-07 11:34:49,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 266 transitions. [2024-11-07 11:34:49,598 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4290322580645161 [2024-11-07 11:34:49,599 INFO L175 Difference]: Start difference. First operand has 216 places, 295 transitions, 4697 flow. Second operand 31 states and 266 transitions. [2024-11-07 11:34:49,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 447 transitions, 7320 flow [2024-11-07 11:34:49,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 447 transitions, 7039 flow, removed 96 selfloop flow, removed 14 redundant places. [2024-11-07 11:34:49,748 INFO L231 Difference]: Finished difference. Result has 243 places, 161 transitions, 2367 flow [2024-11-07 11:34:49,748 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=4534, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2367, PETRI_PLACES=243, PETRI_TRANSITIONS=161} [2024-11-07 11:34:49,749 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 222 predicate places. [2024-11-07 11:34:49,749 INFO L471 AbstractCegarLoop]: Abstraction has has 243 places, 161 transitions, 2367 flow [2024-11-07 11:34:49,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:34:49,749 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:34:49,749 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:34:49,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-07 11:34:49,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:34:49,953 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:34:49,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:34:49,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1947291036, now seen corresponding path program 2 times [2024-11-07 11:34:49,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:34:49,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366627015] [2024-11-07 11:34:49,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:34:49,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:34:49,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:34:50,056 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:34:50,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:34:50,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366627015] [2024-11-07 11:34:50,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366627015] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:34:50,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010087053] [2024-11-07 11:34:50,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:34:50,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:34:50,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:34:50,058 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:34:50,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-07 11:34:50,157 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:34:50,158 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:34:50,158 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-07 11:34:50,159 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:34:50,184 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:34:50,184 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:34:50,282 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:34:50,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010087053] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:34:50,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:34:50,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-07 11:34:50,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692006085] [2024-11-07 11:34:50,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:34:50,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 11:34:50,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:34:50,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 11:34:50,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-11-07 11:34:50,283 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-07 11:34:50,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 161 transitions, 2367 flow. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 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 11:34:50,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:34:50,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-07 11:34:50,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:34:50,801 INFO L124 PetriNetUnfolderBase]: 461/1029 cut-off events. [2024-11-07 11:34:50,802 INFO L125 PetriNetUnfolderBase]: For 15493/15493 co-relation queries the response was YES. [2024-11-07 11:34:50,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7277 conditions, 1029 events. 461/1029 cut-off events. For 15493/15493 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 6395 event pairs, 90 based on Foata normal form. 24/1053 useless extension candidates. Maximal degree in co-relation 7154. Up to 400 conditions per place. [2024-11-07 11:34:50,809 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 159 selfloop transitions, 97 changer transitions 0/257 dead transitions. [2024-11-07 11:34:50,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 257 transitions, 3873 flow [2024-11-07 11:34:50,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-07 11:34:50,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-07 11:34:50,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 173 transitions. [2024-11-07 11:34:50,810 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45526315789473687 [2024-11-07 11:34:50,810 INFO L175 Difference]: Start difference. First operand has 243 places, 161 transitions, 2367 flow. Second operand 19 states and 173 transitions. [2024-11-07 11:34:50,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 257 transitions, 3873 flow [2024-11-07 11:34:50,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 257 transitions, 3301 flow, removed 212 selfloop flow, removed 33 redundant places. [2024-11-07 11:34:50,864 INFO L231 Difference]: Finished difference. Result has 196 places, 196 transitions, 2809 flow [2024-11-07 11:34:50,864 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2080, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2809, PETRI_PLACES=196, PETRI_TRANSITIONS=196} [2024-11-07 11:34:50,865 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 175 predicate places. [2024-11-07 11:34:50,865 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 196 transitions, 2809 flow [2024-11-07 11:34:50,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 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 11:34:50,865 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:34:50,866 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:34:50,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-07 11:34:51,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:34:51,067 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:34:51,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:34:51,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1568890344, now seen corresponding path program 3 times [2024-11-07 11:34:51,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:34:51,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910660883] [2024-11-07 11:34:51,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:34:51,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:34:51,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:34:51,170 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:34:51,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:34:51,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910660883] [2024-11-07 11:34:51,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910660883] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:34:51,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789135305] [2024-11-07 11:34:51,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:34:51,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:34:51,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:34:51,173 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:34:51,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-07 11:34:51,266 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-07 11:34:51,267 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:34:51,268 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-07 11:34:51,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:34:51,320 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:34:51,321 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:34:51,388 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:34:51,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789135305] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:34:51,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:34:51,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-07 11:34:51,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302517614] [2024-11-07 11:34:51,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:34:51,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-07 11:34:51,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:34:51,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-07 11:34:51,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2024-11-07 11:34:51,389 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-07 11:34:51,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 196 transitions, 2809 flow. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 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 11:34:51,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:34:51,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-07 11:34:51,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:34:52,030 INFO L124 PetriNetUnfolderBase]: 731/1574 cut-off events. [2024-11-07 11:34:52,030 INFO L125 PetriNetUnfolderBase]: For 17246/17246 co-relation queries the response was YES. [2024-11-07 11:34:52,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10456 conditions, 1574 events. 731/1574 cut-off events. For 17246/17246 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 10343 event pairs, 43 based on Foata normal form. 15/1589 useless extension candidates. Maximal degree in co-relation 10347. Up to 458 conditions per place. [2024-11-07 11:34:52,039 INFO L140 encePairwiseOnDemand]: 13/20 looper letters, 181 selfloop transitions, 166 changer transitions 0/348 dead transitions. [2024-11-07 11:34:52,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 348 transitions, 5351 flow [2024-11-07 11:34:52,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-07 11:34:52,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-07 11:34:52,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 181 transitions. [2024-11-07 11:34:52,040 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.430952380952381 [2024-11-07 11:34:52,040 INFO L175 Difference]: Start difference. First operand has 196 places, 196 transitions, 2809 flow. Second operand 21 states and 181 transitions. [2024-11-07 11:34:52,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 348 transitions, 5351 flow [2024-11-07 11:34:52,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 348 transitions, 5085 flow, removed 120 selfloop flow, removed 8 redundant places. [2024-11-07 11:34:52,097 INFO L231 Difference]: Finished difference. Result has 221 places, 272 transitions, 4346 flow [2024-11-07 11:34:52,097 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2631, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=4346, PETRI_PLACES=221, PETRI_TRANSITIONS=272} [2024-11-07 11:34:52,097 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 200 predicate places. [2024-11-07 11:34:52,097 INFO L471 AbstractCegarLoop]: Abstraction has has 221 places, 272 transitions, 4346 flow [2024-11-07 11:34:52,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 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 11:34:52,098 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:34:52,098 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:34:52,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-07 11:34:52,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-07 11:34:52,298 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:34:52,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:34:52,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1490242104, now seen corresponding path program 4 times [2024-11-07 11:34:52,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:34:52,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406534933] [2024-11-07 11:34:52,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:34:52,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:34:52,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:34:52,408 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:34:52,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:34:52,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406534933] [2024-11-07 11:34:52,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406534933] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:34:52,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540782568] [2024-11-07 11:34:52,409 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 11:34:52,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:34:52,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:34:52,411 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:34:52,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-07 11:34:52,501 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 11:34:52,501 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:34:52,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-07 11:34:52,504 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:34:52,544 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:34:52,544 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:34:52,595 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:34:52,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540782568] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:34:52,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:34:52,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-07 11:34:52,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957558082] [2024-11-07 11:34:52,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:34:52,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-07 11:34:52,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:34:52,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-07 11:34:52,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-11-07 11:34:52,596 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-07 11:34:52,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 272 transitions, 4346 flow. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 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 11:34:52,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:34:52,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-07 11:34:52,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:34:53,195 INFO L124 PetriNetUnfolderBase]: 725/1548 cut-off events. [2024-11-07 11:34:53,195 INFO L125 PetriNetUnfolderBase]: For 20863/20863 co-relation queries the response was YES. [2024-11-07 11:34:53,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11279 conditions, 1548 events. 725/1548 cut-off events. For 20863/20863 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 10016 event pairs, 45 based on Foata normal form. 16/1564 useless extension candidates. Maximal degree in co-relation 11160. Up to 422 conditions per place. [2024-11-07 11:34:53,206 INFO L140 encePairwiseOnDemand]: 13/20 looper letters, 180 selfloop transitions, 175 changer transitions 0/356 dead transitions. [2024-11-07 11:34:53,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 356 transitions, 5954 flow [2024-11-07 11:34:53,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-07 11:34:53,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-07 11:34:53,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 179 transitions. [2024-11-07 11:34:53,207 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4710526315789474 [2024-11-07 11:34:53,207 INFO L175 Difference]: Start difference. First operand has 221 places, 272 transitions, 4346 flow. Second operand 19 states and 179 transitions. [2024-11-07 11:34:53,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 356 transitions, 5954 flow [2024-11-07 11:34:53,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 356 transitions, 5573 flow, removed 155 selfloop flow, removed 4 redundant places. [2024-11-07 11:34:53,308 INFO L231 Difference]: Finished difference. Result has 239 places, 280 transitions, 4522 flow [2024-11-07 11:34:53,308 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3972, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4522, PETRI_PLACES=239, PETRI_TRANSITIONS=280} [2024-11-07 11:34:53,308 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 218 predicate places. [2024-11-07 11:34:53,308 INFO L471 AbstractCegarLoop]: Abstraction has has 239 places, 280 transitions, 4522 flow [2024-11-07 11:34:53,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 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 11:34:53,309 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:34:53,309 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:34:53,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-07 11:34:53,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:34:53,509 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:34:53,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:34:53,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1490836750, now seen corresponding path program 5 times [2024-11-07 11:34:53,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:34:53,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125187057] [2024-11-07 11:34:53,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:34:53,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:34:53,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:34:53,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:34:53,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:34:53,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125187057] [2024-11-07 11:34:53,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125187057] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:34:53,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401072162] [2024-11-07 11:34:53,639 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 11:34:53,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:34:53,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:34:53,641 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:34:53,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-07 11:34:53,727 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:34:53,727 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:34:53,728 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-07 11:34:53,729 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:34:53,777 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:34:53,777 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:34:53,825 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:34:53,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401072162] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:34:53,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:34:53,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-07 11:34:53,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437164826] [2024-11-07 11:34:53,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:34:53,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 11:34:53,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:34:53,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 11:34:53,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-11-07 11:34:53,827 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-07 11:34:53,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 280 transitions, 4522 flow. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 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 11:34:53,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:34:53,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-07 11:34:53,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:34:54,614 INFO L124 PetriNetUnfolderBase]: 751/1636 cut-off events. [2024-11-07 11:34:54,614 INFO L125 PetriNetUnfolderBase]: For 21826/21826 co-relation queries the response was YES. [2024-11-07 11:34:54,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11923 conditions, 1636 events. 751/1636 cut-off events. For 21826/21826 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 10892 event pairs, 41 based on Foata normal form. 4/1640 useless extension candidates. Maximal degree in co-relation 11796. Up to 522 conditions per place. [2024-11-07 11:34:54,626 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 199 selfloop transitions, 163 changer transitions 0/363 dead transitions. [2024-11-07 11:34:54,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 363 transitions, 6294 flow [2024-11-07 11:34:54,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-07 11:34:54,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-07 11:34:54,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 157 transitions. [2024-11-07 11:34:54,628 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46176470588235297 [2024-11-07 11:34:54,628 INFO L175 Difference]: Start difference. First operand has 239 places, 280 transitions, 4522 flow. Second operand 17 states and 157 transitions. [2024-11-07 11:34:54,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 363 transitions, 6294 flow [2024-11-07 11:34:54,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 363 transitions, 6025 flow, removed 70 selfloop flow, removed 11 redundant places. [2024-11-07 11:34:54,724 INFO L231 Difference]: Finished difference. Result has 244 places, 293 transitions, 4828 flow [2024-11-07 11:34:54,724 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=4249, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4828, PETRI_PLACES=244, PETRI_TRANSITIONS=293} [2024-11-07 11:34:54,724 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 223 predicate places. [2024-11-07 11:34:54,724 INFO L471 AbstractCegarLoop]: Abstraction has has 244 places, 293 transitions, 4828 flow [2024-11-07 11:34:54,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 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 11:34:54,724 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:34:54,724 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:34:54,736 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-07 11:34:54,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:34:54,925 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:34:54,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:34:54,925 INFO L85 PathProgramCache]: Analyzing trace with hash 2048302352, now seen corresponding path program 6 times [2024-11-07 11:34:54,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:34:54,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311805680] [2024-11-07 11:34:54,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:34:54,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:34:54,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:34:54,992 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:34:54,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:34:54,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311805680] [2024-11-07 11:34:54,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311805680] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:34:54,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387048723] [2024-11-07 11:34:54,992 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-07 11:34:54,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:34:54,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:34:54,995 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:34:54,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-07 11:34:55,103 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-07 11:34:55,103 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:34:55,106 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 11:34:55,107 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:34:55,137 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:34:55,138 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:34:55,245 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:34:55,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387048723] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:34:55,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:34:55,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-07 11:34:55,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481592647] [2024-11-07 11:34:55,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:34:55,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 11:34:55,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:34:55,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 11:34:55,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-11-07 11:34:55,246 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-07 11:34:55,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 293 transitions, 4828 flow. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 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 11:34:55,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:34:55,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-07 11:34:55,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:34:56,036 INFO L124 PetriNetUnfolderBase]: 741/1611 cut-off events. [2024-11-07 11:34:56,037 INFO L125 PetriNetUnfolderBase]: For 22225/22225 co-relation queries the response was YES. [2024-11-07 11:34:56,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11963 conditions, 1611 events. 741/1611 cut-off events. For 22225/22225 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 10675 event pairs, 109 based on Foata normal form. 18/1629 useless extension candidates. Maximal degree in co-relation 11839. Up to 551 conditions per place. [2024-11-07 11:34:56,054 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 196 selfloop transitions, 144 changer transitions 0/341 dead transitions. [2024-11-07 11:34:56,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 341 transitions, 6003 flow [2024-11-07 11:34:56,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-07 11:34:56,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-07 11:34:56,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 132 transitions. [2024-11-07 11:34:56,055 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-11-07 11:34:56,055 INFO L175 Difference]: Start difference. First operand has 244 places, 293 transitions, 4828 flow. Second operand 16 states and 132 transitions. [2024-11-07 11:34:56,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 341 transitions, 6003 flow [2024-11-07 11:34:56,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 341 transitions, 5812 flow, removed 50 selfloop flow, removed 7 redundant places. [2024-11-07 11:34:56,152 INFO L231 Difference]: Finished difference. Result has 254 places, 303 transitions, 5130 flow [2024-11-07 11:34:56,152 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=4620, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5130, PETRI_PLACES=254, PETRI_TRANSITIONS=303} [2024-11-07 11:34:56,153 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 233 predicate places. [2024-11-07 11:34:56,153 INFO L471 AbstractCegarLoop]: Abstraction has has 254 places, 303 transitions, 5130 flow [2024-11-07 11:34:56,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 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 11:34:56,153 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:34:56,153 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:34:56,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-07 11:34:56,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:34:56,358 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:34:56,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:34:56,358 INFO L85 PathProgramCache]: Analyzing trace with hash -695149664, now seen corresponding path program 7 times [2024-11-07 11:34:56,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:34:56,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321134906] [2024-11-07 11:34:56,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:34:56,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:34:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:34:56,466 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:34:56,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:34:56,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321134906] [2024-11-07 11:34:56,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321134906] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:34:56,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957438261] [2024-11-07 11:34:56,467 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-07 11:34:56,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:34:56,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:34:56,469 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:34:56,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-07 11:34:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:34:56,558 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-07 11:34:56,559 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:34:56,595 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:34:56,595 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:34:56,703 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:34:56,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957438261] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:34:56,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:34:56,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-07 11:34:56,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850551727] [2024-11-07 11:34:56,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:34:56,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 11:34:56,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:34:56,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 11:34:56,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-11-07 11:34:56,705 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-07 11:34:56,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 303 transitions, 5130 flow. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 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 11:34:56,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:34:56,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-07 11:34:56,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:34:58,406 INFO L124 PetriNetUnfolderBase]: 799/1714 cut-off events. [2024-11-07 11:34:58,406 INFO L125 PetriNetUnfolderBase]: For 25368/25368 co-relation queries the response was YES. [2024-11-07 11:34:58,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13011 conditions, 1714 events. 799/1714 cut-off events. For 25368/25368 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 11380 event pairs, 199 based on Foata normal form. 18/1732 useless extension candidates. Maximal degree in co-relation 12885. Up to 1054 conditions per place. [2024-11-07 11:34:58,417 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 214 selfloop transitions, 150 changer transitions 0/365 dead transitions. [2024-11-07 11:34:58,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 365 transitions, 6470 flow [2024-11-07 11:34:58,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-07 11:34:58,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-07 11:34:58,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 143 transitions. [2024-11-07 11:34:58,418 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42058823529411765 [2024-11-07 11:34:58,418 INFO L175 Difference]: Start difference. First operand has 254 places, 303 transitions, 5130 flow. Second operand 17 states and 143 transitions. [2024-11-07 11:34:58,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 365 transitions, 6470 flow [2024-11-07 11:34:58,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 365 transitions, 6258 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-11-07 11:34:58,513 INFO L231 Difference]: Finished difference. Result has 267 places, 323 transitions, 5720 flow [2024-11-07 11:34:58,513 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=4846, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5720, PETRI_PLACES=267, PETRI_TRANSITIONS=323} [2024-11-07 11:34:58,513 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 246 predicate places. [2024-11-07 11:34:58,513 INFO L471 AbstractCegarLoop]: Abstraction has has 267 places, 323 transitions, 5720 flow [2024-11-07 11:34:58,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 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 11:34:58,513 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:34:58,514 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:34:58,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-07 11:34:58,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-07 11:34:58,714 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:34:58,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:34:58,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1675124684, now seen corresponding path program 1 times [2024-11-07 11:34:58,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:34:58,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174526024] [2024-11-07 11:34:58,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:34:58,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:34:58,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:34:58,822 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:34:58,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:34:58,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174526024] [2024-11-07 11:34:58,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174526024] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:34:58,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039734333] [2024-11-07 11:34:58,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:34:58,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:34:58,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:34:58,824 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:34:58,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-07 11:34:58,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:34:58,890 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-07 11:34:58,920 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:34:58,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-07 11:34:59,105 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-07 11:34:59,147 INFO L349 Elim1Store]: treesize reduction 112, result has 12.5 percent of original size [2024-11-07 11:34:59,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 15 case distinctions, treesize of input 218 treesize of output 152 [2024-11-07 11:34:59,192 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:34:59,193 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:35:00,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 509 treesize of output 451 [2024-11-07 11:35:01,508 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:35:01,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 19 new quantified variables, introduced 66 case distinctions, treesize of input 2346 treesize of output 2026