./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/array-eq-symm.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/array-eq-symm.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', '6897befed0dbbae24492a1e82d50fcd0be6b3857b241d882a904d02a513d7a6d'] 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/array-eq-symm.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 6897befed0dbbae24492a1e82d50fcd0be6b3857b241d882a904d02a513d7a6d --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 11:20:53,011 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 11:20:53,093 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-07 11:20:53,101 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 11:20:53,101 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 11:20:53,126 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 11:20:53,127 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 11:20:53,127 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 11:20:53,128 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 11:20:53,128 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 11:20:53,128 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 11:20:53,128 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 11:20:53,129 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 11:20:53,130 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 11:20:53,130 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 11:20:53,130 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 11:20:53,130 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 11:20:53,130 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 11:20:53,130 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 11:20:53,130 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 11:20:53,130 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 11:20:53,130 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 11:20:53,130 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 11:20:53,130 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 11:20:53,131 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 11:20:53,131 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 11:20:53,131 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 11:20:53,131 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 11:20:53,131 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 11:20:53,131 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 11:20:53,131 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 11:20:53,131 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 11:20:53,132 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:20:53,132 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 11:20:53,132 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 11:20:53,132 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 11:20:53,132 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 11:20:53,132 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 11:20:53,132 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 11:20:53,133 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 11:20:53,133 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 11:20:53,133 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 11:20:53,133 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 -> 6897befed0dbbae24492a1e82d50fcd0be6b3857b241d882a904d02a513d7a6d [2024-11-07 11:20:53,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 11:20:53,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 11:20:53,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 11:20:53,366 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 11:20:53,366 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 11:20:53,367 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2024-11-07 11:20:54,585 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 11:20:54,806 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 11:20:54,808 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2024-11-07 11:20:54,815 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/28b488314/8913ebc982fc4325a9561d133c67264d/FLAGe608896e5 [2024-11-07 11:20:55,162 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/28b488314/8913ebc982fc4325a9561d133c67264d [2024-11-07 11:20:55,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 11:20:55,166 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 11:20:55,168 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 11:20:55,168 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 11:20:55,171 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 11:20:55,171 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:20:55" (1/1) ... [2024-11-07 11:20:55,172 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@719fd2c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:20:55, skipping insertion in model container [2024-11-07 11:20:55,172 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:20:55" (1/1) ... [2024-11-07 11:20:55,184 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 11:20:55,324 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/array-eq-symm.wvr.c[2277,2290] [2024-11-07 11:20:55,343 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:20:55,362 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 11:20:55,388 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/array-eq-symm.wvr.c[2277,2290] [2024-11-07 11:20:55,392 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:20:55,403 INFO L204 MainTranslator]: Completed translation [2024-11-07 11:20:55,405 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:20:55 WrapperNode [2024-11-07 11:20:55,405 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 11:20:55,406 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 11:20:55,407 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 11:20:55,407 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 11:20:55,412 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:20:55" (1/1) ... [2024-11-07 11:20:55,418 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:20:55" (1/1) ... [2024-11-07 11:20:55,436 INFO L138 Inliner]: procedures = 22, calls = 19, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 105 [2024-11-07 11:20:55,436 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 11:20:55,437 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 11:20:55,437 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 11:20:55,437 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 11:20:55,444 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:20:55" (1/1) ... [2024-11-07 11:20:55,445 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:20:55" (1/1) ... [2024-11-07 11:20:55,451 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:20:55" (1/1) ... [2024-11-07 11:20:55,468 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-07 11:20:55,469 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:20:55" (1/1) ... [2024-11-07 11:20:55,469 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:20:55" (1/1) ... [2024-11-07 11:20:55,476 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:20:55" (1/1) ... [2024-11-07 11:20:55,483 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:20:55" (1/1) ... [2024-11-07 11:20:55,486 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:20:55" (1/1) ... [2024-11-07 11:20:55,486 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:20:55" (1/1) ... [2024-11-07 11:20:55,492 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 11:20:55,492 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 11:20:55,492 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 11:20:55,493 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 11:20:55,493 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:20:55" (1/1) ... [2024-11-07 11:20:55,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:20:55,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:20:55,521 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 11:20:55,524 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 11:20:55,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 11:20:55,544 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-07 11:20:55,544 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-07 11:20:55,544 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-07 11:20:55,545 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-07 11:20:55,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 11:20:55,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 11:20:55,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 11:20:55,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 11:20:55,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-07 11:20:55,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 11:20:55,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 11:20:55,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 11:20:55,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 11:20:55,547 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 11:20:55,635 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 11:20:55,636 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 11:20:55,803 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 11:20:55,803 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 11:20:56,050 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 11:20:56,050 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-07 11:20:56,051 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:20:56 BoogieIcfgContainer [2024-11-07 11:20:56,052 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 11:20:56,053 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 11:20:56,054 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 11:20:56,058 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 11:20:56,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:20:55" (1/3) ... [2024-11-07 11:20:56,058 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70321d0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:20:56, skipping insertion in model container [2024-11-07 11:20:56,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:20:55" (2/3) ... [2024-11-07 11:20:56,059 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70321d0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:20:56, skipping insertion in model container [2024-11-07 11:20:56,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:20:56" (3/3) ... [2024-11-07 11:20:56,060 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-symm.wvr.c [2024-11-07 11:20:56,071 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 11:20:56,072 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-07 11:20:56,072 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 11:20:56,121 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-07 11:20:56,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 28 transitions, 70 flow [2024-11-07 11:20:56,174 INFO L124 PetriNetUnfolderBase]: 6/26 cut-off events. [2024-11-07 11:20:56,176 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 11:20:56,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 26 events. 6/26 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 25 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2024-11-07 11:20:56,178 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 28 transitions, 70 flow [2024-11-07 11:20:56,180 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 25 transitions, 62 flow [2024-11-07 11:20:56,185 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 11:20:56,192 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;@28587875, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 11:20:56,192 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-07 11:20:56,200 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 11:20:56,201 INFO L124 PetriNetUnfolderBase]: 6/24 cut-off events. [2024-11-07 11:20:56,201 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 11:20:56,201 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:20:56,201 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:20:56,202 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 11:20:56,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:20:56,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1113111192, now seen corresponding path program 1 times [2024-11-07 11:20:56,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:20:56,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771826629] [2024-11-07 11:20:56,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:20:56,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:20:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:20:56,519 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 11:20:56,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:20:56,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771826629] [2024-11-07 11:20:56,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771826629] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:20:56,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:20:56,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 11:20:56,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101056499] [2024-11-07 11:20:56,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:20:56,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 11:20:56,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:20:56,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 11:20:56,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 11:20:56,564 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:20:56,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 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 11:20:56,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:20:56,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:20:56,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:20:56,713 INFO L124 PetriNetUnfolderBase]: 207/323 cut-off events. [2024-11-07 11:20:56,714 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-11-07 11:20:56,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 674 conditions, 323 events. 207/323 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1131 event pairs, 42 based on Foata normal form. 1/220 useless extension candidates. Maximal degree in co-relation 596. Up to 208 conditions per place. [2024-11-07 11:20:56,717 INFO L140 encePairwiseOnDemand]: 24/28 looper letters, 33 selfloop transitions, 3 changer transitions 1/40 dead transitions. [2024-11-07 11:20:56,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 40 transitions, 175 flow [2024-11-07 11:20:56,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 11:20:56,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 11:20:56,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2024-11-07 11:20:56,738 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6309523809523809 [2024-11-07 11:20:56,739 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 62 flow. Second operand 3 states and 53 transitions. [2024-11-07 11:20:56,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 40 transitions, 175 flow [2024-11-07 11:20:56,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 40 transitions, 161 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-07 11:20:56,749 INFO L231 Difference]: Finished difference. Result has 25 places, 27 transitions, 73 flow [2024-11-07 11:20:56,755 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=25, PETRI_TRANSITIONS=27} [2024-11-07 11:20:56,757 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, -1 predicate places. [2024-11-07 11:20:56,758 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 27 transitions, 73 flow [2024-11-07 11:20:56,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 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 11:20:56,758 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:20:56,758 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:20:56,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 11:20:56,758 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 11:20:56,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:20:56,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1220597756, now seen corresponding path program 1 times [2024-11-07 11:20:56,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:20:56,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61584336] [2024-11-07 11:20:56,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:20:56,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:20:56,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:20:56,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:20:56,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:20:56,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61584336] [2024-11-07 11:20:56,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61584336] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:20:56,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:20:56,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:20:56,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724063877] [2024-11-07 11:20:56,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:20:56,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:20:56,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:20:56,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:20:56,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:20:56,985 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:20:56,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 27 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:20:56,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:20:56,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:20:56,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:20:57,215 INFO L124 PetriNetUnfolderBase]: 292/481 cut-off events. [2024-11-07 11:20:57,219 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-11-07 11:20:57,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1055 conditions, 481 events. 292/481 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1950 event pairs, 170 based on Foata normal form. 0/402 useless extension candidates. Maximal degree in co-relation 392. Up to 319 conditions per place. [2024-11-07 11:20:57,226 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 40 selfloop transitions, 5 changer transitions 0/48 dead transitions. [2024-11-07 11:20:57,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 48 transitions, 216 flow [2024-11-07 11:20:57,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:20:57,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:20:57,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 68 transitions. [2024-11-07 11:20:57,229 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-11-07 11:20:57,229 INFO L175 Difference]: Start difference. First operand has 25 places, 27 transitions, 73 flow. Second operand 5 states and 68 transitions. [2024-11-07 11:20:57,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 48 transitions, 216 flow [2024-11-07 11:20:57,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 48 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 11:20:57,234 INFO L231 Difference]: Finished difference. Result has 31 places, 31 transitions, 106 flow [2024-11-07 11:20:57,234 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=106, PETRI_PLACES=31, PETRI_TRANSITIONS=31} [2024-11-07 11:20:57,234 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2024-11-07 11:20:57,234 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 31 transitions, 106 flow [2024-11-07 11:20:57,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:20:57,235 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:20:57,235 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:20:57,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 11:20:57,235 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 11:20:57,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:20:57,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1689689306, now seen corresponding path program 1 times [2024-11-07 11:20:57,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:20:57,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464040626] [2024-11-07 11:20:57,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:20:57,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:20:57,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:20:57,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:20:57,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:20:57,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464040626] [2024-11-07 11:20:57,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464040626] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:20:57,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:20:57,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:20:57,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026498939] [2024-11-07 11:20:57,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:20:57,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:20:57,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:20:57,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:20:57,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:20:57,334 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:20:57,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 31 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:20:57,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:20:57,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:20:57,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:20:57,432 INFO L124 PetriNetUnfolderBase]: 231/382 cut-off events. [2024-11-07 11:20:57,432 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-11-07 11:20:57,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 865 conditions, 382 events. 231/382 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1410 event pairs, 130 based on Foata normal form. 0/348 useless extension candidates. Maximal degree in co-relation 725. Up to 319 conditions per place. [2024-11-07 11:20:57,435 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 23 selfloop transitions, 2 changer transitions 15/43 dead transitions. [2024-11-07 11:20:57,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 43 transitions, 218 flow [2024-11-07 11:20:57,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:20:57,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:20:57,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2024-11-07 11:20:57,436 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-11-07 11:20:57,436 INFO L175 Difference]: Start difference. First operand has 31 places, 31 transitions, 106 flow. Second operand 5 states and 64 transitions. [2024-11-07 11:20:57,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 43 transitions, 218 flow [2024-11-07 11:20:57,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 43 transitions, 212 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-07 11:20:57,437 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 90 flow [2024-11-07 11:20:57,438 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=90, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-11-07 11:20:57,438 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 9 predicate places. [2024-11-07 11:20:57,438 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 90 flow [2024-11-07 11:20:57,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:20:57,438 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:20:57,439 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:20:57,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 11:20:57,439 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 11:20:57,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:20:57,439 INFO L85 PathProgramCache]: Analyzing trace with hash 140296278, now seen corresponding path program 1 times [2024-11-07 11:20:57,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:20:57,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550862216] [2024-11-07 11:20:57,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:20:57,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:20:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:20:57,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:20:57,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:20:57,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550862216] [2024-11-07 11:20:57,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550862216] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:20:57,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:20:57,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 11:20:57,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451151572] [2024-11-07 11:20:57,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:20:57,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:20:57,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:20:57,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:20:57,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:20:57,595 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:20:57,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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 11:20:57,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:20:57,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:20:57,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:20:57,721 INFO L124 PetriNetUnfolderBase]: 337/556 cut-off events. [2024-11-07 11:20:57,722 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2024-11-07 11:20:57,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1287 conditions, 556 events. 337/556 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2315 event pairs, 155 based on Foata normal form. 18/569 useless extension candidates. Maximal degree in co-relation 1271. Up to 220 conditions per place. [2024-11-07 11:20:57,728 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 52 selfloop transitions, 6 changer transitions 0/61 dead transitions. [2024-11-07 11:20:57,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 61 transitions, 301 flow [2024-11-07 11:20:57,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:20:57,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:20:57,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-11-07 11:20:57,731 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-11-07 11:20:57,732 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 90 flow. Second operand 5 states and 80 transitions. [2024-11-07 11:20:57,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 61 transitions, 301 flow [2024-11-07 11:20:57,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 61 transitions, 279 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-11-07 11:20:57,734 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 115 flow [2024-11-07 11:20:57,734 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=115, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2024-11-07 11:20:57,734 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2024-11-07 11:20:57,734 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 115 flow [2024-11-07 11:20:57,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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 11:20:57,736 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:20:57,736 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:20:57,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 11:20:57,736 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 11:20:57,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:20:57,737 INFO L85 PathProgramCache]: Analyzing trace with hash 880851478, now seen corresponding path program 1 times [2024-11-07 11:20:57,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:20:57,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757412462] [2024-11-07 11:20:57,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:20:57,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:20:57,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:20:57,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:20:57,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:20:57,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757412462] [2024-11-07 11:20:57,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757412462] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:20:57,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:20:57,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 11:20:57,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298745052] [2024-11-07 11:20:57,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:20:57,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:20:57,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:20:57,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:20:57,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:20:57,865 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:20:57,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 115 flow. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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 11:20:57,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:20:57,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:20:57,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:20:57,983 INFO L124 PetriNetUnfolderBase]: 321/532 cut-off events. [2024-11-07 11:20:57,984 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2024-11-07 11:20:57,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1253 conditions, 532 events. 321/532 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2081 event pairs, 115 based on Foata normal form. 0/494 useless extension candidates. Maximal degree in co-relation 1230. Up to 238 conditions per place. [2024-11-07 11:20:57,987 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 36 selfloop transitions, 5 changer transitions 11/55 dead transitions. [2024-11-07 11:20:57,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 55 transitions, 283 flow [2024-11-07 11:20:57,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:20:57,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:20:57,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 74 transitions. [2024-11-07 11:20:57,988 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5285714285714286 [2024-11-07 11:20:57,989 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 115 flow. Second operand 5 states and 74 transitions. [2024-11-07 11:20:57,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 55 transitions, 283 flow [2024-11-07 11:20:57,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 55 transitions, 278 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-07 11:20:57,991 INFO L231 Difference]: Finished difference. Result has 38 places, 31 transitions, 127 flow [2024-11-07 11:20:57,991 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=127, PETRI_PLACES=38, PETRI_TRANSITIONS=31} [2024-11-07 11:20:57,992 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 12 predicate places. [2024-11-07 11:20:57,992 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 31 transitions, 127 flow [2024-11-07 11:20:57,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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 11:20:57,992 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:20:57,992 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:20:57,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 11:20:57,992 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 11:20:57,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:20:57,992 INFO L85 PathProgramCache]: Analyzing trace with hash 221294698, now seen corresponding path program 1 times [2024-11-07 11:20:57,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:20:57,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980804517] [2024-11-07 11:20:57,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:20:57,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:20:58,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:20:58,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:20:58,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:20:58,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980804517] [2024-11-07 11:20:58,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980804517] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:20:58,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502107471] [2024-11-07 11:20:58,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:20:58,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:20:58,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:20:58,181 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 11:20:58,185 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 11:20:58,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:20:58,255 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 11:20:58,258 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:20:58,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:20:58,382 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:20:58,520 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:20:58,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502107471] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-07 11:20:58,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-07 11:20:58,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 14 [2024-11-07 11:20:58,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758344799] [2024-11-07 11:20:58,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:20:58,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 11:20:58,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:20:58,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 11:20:58,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2024-11-07 11:20:58,522 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:20:58,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 127 flow. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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 11:20:58,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:20:58,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:20:58,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:20:58,704 INFO L124 PetriNetUnfolderBase]: 323/544 cut-off events. [2024-11-07 11:20:58,704 INFO L125 PetriNetUnfolderBase]: For 258/258 co-relation queries the response was YES. [2024-11-07 11:20:58,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1375 conditions, 544 events. 323/544 cut-off events. For 258/258 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2116 event pairs, 93 based on Foata normal form. 16/557 useless extension candidates. Maximal degree in co-relation 1347. Up to 217 conditions per place. [2024-11-07 11:20:58,707 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 43 selfloop transitions, 8 changer transitions 0/54 dead transitions. [2024-11-07 11:20:58,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 54 transitions, 301 flow [2024-11-07 11:20:58,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 11:20:58,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 11:20:58,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-11-07 11:20:58,709 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42346938775510207 [2024-11-07 11:20:58,709 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 127 flow. Second operand 7 states and 83 transitions. [2024-11-07 11:20:58,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 54 transitions, 301 flow [2024-11-07 11:20:58,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 54 transitions, 286 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-07 11:20:58,712 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 148 flow [2024-11-07 11:20:58,713 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=148, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2024-11-07 11:20:58,713 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 14 predicate places. [2024-11-07 11:20:58,714 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 148 flow [2024-11-07 11:20:58,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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 11:20:58,714 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:20:58,714 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:20:58,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-07 11:20:58,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:20:58,918 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 11:20:58,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:20:58,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1389849294, now seen corresponding path program 1 times [2024-11-07 11:20:58,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:20:58,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121990043] [2024-11-07 11:20:58,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:20:58,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:20:58,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:20:59,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:20:59,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:20:59,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121990043] [2024-11-07 11:20:59,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121990043] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:20:59,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605147285] [2024-11-07 11:20:59,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:20:59,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:20:59,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:20:59,111 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 11:20:59,118 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 11:20:59,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:20:59,191 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 11:20:59,192 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:20:59,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:20:59,273 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:20:59,411 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:20:59,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605147285] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-07 11:20:59,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-07 11:20:59,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 13 [2024-11-07 11:20:59,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242697305] [2024-11-07 11:20:59,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:20:59,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 11:20:59,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:20:59,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 11:20:59,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2024-11-07 11:20:59,416 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:20:59,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 148 flow. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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 11:20:59,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:20:59,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:20:59,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:20:59,694 INFO L124 PetriNetUnfolderBase]: 353/636 cut-off events. [2024-11-07 11:20:59,694 INFO L125 PetriNetUnfolderBase]: For 455/455 co-relation queries the response was YES. [2024-11-07 11:20:59,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1648 conditions, 636 events. 353/636 cut-off events. For 455/455 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2845 event pairs, 138 based on Foata normal form. 0/612 useless extension candidates. Maximal degree in co-relation 1618. Up to 223 conditions per place. [2024-11-07 11:20:59,698 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 50 selfloop transitions, 8 changer transitions 0/61 dead transitions. [2024-11-07 11:20:59,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 61 transitions, 368 flow [2024-11-07 11:20:59,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 11:20:59,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 11:20:59,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-11-07 11:20:59,699 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44387755102040816 [2024-11-07 11:20:59,699 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 148 flow. Second operand 7 states and 87 transitions. [2024-11-07 11:20:59,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 61 transitions, 368 flow [2024-11-07 11:20:59,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 61 transitions, 346 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-11-07 11:20:59,703 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 162 flow [2024-11-07 11:20:59,703 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=162, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2024-11-07 11:20:59,703 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 18 predicate places. [2024-11-07 11:20:59,704 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 162 flow [2024-11-07 11:20:59,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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 11:20:59,704 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:20:59,704 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:20:59,720 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 11:20:59,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:20:59,909 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 11:20:59,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:20:59,910 INFO L85 PathProgramCache]: Analyzing trace with hash 857225227, now seen corresponding path program 1 times [2024-11-07 11:20:59,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:20:59,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52943530] [2024-11-07 11:20:59,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:20:59,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:20:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:00,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:21:00,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:00,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52943530] [2024-11-07 11:21:00,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52943530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:21:00,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:21:00,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 11:21:00,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420190598] [2024-11-07 11:21:00,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:21:00,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-07 11:21:00,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:00,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-07 11:21:00,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-07 11:21:00,241 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:21:00,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 162 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:00,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:00,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:21:00,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:00,435 INFO L124 PetriNetUnfolderBase]: 365/655 cut-off events. [2024-11-07 11:21:00,435 INFO L125 PetriNetUnfolderBase]: For 547/547 co-relation queries the response was YES. [2024-11-07 11:21:00,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1809 conditions, 655 events. 365/655 cut-off events. For 547/547 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2852 event pairs, 102 based on Foata normal form. 5/659 useless extension candidates. Maximal degree in co-relation 1778. Up to 536 conditions per place. [2024-11-07 11:21:00,438 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 40 selfloop transitions, 11 changer transitions 6/60 dead transitions. [2024-11-07 11:21:00,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 60 transitions, 361 flow [2024-11-07 11:21:00,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 11:21:00,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 11:21:00,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-11-07 11:21:00,440 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44387755102040816 [2024-11-07 11:21:00,441 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 162 flow. Second operand 7 states and 87 transitions. [2024-11-07 11:21:00,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 60 transitions, 361 flow [2024-11-07 11:21:00,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 60 transitions, 341 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-07 11:21:00,442 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 228 flow [2024-11-07 11:21:00,442 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=228, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2024-11-07 11:21:00,443 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 23 predicate places. [2024-11-07 11:21:00,443 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 228 flow [2024-11-07 11:21:00,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:00,443 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:00,443 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:00,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-07 11:21:00,444 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 11:21:00,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:00,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1135586795, now seen corresponding path program 2 times [2024-11-07 11:21:00,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:00,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256369064] [2024-11-07 11:21:00,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:00,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:00,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:00,811 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:21:00,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:00,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256369064] [2024-11-07 11:21:00,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256369064] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:21:00,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:21:00,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 11:21:00,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44065017] [2024-11-07 11:21:00,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:21:00,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-07 11:21:00,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:00,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-07 11:21:00,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-07 11:21:00,814 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:21:00,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 228 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:00,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:00,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:21:00,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:01,004 INFO L124 PetriNetUnfolderBase]: 363/652 cut-off events. [2024-11-07 11:21:01,005 INFO L125 PetriNetUnfolderBase]: For 691/691 co-relation queries the response was YES. [2024-11-07 11:21:01,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2055 conditions, 652 events. 363/652 cut-off events. For 691/691 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2882 event pairs, 75 based on Foata normal form. 5/657 useless extension candidates. Maximal degree in co-relation 2024. Up to 536 conditions per place. [2024-11-07 11:21:01,010 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 42 selfloop transitions, 10 changer transitions 10/65 dead transitions. [2024-11-07 11:21:01,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 65 transitions, 441 flow [2024-11-07 11:21:01,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 11:21:01,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 11:21:01,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-11-07 11:21:01,012 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45408163265306123 [2024-11-07 11:21:01,012 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 228 flow. Second operand 7 states and 89 transitions. [2024-11-07 11:21:01,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 65 transitions, 441 flow [2024-11-07 11:21:01,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 65 transitions, 411 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-11-07 11:21:01,017 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 243 flow [2024-11-07 11:21:01,017 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=243, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2024-11-07 11:21:01,018 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 26 predicate places. [2024-11-07 11:21:01,018 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 243 flow [2024-11-07 11:21:01,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:01,018 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:01,018 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:01,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-07 11:21:01,018 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 11:21:01,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:01,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1909171475, now seen corresponding path program 1 times [2024-11-07 11:21:01,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:01,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231967241] [2024-11-07 11:21:01,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:01,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:01,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:21:01,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:01,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231967241] [2024-11-07 11:21:01,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231967241] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:21:01,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:21:01,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 11:21:01,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325056516] [2024-11-07 11:21:01,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:21:01,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-07 11:21:01,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:01,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-07 11:21:01,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-07 11:21:01,573 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:21:01,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 243 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:01,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:01,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:21:01,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:01,871 INFO L124 PetriNetUnfolderBase]: 357/646 cut-off events. [2024-11-07 11:21:01,871 INFO L125 PetriNetUnfolderBase]: For 814/820 co-relation queries the response was YES. [2024-11-07 11:21:01,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2064 conditions, 646 events. 357/646 cut-off events. For 814/820 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2743 event pairs, 147 based on Foata normal form. 6/652 useless extension candidates. Maximal degree in co-relation 2033. Up to 536 conditions per place. [2024-11-07 11:21:01,878 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 37 selfloop transitions, 14 changer transitions 11/65 dead transitions. [2024-11-07 11:21:01,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 65 transitions, 481 flow [2024-11-07 11:21:01,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 11:21:01,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 11:21:01,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-11-07 11:21:01,880 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4387755102040816 [2024-11-07 11:21:01,880 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 243 flow. Second operand 7 states and 86 transitions. [2024-11-07 11:21:01,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 65 transitions, 481 flow [2024-11-07 11:21:01,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 65 transitions, 443 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-07 11:21:01,886 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 304 flow [2024-11-07 11:21:01,887 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=304, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2024-11-07 11:21:01,888 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 30 predicate places. [2024-11-07 11:21:01,888 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 304 flow [2024-11-07 11:21:01,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:01,889 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:01,889 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:01,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-07 11:21:01,889 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 11:21:01,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:01,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1424687657, now seen corresponding path program 2 times [2024-11-07 11:21:01,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:01,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563230419] [2024-11-07 11:21:01,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:01,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:01,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:02,465 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:21:02,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:02,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563230419] [2024-11-07 11:21:02,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563230419] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:21:02,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856155181] [2024-11-07 11:21:02,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:21:02,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:02,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:21:02,468 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:21:02,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-07 11:21:02,535 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:21:02,536 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:21:02,538 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-07 11:21:02,539 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:21:02,767 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-07 11:21:02,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-11-07 11:21:02,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:21:02,783 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:21:02,935 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-07 11:21:02,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2024-11-07 11:21:02,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:21:02,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856155181] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:21:02,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:21:02,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5] total 12 [2024-11-07 11:21:02,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277035309] [2024-11-07 11:21:02,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:21:02,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-07 11:21:02,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:02,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-07 11:21:02,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-07 11:21:02,994 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:21:02,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 304 flow. Second operand has 13 states, 13 states have (on average 8.076923076923077) internal successors, (105), 13 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 11:21:02,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:02,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:21:02,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:03,307 INFO L124 PetriNetUnfolderBase]: 369/668 cut-off events. [2024-11-07 11:21:03,308 INFO L125 PetriNetUnfolderBase]: For 918/918 co-relation queries the response was YES. [2024-11-07 11:21:03,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2201 conditions, 668 events. 369/668 cut-off events. For 918/918 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2890 event pairs, 45 based on Foata normal form. 14/682 useless extension candidates. Maximal degree in co-relation 2167. Up to 388 conditions per place. [2024-11-07 11:21:03,312 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 54 selfloop transitions, 16 changer transitions 3/76 dead transitions. [2024-11-07 11:21:03,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 76 transitions, 565 flow [2024-11-07 11:21:03,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 11:21:03,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-07 11:21:03,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-11-07 11:21:03,313 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-11-07 11:21:03,313 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 304 flow. Second operand 8 states and 105 transitions. [2024-11-07 11:21:03,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 76 transitions, 565 flow [2024-11-07 11:21:03,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 76 transitions, 550 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-07 11:21:03,319 INFO L231 Difference]: Finished difference. Result has 60 places, 46 transitions, 333 flow [2024-11-07 11:21:03,320 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=333, PETRI_PLACES=60, PETRI_TRANSITIONS=46} [2024-11-07 11:21:03,320 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 34 predicate places. [2024-11-07 11:21:03,320 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 46 transitions, 333 flow [2024-11-07 11:21:03,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.076923076923077) internal successors, (105), 13 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 11:21:03,321 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:03,321 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:03,333 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 11:21:03,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:03,522 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 11:21:03,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:03,522 INFO L85 PathProgramCache]: Analyzing trace with hash -98403989, now seen corresponding path program 3 times [2024-11-07 11:21:03,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:03,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933390596] [2024-11-07 11:21:03,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:03,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:03,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:03,819 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:21:03,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:03,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933390596] [2024-11-07 11:21:03,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933390596] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:21:03,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:21:03,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 11:21:03,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731376883] [2024-11-07 11:21:03,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:21:03,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-07 11:21:03,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:03,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-07 11:21:03,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-07 11:21:03,821 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:21:03,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 46 transitions, 333 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:03,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:03,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:21:03,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:04,023 INFO L124 PetriNetUnfolderBase]: 364/663 cut-off events. [2024-11-07 11:21:04,024 INFO L125 PetriNetUnfolderBase]: For 1324/1334 co-relation queries the response was YES. [2024-11-07 11:21:04,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2255 conditions, 663 events. 364/663 cut-off events. For 1324/1334 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2875 event pairs, 131 based on Foata normal form. 9/672 useless extension candidates. Maximal degree in co-relation 2220. Up to 565 conditions per place. [2024-11-07 11:21:04,027 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 34 selfloop transitions, 14 changer transitions 10/61 dead transitions. [2024-11-07 11:21:04,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 61 transitions, 498 flow [2024-11-07 11:21:04,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 11:21:04,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 11:21:04,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-11-07 11:21:04,028 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42346938775510207 [2024-11-07 11:21:04,028 INFO L175 Difference]: Start difference. First operand has 60 places, 46 transitions, 333 flow. Second operand 7 states and 83 transitions. [2024-11-07 11:21:04,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 61 transitions, 498 flow [2024-11-07 11:21:04,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 61 transitions, 448 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-11-07 11:21:04,032 INFO L231 Difference]: Finished difference. Result has 59 places, 45 transitions, 311 flow [2024-11-07 11:21:04,032 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=311, PETRI_PLACES=59, PETRI_TRANSITIONS=45} [2024-11-07 11:21:04,032 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 33 predicate places. [2024-11-07 11:21:04,032 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 45 transitions, 311 flow [2024-11-07 11:21:04,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:04,033 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:04,033 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:04,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-07 11:21:04,033 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 11:21:04,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:04,033 INFO L85 PathProgramCache]: Analyzing trace with hash 337700793, now seen corresponding path program 3 times [2024-11-07 11:21:04,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:04,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153682576] [2024-11-07 11:21:04,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:04,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:04,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:04,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:21:04,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:04,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153682576] [2024-11-07 11:21:04,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153682576] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:21:04,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:21:04,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 11:21:04,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406072242] [2024-11-07 11:21:04,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:21:04,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-07 11:21:04,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:04,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-07 11:21:04,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-07 11:21:04,252 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:21:04,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 45 transitions, 311 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:04,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:04,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:21:04,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:04,416 INFO L124 PetriNetUnfolderBase]: 340/613 cut-off events. [2024-11-07 11:21:04,416 INFO L125 PetriNetUnfolderBase]: For 862/862 co-relation queries the response was YES. [2024-11-07 11:21:04,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2029 conditions, 613 events. 340/613 cut-off events. For 862/862 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2535 event pairs, 134 based on Foata normal form. 4/617 useless extension candidates. Maximal degree in co-relation 1996. Up to 565 conditions per place. [2024-11-07 11:21:04,419 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 37 selfloop transitions, 12 changer transitions 3/55 dead transitions. [2024-11-07 11:21:04,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 55 transitions, 437 flow [2024-11-07 11:21:04,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 11:21:04,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 11:21:04,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-11-07 11:21:04,420 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3979591836734694 [2024-11-07 11:21:04,420 INFO L175 Difference]: Start difference. First operand has 59 places, 45 transitions, 311 flow. Second operand 7 states and 78 transitions. [2024-11-07 11:21:04,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 55 transitions, 437 flow [2024-11-07 11:21:04,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 55 transitions, 398 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-11-07 11:21:04,423 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 286 flow [2024-11-07 11:21:04,423 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=286, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2024-11-07 11:21:04,425 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 31 predicate places. [2024-11-07 11:21:04,425 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 286 flow [2024-11-07 11:21:04,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:04,425 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:04,426 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:04,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-07 11:21:04,426 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 11:21:04,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:04,426 INFO L85 PathProgramCache]: Analyzing trace with hash 779947237, now seen corresponding path program 4 times [2024-11-07 11:21:04,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:04,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786978018] [2024-11-07 11:21:04,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:04,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:04,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:04,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:21:04,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:04,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786978018] [2024-11-07 11:21:04,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786978018] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:21:04,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852078648] [2024-11-07 11:21:04,718 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 11:21:04,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:04,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:21:04,720 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 11:21:04,721 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 11:21:04,783 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 11:21:04,783 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:21:04,784 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-07 11:21:04,785 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:21:04,918 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:21:04,918 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 29 treesize of output 25 [2024-11-07 11:21:04,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:21:04,952 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:21:05,025 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-07 11:21:05,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2024-11-07 11:21:05,055 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:21:05,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852078648] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:21:05,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:21:05,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 14 [2024-11-07 11:21:05,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726402191] [2024-11-07 11:21:05,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:21:05,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 11:21:05,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:05,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 11:21:05,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-11-07 11:21:05,057 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:21:05,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 286 flow. Second operand has 15 states, 15 states have (on average 7.933333333333334) internal successors, (119), 15 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:05,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:05,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:21:05,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:05,323 INFO L124 PetriNetUnfolderBase]: 424/758 cut-off events. [2024-11-07 11:21:05,323 INFO L125 PetriNetUnfolderBase]: For 1058/1058 co-relation queries the response was YES. [2024-11-07 11:21:05,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2490 conditions, 758 events. 424/758 cut-off events. For 1058/1058 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3358 event pairs, 102 based on Foata normal form. 21/779 useless extension candidates. Maximal degree in co-relation 2459. Up to 600 conditions per place. [2024-11-07 11:21:05,327 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 61 selfloop transitions, 21 changer transitions 0/85 dead transitions. [2024-11-07 11:21:05,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 85 transitions, 601 flow [2024-11-07 11:21:05,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 11:21:05,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 11:21:05,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-11-07 11:21:05,328 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42207792207792205 [2024-11-07 11:21:05,328 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 286 flow. Second operand 11 states and 130 transitions. [2024-11-07 11:21:05,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 85 transitions, 601 flow [2024-11-07 11:21:05,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 85 transitions, 577 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-07 11:21:05,332 INFO L231 Difference]: Finished difference. Result has 65 places, 53 transitions, 388 flow [2024-11-07 11:21:05,332 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=388, PETRI_PLACES=65, PETRI_TRANSITIONS=53} [2024-11-07 11:21:05,333 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 39 predicate places. [2024-11-07 11:21:05,334 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 53 transitions, 388 flow [2024-11-07 11:21:05,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.933333333333334) internal successors, (119), 15 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:05,334 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:05,334 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:05,347 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 11:21:05,538 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,SelfDestructingSolverStorable13 [2024-11-07 11:21:05,539 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 11:21:05,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:05,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1525908377, now seen corresponding path program 4 times [2024-11-07 11:21:05,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:05,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899779006] [2024-11-07 11:21:05,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:05,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:05,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:05,767 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:21:05,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:05,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899779006] [2024-11-07 11:21:05,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899779006] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:21:05,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:21:05,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 11:21:05,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761011759] [2024-11-07 11:21:05,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:21:05,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-07 11:21:05,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:05,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-07 11:21:05,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-07 11:21:05,770 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:21:05,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 53 transitions, 388 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:05,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:05,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:21:05,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:05,935 INFO L124 PetriNetUnfolderBase]: 442/788 cut-off events. [2024-11-07 11:21:05,935 INFO L125 PetriNetUnfolderBase]: For 1727/1727 co-relation queries the response was YES. [2024-11-07 11:21:05,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2877 conditions, 788 events. 442/788 cut-off events. For 1727/1727 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3514 event pairs, 151 based on Foata normal form. 12/800 useless extension candidates. Maximal degree in co-relation 2841. Up to 725 conditions per place. [2024-11-07 11:21:05,939 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 52 selfloop transitions, 13 changer transitions 0/68 dead transitions. [2024-11-07 11:21:05,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 68 transitions, 574 flow [2024-11-07 11:21:05,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 11:21:05,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 11:21:05,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-11-07 11:21:05,940 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41836734693877553 [2024-11-07 11:21:05,940 INFO L175 Difference]: Start difference. First operand has 65 places, 53 transitions, 388 flow. Second operand 7 states and 82 transitions. [2024-11-07 11:21:05,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 68 transitions, 574 flow [2024-11-07 11:21:05,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 68 transitions, 548 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-11-07 11:21:05,945 INFO L231 Difference]: Finished difference. Result has 67 places, 54 transitions, 402 flow [2024-11-07 11:21:05,946 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=402, PETRI_PLACES=67, PETRI_TRANSITIONS=54} [2024-11-07 11:21:05,946 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 41 predicate places. [2024-11-07 11:21:05,946 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 54 transitions, 402 flow [2024-11-07 11:21:05,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:05,947 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:05,947 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:05,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-07 11:21:05,947 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 11:21:05,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:05,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1300987723, now seen corresponding path program 5 times [2024-11-07 11:21:05,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:05,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404430172] [2024-11-07 11:21:05,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:05,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:05,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:06,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:21:06,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:06,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404430172] [2024-11-07 11:21:06,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404430172] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:21:06,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998351811] [2024-11-07 11:21:06,152 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 11:21:06,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:06,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:21:06,156 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 11:21:06,157 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 11:21:06,217 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:21:06,218 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:21:06,221 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-07 11:21:06,222 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:21:06,299 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:21:06,300 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 29 treesize of output 25 [2024-11-07 11:21:06,322 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:21:06,323 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:21:06,400 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-07 11:21:06,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2024-11-07 11:21:06,435 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:21:06,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998351811] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-07 11:21:06,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-07 11:21:06,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 6] total 14 [2024-11-07 11:21:06,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446402854] [2024-11-07 11:21:06,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:21:06,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 11:21:06,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:06,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 11:21:06,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-07 11:21:06,438 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:21:06,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 54 transitions, 402 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:06,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:06,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:21:06,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:06,656 INFO L124 PetriNetUnfolderBase]: 421/768 cut-off events. [2024-11-07 11:21:06,656 INFO L125 PetriNetUnfolderBase]: For 1829/1835 co-relation queries the response was YES. [2024-11-07 11:21:06,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2796 conditions, 768 events. 421/768 cut-off events. For 1829/1835 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3489 event pairs, 105 based on Foata normal form. 27/795 useless extension candidates. Maximal degree in co-relation 2759. Up to 601 conditions per place. [2024-11-07 11:21:06,670 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 55 selfloop transitions, 13 changer transitions 0/71 dead transitions. [2024-11-07 11:21:06,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 71 transitions, 599 flow [2024-11-07 11:21:06,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 11:21:06,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 11:21:06,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 79 transitions. [2024-11-07 11:21:06,671 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47023809523809523 [2024-11-07 11:21:06,671 INFO L175 Difference]: Start difference. First operand has 67 places, 54 transitions, 402 flow. Second operand 6 states and 79 transitions. [2024-11-07 11:21:06,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 71 transitions, 599 flow [2024-11-07 11:21:06,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 71 transitions, 575 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-07 11:21:06,685 INFO L231 Difference]: Finished difference. Result has 68 places, 54 transitions, 410 flow [2024-11-07 11:21:06,685 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=410, PETRI_PLACES=68, PETRI_TRANSITIONS=54} [2024-11-07 11:21:06,686 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 42 predicate places. [2024-11-07 11:21:06,686 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 54 transitions, 410 flow [2024-11-07 11:21:06,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:06,686 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:06,686 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:06,722 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 11:21:06,887 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,SelfDestructingSolverStorable15 [2024-11-07 11:21:06,889 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 11:21:06,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:06,889 INFO L85 PathProgramCache]: Analyzing trace with hash -413633599, now seen corresponding path program 5 times [2024-11-07 11:21:06,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:06,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120945750] [2024-11-07 11:21:06,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:06,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:07,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:21:07,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:07,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120945750] [2024-11-07 11:21:07,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120945750] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:21:07,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:21:07,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 11:21:07,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142607846] [2024-11-07 11:21:07,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:21:07,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-07 11:21:07,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:07,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-07 11:21:07,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-07 11:21:07,279 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:21:07,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 54 transitions, 410 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:07,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:07,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:21:07,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:07,441 INFO L124 PetriNetUnfolderBase]: 439/798 cut-off events. [2024-11-07 11:21:07,442 INFO L125 PetriNetUnfolderBase]: For 1994/2000 co-relation queries the response was YES. [2024-11-07 11:21:07,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2979 conditions, 798 events. 439/798 cut-off events. For 1994/2000 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3672 event pairs, 136 based on Foata normal form. 18/816 useless extension candidates. Maximal degree in co-relation 2941. Up to 734 conditions per place. [2024-11-07 11:21:07,447 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 50 selfloop transitions, 14 changer transitions 0/67 dead transitions. [2024-11-07 11:21:07,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 67 transitions, 593 flow [2024-11-07 11:21:07,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 11:21:07,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 11:21:07,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-11-07 11:21:07,448 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40816326530612246 [2024-11-07 11:21:07,448 INFO L175 Difference]: Start difference. First operand has 68 places, 54 transitions, 410 flow. Second operand 7 states and 80 transitions. [2024-11-07 11:21:07,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 67 transitions, 593 flow [2024-11-07 11:21:07,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 67 transitions, 571 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-07 11:21:07,452 INFO L231 Difference]: Finished difference. Result has 71 places, 55 transitions, 432 flow [2024-11-07 11:21:07,452 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=432, PETRI_PLACES=71, PETRI_TRANSITIONS=55} [2024-11-07 11:21:07,453 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 45 predicate places. [2024-11-07 11:21:07,453 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 55 transitions, 432 flow [2024-11-07 11:21:07,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:07,453 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:07,453 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:07,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-07 11:21:07,454 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 11:21:07,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:07,454 INFO L85 PathProgramCache]: Analyzing trace with hash -431005725, now seen corresponding path program 6 times [2024-11-07 11:21:07,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:07,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252040572] [2024-11-07 11:21:07,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:07,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:07,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:07,630 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:21:07,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:07,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252040572] [2024-11-07 11:21:07,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252040572] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:21:07,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:21:07,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 11:21:07,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821306527] [2024-11-07 11:21:07,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:21:07,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-07 11:21:07,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:07,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-07 11:21:07,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-07 11:21:07,632 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:21:07,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 55 transitions, 432 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:07,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:07,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:21:07,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:07,809 INFO L124 PetriNetUnfolderBase]: 396/704 cut-off events. [2024-11-07 11:21:07,809 INFO L125 PetriNetUnfolderBase]: For 2085/2091 co-relation queries the response was YES. [2024-11-07 11:21:07,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2765 conditions, 704 events. 396/704 cut-off events. For 2085/2091 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3057 event pairs, 115 based on Foata normal form. 10/714 useless extension candidates. Maximal degree in co-relation 2726. Up to 663 conditions per place. [2024-11-07 11:21:07,814 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 44 selfloop transitions, 11 changer transitions 3/61 dead transitions. [2024-11-07 11:21:07,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 61 transitions, 546 flow [2024-11-07 11:21:07,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 11:21:07,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 11:21:07,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-11-07 11:21:07,815 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37755102040816324 [2024-11-07 11:21:07,815 INFO L175 Difference]: Start difference. First operand has 71 places, 55 transitions, 432 flow. Second operand 7 states and 74 transitions. [2024-11-07 11:21:07,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 61 transitions, 546 flow [2024-11-07 11:21:07,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 61 transitions, 520 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-07 11:21:07,820 INFO L231 Difference]: Finished difference. Result has 72 places, 53 transitions, 406 flow [2024-11-07 11:21:07,820 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=406, PETRI_PLACES=72, PETRI_TRANSITIONS=53} [2024-11-07 11:21:07,821 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 46 predicate places. [2024-11-07 11:21:07,821 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 53 transitions, 406 flow [2024-11-07 11:21:07,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:07,821 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:07,821 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:07,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-07 11:21:07,821 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 11:21:07,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:07,822 INFO L85 PathProgramCache]: Analyzing trace with hash -2085142019, now seen corresponding path program 6 times [2024-11-07 11:21:07,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:07,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938932667] [2024-11-07 11:21:07,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:07,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:07,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:08,033 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:21:08,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:08,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938932667] [2024-11-07 11:21:08,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938932667] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:21:08,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128829735] [2024-11-07 11:21:08,034 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-07 11:21:08,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:08,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:21:08,037 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 11:21:08,039 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 11:21:08,107 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-07 11:21:08,107 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:21:08,108 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-07 11:21:08,109 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:21:08,196 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-07 11:21:08,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-11-07 11:21:08,204 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:21:08,204 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:21:08,274 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-07 11:21:08,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2024-11-07 11:21:08,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:21:08,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128829735] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:21:08,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:21:08,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5] total 12 [2024-11-07 11:21:08,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060469021] [2024-11-07 11:21:08,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:21:08,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-07 11:21:08,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:08,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-07 11:21:08,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-07 11:21:08,306 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:21:08,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 53 transitions, 406 flow. Second operand has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 13 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:08,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:08,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:21:08,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:08,534 INFO L124 PetriNetUnfolderBase]: 352/620 cut-off events. [2024-11-07 11:21:08,534 INFO L125 PetriNetUnfolderBase]: For 1752/1758 co-relation queries the response was YES. [2024-11-07 11:21:08,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2473 conditions, 620 events. 352/620 cut-off events. For 1752/1758 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2539 event pairs, 80 based on Foata normal form. 18/638 useless extension candidates. Maximal degree in co-relation 2434. Up to 497 conditions per place. [2024-11-07 11:21:08,538 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 51 selfloop transitions, 15 changer transitions 0/69 dead transitions. [2024-11-07 11:21:08,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 69 transitions, 611 flow [2024-11-07 11:21:08,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 11:21:08,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-07 11:21:08,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-11-07 11:21:08,539 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39732142857142855 [2024-11-07 11:21:08,539 INFO L175 Difference]: Start difference. First operand has 72 places, 53 transitions, 406 flow. Second operand 8 states and 89 transitions. [2024-11-07 11:21:08,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 69 transitions, 611 flow [2024-11-07 11:21:08,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 69 transitions, 589 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-07 11:21:08,543 INFO L231 Difference]: Finished difference. Result has 73 places, 53 transitions, 418 flow [2024-11-07 11:21:08,543 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=418, PETRI_PLACES=73, PETRI_TRANSITIONS=53} [2024-11-07 11:21:08,544 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 47 predicate places. [2024-11-07 11:21:08,544 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 53 transitions, 418 flow [2024-11-07 11:21:08,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 13 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:08,545 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:08,545 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:08,563 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-07 11:21:08,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:08,754 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 11:21:08,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:08,755 INFO L85 PathProgramCache]: Analyzing trace with hash 2105778690, now seen corresponding path program 1 times [2024-11-07 11:21:08,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:08,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278126339] [2024-11-07 11:21:08,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:08,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:08,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:08,849 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:21:08,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:08,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278126339] [2024-11-07 11:21:08,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278126339] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:21:08,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633653438] [2024-11-07 11:21:08,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:08,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:08,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:21:08,852 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 11:21:08,856 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 11:21:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:08,926 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-07 11:21:08,927 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:21:09,006 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:21:09,006 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:21:09,028 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:21:09,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633653438] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:21:09,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:21:09,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 6 [2024-11-07 11:21:09,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508976346] [2024-11-07 11:21:09,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:21:09,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 11:21:09,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:09,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 11:21:09,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-07 11:21:09,030 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:21:09,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 53 transitions, 418 flow. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:09,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:09,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:21:09,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:09,332 INFO L124 PetriNetUnfolderBase]: 758/1332 cut-off events. [2024-11-07 11:21:09,333 INFO L125 PetriNetUnfolderBase]: For 3857/3863 co-relation queries the response was YES. [2024-11-07 11:21:09,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4990 conditions, 1332 events. 758/1332 cut-off events. For 3857/3863 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6576 event pairs, 96 based on Foata normal form. 14/1346 useless extension candidates. Maximal degree in co-relation 4949. Up to 549 conditions per place. [2024-11-07 11:21:09,348 INFO L140 encePairwiseOnDemand]: 24/28 looper letters, 83 selfloop transitions, 20 changer transitions 2/108 dead transitions. [2024-11-07 11:21:09,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 108 transitions, 922 flow [2024-11-07 11:21:09,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 11:21:09,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 11:21:09,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-11-07 11:21:09,349 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5969387755102041 [2024-11-07 11:21:09,349 INFO L175 Difference]: Start difference. First operand has 73 places, 53 transitions, 418 flow. Second operand 7 states and 117 transitions. [2024-11-07 11:21:09,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 108 transitions, 922 flow [2024-11-07 11:21:09,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 108 transitions, 861 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-11-07 11:21:09,358 INFO L231 Difference]: Finished difference. Result has 74 places, 63 transitions, 512 flow [2024-11-07 11:21:09,358 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=512, PETRI_PLACES=74, PETRI_TRANSITIONS=63} [2024-11-07 11:21:09,358 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 48 predicate places. [2024-11-07 11:21:09,358 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 63 transitions, 512 flow [2024-11-07 11:21:09,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:09,358 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:09,359 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:09,376 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 11:21:09,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:09,559 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 11:21:09,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:09,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1525261836, now seen corresponding path program 2 times [2024-11-07 11:21:09,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:09,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517524066] [2024-11-07 11:21:09,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:09,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:09,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:09,622 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:21:09,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:09,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517524066] [2024-11-07 11:21:09,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517524066] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:21:09,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593454068] [2024-11-07 11:21:09,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:21:09,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:09,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:21:09,625 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 11:21:09,627 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 11:21:09,685 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:21:09,685 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:21:09,687 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-07 11:21:09,687 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:21:09,737 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:21:09,738 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:21:09,761 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 11:21:09,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593454068] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:21:09,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:21:09,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 6 [2024-11-07 11:21:09,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361226333] [2024-11-07 11:21:09,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:21:09,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 11:21:09,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:09,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 11:21:09,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-07 11:21:09,762 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:21:09,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 63 transitions, 512 flow. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:09,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:09,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:21:09,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:09,983 INFO L124 PetriNetUnfolderBase]: 1190/2084 cut-off events. [2024-11-07 11:21:09,983 INFO L125 PetriNetUnfolderBase]: For 5846/5852 co-relation queries the response was YES. [2024-11-07 11:21:09,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7776 conditions, 2084 events. 1190/2084 cut-off events. For 5846/5852 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 11395 event pairs, 314 based on Foata normal form. 14/2097 useless extension candidates. Maximal degree in co-relation 7735. Up to 1335 conditions per place. [2024-11-07 11:21:09,998 INFO L140 encePairwiseOnDemand]: 24/28 looper letters, 94 selfloop transitions, 17 changer transitions 2/116 dead transitions. [2024-11-07 11:21:09,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 116 transitions, 1032 flow [2024-11-07 11:21:09,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 11:21:09,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 11:21:10,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2024-11-07 11:21:10,000 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5816326530612245 [2024-11-07 11:21:10,000 INFO L175 Difference]: Start difference. First operand has 74 places, 63 transitions, 512 flow. Second operand 7 states and 114 transitions. [2024-11-07 11:21:10,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 116 transitions, 1032 flow [2024-11-07 11:21:10,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 116 transitions, 1003 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-11-07 11:21:10,017 INFO L231 Difference]: Finished difference. Result has 82 places, 73 transitions, 628 flow [2024-11-07 11:21:10,017 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=628, PETRI_PLACES=82, PETRI_TRANSITIONS=73} [2024-11-07 11:21:10,018 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 56 predicate places. [2024-11-07 11:21:10,018 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 73 transitions, 628 flow [2024-11-07 11:21:10,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:10,018 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:10,018 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:10,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-07 11:21:10,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:10,218 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 11:21:10,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:10,219 INFO L85 PathProgramCache]: Analyzing trace with hash -930481090, now seen corresponding path program 3 times [2024-11-07 11:21:10,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:10,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77181670] [2024-11-07 11:21:10,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:10,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:10,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:10,326 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:21:10,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:10,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77181670] [2024-11-07 11:21:10,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77181670] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:21:10,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798831526] [2024-11-07 11:21:10,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:21:10,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:10,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:21:10,332 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 11:21:10,333 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 11:21:10,404 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-07 11:21:10,405 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:21:10,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-07 11:21:10,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:21:10,593 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:21:10,593 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:21:10,868 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:21:10,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798831526] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:21:10,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:21:10,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 25 [2024-11-07 11:21:10,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879458205] [2024-11-07 11:21:10,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:21:10,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-07 11:21:10,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:10,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-07 11:21:10,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2024-11-07 11:21:10,870 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:21:10,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 73 transitions, 628 flow. Second operand has 26 states, 26 states have (on average 7.538461538461538) internal successors, (196), 26 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:10,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:10,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:21:10,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:12,515 INFO L124 PetriNetUnfolderBase]: 2343/4315 cut-off events. [2024-11-07 11:21:12,515 INFO L125 PetriNetUnfolderBase]: For 12610/12610 co-relation queries the response was YES. [2024-11-07 11:21:12,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16127 conditions, 4315 events. 2343/4315 cut-off events. For 12610/12610 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 28619 event pairs, 362 based on Foata normal form. 208/4519 useless extension candidates. Maximal degree in co-relation 14995. Up to 892 conditions per place. [2024-11-07 11:21:12,538 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 196 selfloop transitions, 93 changer transitions 95/387 dead transitions. [2024-11-07 11:21:12,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 387 transitions, 3398 flow [2024-11-07 11:21:12,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-07 11:21:12,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2024-11-07 11:21:12,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 516 transitions. [2024-11-07 11:21:12,543 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4607142857142857 [2024-11-07 11:21:12,543 INFO L175 Difference]: Start difference. First operand has 82 places, 73 transitions, 628 flow. Second operand 40 states and 516 transitions. [2024-11-07 11:21:12,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 387 transitions, 3398 flow [2024-11-07 11:21:12,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 387 transitions, 3279 flow, removed 47 selfloop flow, removed 1 redundant places. [2024-11-07 11:21:12,591 INFO L231 Difference]: Finished difference. Result has 146 places, 138 transitions, 1575 flow [2024-11-07 11:21:12,591 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=1575, PETRI_PLACES=146, PETRI_TRANSITIONS=138} [2024-11-07 11:21:12,592 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 120 predicate places. [2024-11-07 11:21:12,592 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 138 transitions, 1575 flow [2024-11-07 11:21:12,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.538461538461538) internal successors, (196), 26 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:12,592 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:12,592 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:12,623 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-07 11:21:12,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:12,793 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 11:21:12,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:12,793 INFO L85 PathProgramCache]: Analyzing trace with hash 895194908, now seen corresponding path program 4 times [2024-11-07 11:21:12,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:12,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923965621] [2024-11-07 11:21:12,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:12,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:12,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:12,852 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 11:21:12,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:12,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923965621] [2024-11-07 11:21:12,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923965621] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:21:12,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308591109] [2024-11-07 11:21:12,852 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 11:21:12,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:12,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:21:12,856 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 11:21:12,857 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 11:21:12,909 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 11:21:12,909 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:21:12,910 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-07 11:21:12,911 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:21:13,010 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 11:21:13,010 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 11:21:13,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308591109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:21:13,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 11:21:13,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 13 [2024-11-07 11:21:13,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638574957] [2024-11-07 11:21:13,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:21:13,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-07 11:21:13,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:13,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-07 11:21:13,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-07 11:21:13,012 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:21:13,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 138 transitions, 1575 flow. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:13,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:13,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:21:13,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:13,532 INFO L124 PetriNetUnfolderBase]: 2227/4153 cut-off events. [2024-11-07 11:21:13,532 INFO L125 PetriNetUnfolderBase]: For 29767/29767 co-relation queries the response was YES. [2024-11-07 11:21:13,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19404 conditions, 4153 events. 2227/4153 cut-off events. For 29767/29767 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 28550 event pairs, 319 based on Foata normal form. 4/4157 useless extension candidates. Maximal degree in co-relation 18216. Up to 1710 conditions per place. [2024-11-07 11:21:13,553 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 151 selfloop transitions, 77 changer transitions 11/242 dead transitions. [2024-11-07 11:21:13,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 242 transitions, 3086 flow [2024-11-07 11:21:13,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 11:21:13,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-07 11:21:13,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-11-07 11:21:13,554 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-11-07 11:21:13,554 INFO L175 Difference]: Start difference. First operand has 146 places, 138 transitions, 1575 flow. Second operand 10 states and 120 transitions. [2024-11-07 11:21:13,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 242 transitions, 3086 flow [2024-11-07 11:21:13,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 242 transitions, 2830 flow, removed 106 selfloop flow, removed 14 redundant places. [2024-11-07 11:21:13,605 INFO L231 Difference]: Finished difference. Result has 137 places, 158 transitions, 1861 flow [2024-11-07 11:21:13,605 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1392, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1861, PETRI_PLACES=137, PETRI_TRANSITIONS=158} [2024-11-07 11:21:13,606 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 111 predicate places. [2024-11-07 11:21:13,606 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 158 transitions, 1861 flow [2024-11-07 11:21:13,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:13,606 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:13,606 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:13,618 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 11:21:13,808 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,SelfDestructingSolverStorable22 [2024-11-07 11:21:13,809 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 11:21:13,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:13,809 INFO L85 PathProgramCache]: Analyzing trace with hash 739656916, now seen corresponding path program 5 times [2024-11-07 11:21:13,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:13,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033649759] [2024-11-07 11:21:13,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:13,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:13,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:13,868 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:21:13,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:13,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033649759] [2024-11-07 11:21:13,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033649759] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:21:13,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032313053] [2024-11-07 11:21:13,869 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 11:21:13,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:13,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:21:13,871 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 11:21:13,872 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 11:21:13,934 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-07 11:21:13,935 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:21:13,936 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-07 11:21:13,936 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:21:13,999 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:21:13,999 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:21:14,050 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:21:14,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032313053] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:21:14,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:21:14,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-11-07 11:21:14,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036106834] [2024-11-07 11:21:14,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:21:14,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-07 11:21:14,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:14,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-07 11:21:14,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2024-11-07 11:21:14,051 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:21:14,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 158 transitions, 1861 flow. Second operand has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 13 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 11:21:14,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:14,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:21:14,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:14,545 INFO L124 PetriNetUnfolderBase]: 1905/3520 cut-off events. [2024-11-07 11:21:14,546 INFO L125 PetriNetUnfolderBase]: For 22919/22919 co-relation queries the response was YES. [2024-11-07 11:21:14,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16856 conditions, 3520 events. 1905/3520 cut-off events. For 22919/22919 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 23091 event pairs, 1411 based on Foata normal form. 15/3535 useless extension candidates. Maximal degree in co-relation 16522. Up to 3356 conditions per place. [2024-11-07 11:21:14,574 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 132 selfloop transitions, 3 changer transitions 28/166 dead transitions. [2024-11-07 11:21:14,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 166 transitions, 2174 flow [2024-11-07 11:21:14,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 11:21:14,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 11:21:14,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-11-07 11:21:14,576 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4030612244897959 [2024-11-07 11:21:14,576 INFO L175 Difference]: Start difference. First operand has 137 places, 158 transitions, 1861 flow. Second operand 7 states and 79 transitions. [2024-11-07 11:21:14,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 166 transitions, 2174 flow [2024-11-07 11:21:14,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 166 transitions, 1997 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-11-07 11:21:14,649 INFO L231 Difference]: Finished difference. Result has 135 places, 138 transitions, 1457 flow [2024-11-07 11:21:14,649 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1568, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1457, PETRI_PLACES=135, PETRI_TRANSITIONS=138} [2024-11-07 11:21:14,650 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 109 predicate places. [2024-11-07 11:21:14,651 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 138 transitions, 1457 flow [2024-11-07 11:21:14,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 13 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 11:21:14,652 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:14,652 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:14,665 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 11:21:14,852 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,SelfDestructingSolverStorable23 [2024-11-07 11:21:14,853 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 11:21:14,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:14,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1465117270, now seen corresponding path program 6 times [2024-11-07 11:21:14,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:14,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199568662] [2024-11-07 11:21:14,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:14,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:14,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:14,934 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:21:14,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:14,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199568662] [2024-11-07 11:21:14,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199568662] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:21:14,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65237051] [2024-11-07 11:21:14,935 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-07 11:21:14,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:14,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:21:14,940 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 11:21:14,941 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 11:21:15,014 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-07 11:21:15,014 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:21:15,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-07 11:21:15,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:21:15,092 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:21:15,092 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:21:15,148 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:21:15,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65237051] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:21:15,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:21:15,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-07 11:21:15,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906180557] [2024-11-07 11:21:15,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:21:15,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 11:21:15,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:15,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 11:21:15,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2024-11-07 11:21:15,149 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:21:15,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 138 transitions, 1457 flow. Second operand has 15 states, 15 states have (on average 8.133333333333333) internal successors, (122), 15 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:15,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:15,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:21:15,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:15,556 INFO L124 PetriNetUnfolderBase]: 1748/3204 cut-off events. [2024-11-07 11:21:15,557 INFO L125 PetriNetUnfolderBase]: For 18874/18874 co-relation queries the response was YES. [2024-11-07 11:21:15,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14578 conditions, 3204 events. 1748/3204 cut-off events. For 18874/18874 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 20408 event pairs, 711 based on Foata normal form. 10/3214 useless extension candidates. Maximal degree in co-relation 14522. Up to 2813 conditions per place. [2024-11-07 11:21:15,572 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 115 selfloop transitions, 16 changer transitions 27/161 dead transitions. [2024-11-07 11:21:15,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 161 transitions, 1897 flow [2024-11-07 11:21:15,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 11:21:15,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-07 11:21:15,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-11-07 11:21:15,573 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41517857142857145 [2024-11-07 11:21:15,573 INFO L175 Difference]: Start difference. First operand has 135 places, 138 transitions, 1457 flow. Second operand 8 states and 93 transitions. [2024-11-07 11:21:15,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 161 transitions, 1897 flow [2024-11-07 11:21:15,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 161 transitions, 1873 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-11-07 11:21:15,612 INFO L231 Difference]: Finished difference. Result has 126 places, 125 transitions, 1304 flow [2024-11-07 11:21:15,612 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1399, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1304, PETRI_PLACES=126, PETRI_TRANSITIONS=125} [2024-11-07 11:21:15,613 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 100 predicate places. [2024-11-07 11:21:15,613 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 125 transitions, 1304 flow [2024-11-07 11:21:15,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.133333333333333) internal successors, (122), 15 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:15,613 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:15,613 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:15,629 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 11:21:15,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:15,817 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 11:21:15,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:15,818 INFO L85 PathProgramCache]: Analyzing trace with hash 278839278, now seen corresponding path program 7 times [2024-11-07 11:21:15,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:15,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135811711] [2024-11-07 11:21:15,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:15,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:15,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:16,019 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 11:21:16,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:16,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135811711] [2024-11-07 11:21:16,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135811711] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:21:16,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36246431] [2024-11-07 11:21:16,019 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-07 11:21:16,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:16,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:21:16,021 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 11:21:16,022 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 11:21:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:16,095 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-07 11:21:16,096 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:21:16,247 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 11:21:16,247 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:21:16,378 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 11:21:16,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36246431] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:21:16,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:21:16,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-07 11:21:16,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104769836] [2024-11-07 11:21:16,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:21:16,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-07 11:21:16,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:16,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-07 11:21:16,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2024-11-07 11:21:16,379 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:21:16,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 125 transitions, 1304 flow. Second operand has 22 states, 22 states have (on average 7.681818181818182) internal successors, (169), 22 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:16,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:16,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:21:16,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:16,829 INFO L124 PetriNetUnfolderBase]: 1729/3139 cut-off events. [2024-11-07 11:21:16,829 INFO L125 PetriNetUnfolderBase]: For 18520/18524 co-relation queries the response was YES. [2024-11-07 11:21:16,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14364 conditions, 3139 events. 1729/3139 cut-off events. For 18520/18524 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 19713 event pairs, 388 based on Foata normal form. 79/3218 useless extension candidates. Maximal degree in co-relation 14302. Up to 1182 conditions per place. [2024-11-07 11:21:16,844 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 116 selfloop transitions, 45 changer transitions 0/164 dead transitions. [2024-11-07 11:21:16,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 164 transitions, 1993 flow [2024-11-07 11:21:16,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 11:21:16,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 11:21:16,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-11-07 11:21:16,845 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37012987012987014 [2024-11-07 11:21:16,845 INFO L175 Difference]: Start difference. First operand has 126 places, 125 transitions, 1304 flow. Second operand 11 states and 114 transitions. [2024-11-07 11:21:16,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 164 transitions, 1993 flow [2024-11-07 11:21:16,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 164 transitions, 1942 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-11-07 11:21:16,884 INFO L231 Difference]: Finished difference. Result has 128 places, 122 transitions, 1358 flow [2024-11-07 11:21:16,885 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1171, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1358, PETRI_PLACES=128, PETRI_TRANSITIONS=122} [2024-11-07 11:21:16,885 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 102 predicate places. [2024-11-07 11:21:16,885 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 122 transitions, 1358 flow [2024-11-07 11:21:16,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.681818181818182) internal successors, (169), 22 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:16,886 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:16,886 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:16,899 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 11:21:17,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:17,087 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:21:17,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:17,088 INFO L85 PathProgramCache]: Analyzing trace with hash -32640620, now seen corresponding path program 8 times [2024-11-07 11:21:17,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:17,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930149220] [2024-11-07 11:21:17,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:17,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:17,216 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 11:21:17,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:17,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930149220] [2024-11-07 11:21:17,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930149220] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:21:17,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5372294] [2024-11-07 11:21:17,217 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:21:17,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:17,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:21:17,222 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 11:21:17,225 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 11:21:17,329 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:21:17,329 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:21:17,330 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-07 11:21:17,331 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:21:17,463 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 11:21:17,463 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:21:17,649 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 11:21:17,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5372294] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:21:17,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:21:17,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-07 11:21:17,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780787146] [2024-11-07 11:21:17,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:21:17,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-07 11:21:17,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:17,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-07 11:21:17,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2024-11-07 11:21:17,661 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:21:17,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 122 transitions, 1358 flow. Second operand has 22 states, 22 states have (on average 7.181818181818182) internal successors, (158), 22 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:17,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:17,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:21:17,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:18,139 INFO L124 PetriNetUnfolderBase]: 1950/3544 cut-off events. [2024-11-07 11:21:18,140 INFO L125 PetriNetUnfolderBase]: For 23116/23120 co-relation queries the response was YES. [2024-11-07 11:21:18,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17038 conditions, 3544 events. 1950/3544 cut-off events. For 23116/23120 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 22384 event pairs, 592 based on Foata normal form. 66/3610 useless extension candidates. Maximal degree in co-relation 16974. Up to 1236 conditions per place. [2024-11-07 11:21:18,159 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 124 selfloop transitions, 53 changer transitions 0/180 dead transitions. [2024-11-07 11:21:18,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 180 transitions, 2303 flow [2024-11-07 11:21:18,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 11:21:18,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 11:21:18,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-11-07 11:21:18,160 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-11-07 11:21:18,161 INFO L175 Difference]: Start difference. First operand has 128 places, 122 transitions, 1358 flow. Second operand 11 states and 119 transitions. [2024-11-07 11:21:18,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 180 transitions, 2303 flow [2024-11-07 11:21:18,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 180 transitions, 2240 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-11-07 11:21:18,273 INFO L231 Difference]: Finished difference. Result has 131 places, 131 transitions, 1619 flow [2024-11-07 11:21:18,274 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1295, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1619, PETRI_PLACES=131, PETRI_TRANSITIONS=131} [2024-11-07 11:21:18,274 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 105 predicate places. [2024-11-07 11:21:18,274 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 131 transitions, 1619 flow [2024-11-07 11:21:18,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.181818181818182) internal successors, (158), 22 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:18,274 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:18,274 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:18,287 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-07 11:21:18,475 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,SelfDestructingSolverStorable26 [2024-11-07 11:21:18,475 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:21:18,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:18,475 INFO L85 PathProgramCache]: Analyzing trace with hash 555207431, now seen corresponding path program 1 times [2024-11-07 11:21:18,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:18,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438919638] [2024-11-07 11:21:18,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:18,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:18,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:18,873 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:21:18,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:18,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438919638] [2024-11-07 11:21:18,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438919638] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:21:18,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250299577] [2024-11-07 11:21:18,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:18,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:18,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:21:18,877 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 11:21:18,878 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 11:21:18,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:18,949 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-07 11:21:18,950 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:21:19,039 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-07 11:21:19,040 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 35 treesize of output 20 [2024-11-07 11:21:19,042 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 11:21:19,042 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:21:19,136 INFO L349 Elim1Store]: treesize reduction 30, result has 63.9 percent of original size [2024-11-07 11:21:19,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 60 [2024-11-07 11:21:19,244 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 11:21:19,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250299577] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:21:19,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:21:19,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 20 [2024-11-07 11:21:19,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737961059] [2024-11-07 11:21:19,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:21:19,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-07 11:21:19,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:19,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-07 11:21:19,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2024-11-07 11:21:19,245 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:21:19,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 131 transitions, 1619 flow. Second operand has 21 states, 21 states have (on average 7.761904761904762) internal successors, (163), 21 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:19,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:19,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:21:19,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:20,244 INFO L124 PetriNetUnfolderBase]: 1990/3637 cut-off events. [2024-11-07 11:21:20,244 INFO L125 PetriNetUnfolderBase]: For 24313/24317 co-relation queries the response was YES. [2024-11-07 11:21:20,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17821 conditions, 3637 events. 1990/3637 cut-off events. For 24313/24317 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 23265 event pairs, 673 based on Foata normal form. 14/3651 useless extension candidates. Maximal degree in co-relation 17755. Up to 2583 conditions per place. [2024-11-07 11:21:20,273 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 141 selfloop transitions, 42 changer transitions 34/220 dead transitions. [2024-11-07 11:21:20,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 220 transitions, 2724 flow [2024-11-07 11:21:20,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-07 11:21:20,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-07 11:21:20,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 204 transitions. [2024-11-07 11:21:20,274 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-11-07 11:21:20,274 INFO L175 Difference]: Start difference. First operand has 131 places, 131 transitions, 1619 flow. Second operand 17 states and 204 transitions. [2024-11-07 11:21:20,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 220 transitions, 2724 flow [2024-11-07 11:21:20,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 220 transitions, 2692 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-11-07 11:21:20,342 INFO L231 Difference]: Finished difference. Result has 147 places, 136 transitions, 1792 flow [2024-11-07 11:21:20,343 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1589, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1792, PETRI_PLACES=147, PETRI_TRANSITIONS=136} [2024-11-07 11:21:20,343 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 121 predicate places. [2024-11-07 11:21:20,343 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 136 transitions, 1792 flow [2024-11-07 11:21:20,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.761904761904762) internal successors, (163), 21 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:20,343 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:20,343 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:20,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-07 11:21:20,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-07 11:21:20,544 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:21:20,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:20,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1808304955, now seen corresponding path program 1 times [2024-11-07 11:21:20,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:20,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918199490] [2024-11-07 11:21:20,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:20,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:20,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:20,860 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:21:20,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:20,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918199490] [2024-11-07 11:21:20,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918199490] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:21:20,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799260745] [2024-11-07 11:21:20,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:20,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:20,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:21:20,863 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 11:21:20,864 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 11:21:20,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:20,939 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-07 11:21:20,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:21:21,092 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-07 11:21:21,093 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 34 treesize of output 10 [2024-11-07 11:21:21,098 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 11:21:21,099 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:21:21,184 INFO L349 Elim1Store]: treesize reduction 30, result has 63.9 percent of original size [2024-11-07 11:21:21,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 60 [2024-11-07 11:21:21,239 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 11:21:21,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799260745] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:21:21,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:21:21,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 20 [2024-11-07 11:21:21,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386433509] [2024-11-07 11:21:21,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:21:21,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-07 11:21:21,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:21,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-07 11:21:21,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2024-11-07 11:21:21,241 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:21:21,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 136 transitions, 1792 flow. Second operand has 21 states, 21 states have (on average 7.857142857142857) internal successors, (165), 21 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:21,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:21,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:21:21,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:22,255 INFO L124 PetriNetUnfolderBase]: 2282/4156 cut-off events. [2024-11-07 11:21:22,255 INFO L125 PetriNetUnfolderBase]: For 35223/35227 co-relation queries the response was YES. [2024-11-07 11:21:22,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21879 conditions, 4156 events. 2282/4156 cut-off events. For 35223/35227 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 27106 event pairs, 553 based on Foata normal form. 46/4202 useless extension candidates. Maximal degree in co-relation 21805. Up to 2361 conditions per place. [2024-11-07 11:21:22,273 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 186 selfloop transitions, 58 changer transitions 1/248 dead transitions. [2024-11-07 11:21:22,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 248 transitions, 3410 flow [2024-11-07 11:21:22,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-07 11:21:22,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-07 11:21:22,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 229 transitions. [2024-11-07 11:21:22,274 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45436507936507936 [2024-11-07 11:21:22,274 INFO L175 Difference]: Start difference. First operand has 147 places, 136 transitions, 1792 flow. Second operand 18 states and 229 transitions. [2024-11-07 11:21:22,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 248 transitions, 3410 flow [2024-11-07 11:21:22,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 248 transitions, 3280 flow, removed 24 selfloop flow, removed 14 redundant places. [2024-11-07 11:21:22,333 INFO L231 Difference]: Finished difference. Result has 149 places, 146 transitions, 1973 flow [2024-11-07 11:21:22,333 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1680, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1973, PETRI_PLACES=149, PETRI_TRANSITIONS=146} [2024-11-07 11:21:22,333 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 123 predicate places. [2024-11-07 11:21:22,333 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 146 transitions, 1973 flow [2024-11-07 11:21:22,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.857142857142857) internal successors, (165), 21 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:22,334 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:22,334 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:22,346 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 11:21:22,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-07 11:21:22,534 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:21:22,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:22,535 INFO L85 PathProgramCache]: Analyzing trace with hash 2104518837, now seen corresponding path program 2 times [2024-11-07 11:21:22,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:22,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261744088] [2024-11-07 11:21:22,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:22,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:22,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:22,908 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:21:22,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:22,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261744088] [2024-11-07 11:21:22,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261744088] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:21:22,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006607388] [2024-11-07 11:21:22,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:21:22,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:22,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:21:22,911 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 11:21:22,913 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 11:21:22,985 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:21:22,985 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:21:22,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-07 11:21:22,987 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:21:23,305 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:21:23,306 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 29 treesize of output 21 [2024-11-07 11:21:23,315 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 11:21:23,315 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:21:23,472 INFO L349 Elim1Store]: treesize reduction 30, result has 63.9 percent of original size [2024-11-07 11:21:23,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 60 [2024-11-07 11:21:23,511 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 11:21:23,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006607388] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:21:23,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:21:23,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 7] total 21 [2024-11-07 11:21:23,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678427840] [2024-11-07 11:21:23,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:21:23,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-07 11:21:23,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:23,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-07 11:21:23,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2024-11-07 11:21:23,516 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:21:23,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 146 transitions, 1973 flow. Second operand has 22 states, 22 states have (on average 7.5) internal successors, (165), 22 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:23,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:23,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:21:23,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:24,624 INFO L124 PetriNetUnfolderBase]: 2661/4848 cut-off events. [2024-11-07 11:21:24,625 INFO L125 PetriNetUnfolderBase]: For 44528/44528 co-relation queries the response was YES. [2024-11-07 11:21:24,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26004 conditions, 4848 events. 2661/4848 cut-off events. For 44528/44528 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 32637 event pairs, 819 based on Foata normal form. 30/4878 useless extension candidates. Maximal degree in co-relation 25931. Up to 3267 conditions per place. [2024-11-07 11:21:24,650 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 176 selfloop transitions, 82 changer transitions 8/269 dead transitions. [2024-11-07 11:21:24,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 269 transitions, 3651 flow [2024-11-07 11:21:24,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-07 11:21:24,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-07 11:21:24,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 256 transitions. [2024-11-07 11:21:24,653 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43537414965986393 [2024-11-07 11:21:24,653 INFO L175 Difference]: Start difference. First operand has 149 places, 146 transitions, 1973 flow. Second operand 21 states and 256 transitions. [2024-11-07 11:21:24,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 269 transitions, 3651 flow [2024-11-07 11:21:24,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 269 transitions, 3535 flow, removed 11 selfloop flow, removed 11 redundant places. [2024-11-07 11:21:24,741 INFO L231 Difference]: Finished difference. Result has 166 places, 179 transitions, 2669 flow [2024-11-07 11:21:24,741 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1870, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2669, PETRI_PLACES=166, PETRI_TRANSITIONS=179} [2024-11-07 11:21:24,742 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 140 predicate places. [2024-11-07 11:21:24,742 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 179 transitions, 2669 flow [2024-11-07 11:21:24,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.5) internal successors, (165), 22 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:24,742 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:24,742 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:24,755 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-07 11:21:24,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:24,943 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:21:24,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:24,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1741214893, now seen corresponding path program 3 times [2024-11-07 11:21:24,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:24,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083312152] [2024-11-07 11:21:24,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:24,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:24,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:25,182 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:21:25,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:25,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083312152] [2024-11-07 11:21:25,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083312152] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:21:25,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848736428] [2024-11-07 11:21:25,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:21:25,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:25,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:21:25,184 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 11:21:25,185 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 11:21:25,288 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-07 11:21:25,288 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:21:25,289 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-07 11:21:25,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:21:25,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-07 11:21:25,353 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 11:21:25,381 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 11:21:25,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-07 11:21:25,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-07 11:21:25,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-07 11:21:25,564 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:21:25,564 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 29 treesize of output 21 [2024-11-07 11:21:25,583 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:21:25,583 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:21:26,006 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:21:26,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 66 [2024-11-07 11:21:26,069 INFO L349 Elim1Store]: treesize reduction 28, result has 61.6 percent of original size [2024-11-07 11:21:26,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 208 treesize of output 184 [2024-11-07 11:21:26,083 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-07 11:21:26,085 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-07 11:21:26,135 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:21:26,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 140 treesize of output 132 [2024-11-07 11:21:26,515 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 2 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:21:26,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848736428] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:21:26,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:21:26,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 11] total 31 [2024-11-07 11:21:26,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092448293] [2024-11-07 11:21:26,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:21:26,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-07 11:21:26,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:26,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-07 11:21:26,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=814, Unknown=8, NotChecked=0, Total=992 [2024-11-07 11:21:26,516 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:21:26,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 179 transitions, 2669 flow. Second operand has 32 states, 32 states have (on average 6.875) internal successors, (220), 32 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:26,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:26,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:21:26,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:28,197 INFO L124 PetriNetUnfolderBase]: 2910/5339 cut-off events. [2024-11-07 11:21:28,197 INFO L125 PetriNetUnfolderBase]: For 74909/74909 co-relation queries the response was YES. [2024-11-07 11:21:28,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31946 conditions, 5339 events. 2910/5339 cut-off events. For 74909/74909 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 36997 event pairs, 1087 based on Foata normal form. 48/5387 useless extension candidates. Maximal degree in co-relation 31864. Up to 4460 conditions per place. [2024-11-07 11:21:28,241 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 201 selfloop transitions, 62 changer transitions 5/271 dead transitions. [2024-11-07 11:21:28,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 271 transitions, 4063 flow [2024-11-07 11:21:28,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-07 11:21:28,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-07 11:21:28,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 233 transitions. [2024-11-07 11:21:28,242 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4160714285714286 [2024-11-07 11:21:28,242 INFO L175 Difference]: Start difference. First operand has 166 places, 179 transitions, 2669 flow. Second operand 20 states and 233 transitions. [2024-11-07 11:21:28,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 271 transitions, 4063 flow [2024-11-07 11:21:28,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 271 transitions, 3740 flow, removed 127 selfloop flow, removed 11 redundant places. [2024-11-07 11:21:28,426 INFO L231 Difference]: Finished difference. Result has 179 places, 196 transitions, 2924 flow [2024-11-07 11:21:28,426 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=2452, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2924, PETRI_PLACES=179, PETRI_TRANSITIONS=196} [2024-11-07 11:21:28,426 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 153 predicate places. [2024-11-07 11:21:28,426 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 196 transitions, 2924 flow [2024-11-07 11:21:28,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.875) internal successors, (220), 32 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:28,427 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:28,427 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:28,440 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 11:21:28,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:28,629 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:21:28,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:28,629 INFO L85 PathProgramCache]: Analyzing trace with hash -508949035, now seen corresponding path program 4 times [2024-11-07 11:21:28,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:28,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031398506] [2024-11-07 11:21:28,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:28,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:28,905 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:21:28,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:28,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031398506] [2024-11-07 11:21:28,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031398506] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:21:28,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123600363] [2024-11-07 11:21:28,907 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 11:21:28,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:28,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:21:28,912 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 11:21:28,913 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 11:21:28,990 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 11:21:28,990 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:21:28,992 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-07 11:21:28,993 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:21:29,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-07 11:21:29,321 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-07 11:21:29,322 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 31 treesize of output 20 [2024-11-07 11:21:29,324 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:21:29,324 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:21:29,540 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:21:29,540 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 168 treesize of output 164 [2024-11-07 11:21:29,551 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-07 11:21:29,551 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 50 treesize of output 39 [2024-11-07 11:21:29,612 INFO L349 Elim1Store]: treesize reduction 13, result has 80.0 percent of original size [2024-11-07 11:21:29,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 195 treesize of output 190 [2024-11-07 11:21:29,825 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 11:21:29,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123600363] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:21:29,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:21:29,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 25 [2024-11-07 11:21:29,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999905132] [2024-11-07 11:21:29,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:21:29,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-07 11:21:29,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:29,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-07 11:21:29,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2024-11-07 11:21:29,827 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:21:29,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 196 transitions, 2924 flow. Second operand has 26 states, 26 states have (on average 7.384615384615385) internal successors, (192), 26 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:29,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:29,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:21:29,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:30,973 INFO L124 PetriNetUnfolderBase]: 2755/5022 cut-off events. [2024-11-07 11:21:30,974 INFO L125 PetriNetUnfolderBase]: For 65732/65732 co-relation queries the response was YES. [2024-11-07 11:21:30,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29594 conditions, 5022 events. 2755/5022 cut-off events. For 65732/65732 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 34086 event pairs, 1028 based on Foata normal form. 15/5037 useless extension candidates. Maximal degree in co-relation 29506. Up to 4531 conditions per place. [2024-11-07 11:21:31,013 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 192 selfloop transitions, 46 changer transitions 30/271 dead transitions. [2024-11-07 11:21:31,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 271 transitions, 3939 flow [2024-11-07 11:21:31,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-07 11:21:31,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-07 11:21:31,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 240 transitions. [2024-11-07 11:21:31,014 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40816326530612246 [2024-11-07 11:21:31,014 INFO L175 Difference]: Start difference. First operand has 179 places, 196 transitions, 2924 flow. Second operand 21 states and 240 transitions. [2024-11-07 11:21:31,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 271 transitions, 3939 flow [2024-11-07 11:21:31,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 271 transitions, 3842 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-11-07 11:21:31,153 INFO L231 Difference]: Finished difference. Result has 193 places, 195 transitions, 2948 flow [2024-11-07 11:21:31,153 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=2809, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2948, PETRI_PLACES=193, PETRI_TRANSITIONS=195} [2024-11-07 11:21:31,153 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 167 predicate places. [2024-11-07 11:21:31,154 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 195 transitions, 2948 flow [2024-11-07 11:21:31,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.384615384615385) internal successors, (192), 26 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:31,154 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:31,157 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:31,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-07 11:21:31,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:31,358 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:21:31,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:31,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1128017449, now seen corresponding path program 2 times [2024-11-07 11:21:31,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:31,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857679526] [2024-11-07 11:21:31,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:31,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:31,609 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:21:31,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:31,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857679526] [2024-11-07 11:21:31,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857679526] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:21:31,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438649267] [2024-11-07 11:21:31,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:21:31,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:31,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:21:31,612 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:21:31,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-07 11:21:31,692 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:21:31,692 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:21:31,693 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-07 11:21:31,694 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:21:31,853 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:21:31,853 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 29 treesize of output 21 [2024-11-07 11:21:31,859 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 11:21:31,859 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:21:31,948 INFO L349 Elim1Store]: treesize reduction 30, result has 63.9 percent of original size [2024-11-07 11:21:31,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 60 [2024-11-07 11:21:31,988 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 11:21:31,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438649267] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:21:31,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:21:31,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 7] total 21 [2024-11-07 11:21:31,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199001768] [2024-11-07 11:21:31,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:21:31,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-07 11:21:31,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:31,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-07 11:21:31,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2024-11-07 11:21:31,990 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:21:31,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 195 transitions, 2948 flow. Second operand has 22 states, 22 states have (on average 7.5) internal successors, (165), 22 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:31,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:31,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:21:31,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:33,153 INFO L124 PetriNetUnfolderBase]: 2964/5391 cut-off events. [2024-11-07 11:21:33,154 INFO L125 PetriNetUnfolderBase]: For 75048/75048 co-relation queries the response was YES. [2024-11-07 11:21:33,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32091 conditions, 5391 events. 2964/5391 cut-off events. For 75048/75048 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 36865 event pairs, 899 based on Foata normal form. 16/5407 useless extension candidates. Maximal degree in co-relation 31998. Up to 3970 conditions per place. [2024-11-07 11:21:33,199 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 210 selfloop transitions, 100 changer transitions 12/325 dead transitions. [2024-11-07 11:21:33,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 325 transitions, 4849 flow [2024-11-07 11:21:33,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-07 11:21:33,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-07 11:21:33,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 307 transitions. [2024-11-07 11:21:33,201 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39158163265306123 [2024-11-07 11:21:33,201 INFO L175 Difference]: Start difference. First operand has 193 places, 195 transitions, 2948 flow. Second operand 28 states and 307 transitions. [2024-11-07 11:21:33,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 325 transitions, 4849 flow [2024-11-07 11:21:33,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 325 transitions, 4712 flow, removed 27 selfloop flow, removed 16 redundant places. [2024-11-07 11:21:33,438 INFO L231 Difference]: Finished difference. Result has 204 places, 221 transitions, 3615 flow [2024-11-07 11:21:33,438 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=2794, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=3615, PETRI_PLACES=204, PETRI_TRANSITIONS=221} [2024-11-07 11:21:33,439 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 178 predicate places. [2024-11-07 11:21:33,439 INFO L471 AbstractCegarLoop]: Abstraction has has 204 places, 221 transitions, 3615 flow [2024-11-07 11:21:33,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.5) internal successors, (165), 22 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:33,439 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:33,439 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:33,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-07 11:21:33,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:33,647 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:21:33,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:33,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1980845097, now seen corresponding path program 3 times [2024-11-07 11:21:33,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:33,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277207734] [2024-11-07 11:21:33,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:33,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:33,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:34,032 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:21:34,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:34,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277207734] [2024-11-07 11:21:34,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277207734] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:21:34,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270045371] [2024-11-07 11:21:34,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:21:34,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:34,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:21:34,036 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:21:34,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-07 11:21:34,157 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-07 11:21:34,157 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:21:34,158 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-07 11:21:34,159 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:21:34,216 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 11:21:34,370 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:21:34,370 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 29 treesize of output 21 [2024-11-07 11:21:34,377 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:21:34,377 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:21:34,559 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:21:34,560 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 168 treesize of output 164 [2024-11-07 11:21:34,570 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-07 11:21:34,571 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 50 treesize of output 39 [2024-11-07 11:21:34,709 INFO L349 Elim1Store]: treesize reduction 13, result has 80.0 percent of original size [2024-11-07 11:21:34,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 190 treesize of output 185 [2024-11-07 11:21:34,871 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 11:21:34,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270045371] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:21:34,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:21:34,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 9] total 25 [2024-11-07 11:21:34,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223459871] [2024-11-07 11:21:34,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:21:34,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-07 11:21:34,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:34,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-07 11:21:34,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2024-11-07 11:21:34,873 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:21:34,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 221 transitions, 3615 flow. Second operand has 26 states, 26 states have (on average 7.1923076923076925) internal successors, (187), 26 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:34,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:34,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:21:34,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:36,984 INFO L124 PetriNetUnfolderBase]: 3133/5693 cut-off events. [2024-11-07 11:21:36,985 INFO L125 PetriNetUnfolderBase]: For 96780/96780 co-relation queries the response was YES. [2024-11-07 11:21:37,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35733 conditions, 5693 events. 3133/5693 cut-off events. For 96780/96780 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 39305 event pairs, 1067 based on Foata normal form. 70/5763 useless extension candidates. Maximal degree in co-relation 35637. Up to 4830 conditions per place. [2024-11-07 11:21:37,053 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 269 selfloop transitions, 92 changer transitions 6/370 dead transitions. [2024-11-07 11:21:37,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 370 transitions, 5771 flow [2024-11-07 11:21:37,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-07 11:21:37,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2024-11-07 11:21:37,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 382 transitions. [2024-11-07 11:21:37,055 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38979591836734695 [2024-11-07 11:21:37,055 INFO L175 Difference]: Start difference. First operand has 204 places, 221 transitions, 3615 flow. Second operand 35 states and 382 transitions. [2024-11-07 11:21:37,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 370 transitions, 5771 flow [2024-11-07 11:21:37,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 370 transitions, 5454 flow, removed 102 selfloop flow, removed 17 redundant places. [2024-11-07 11:21:37,456 INFO L231 Difference]: Finished difference. Result has 228 places, 251 transitions, 4209 flow [2024-11-07 11:21:37,456 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=3417, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4209, PETRI_PLACES=228, PETRI_TRANSITIONS=251} [2024-11-07 11:21:37,457 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 202 predicate places. [2024-11-07 11:21:37,457 INFO L471 AbstractCegarLoop]: Abstraction has has 228 places, 251 transitions, 4209 flow [2024-11-07 11:21:37,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.1923076923076925) internal successors, (187), 26 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:37,457 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:37,457 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:37,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-07 11:21:37,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-07 11:21:37,658 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:21:37,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:37,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1833896661, now seen corresponding path program 4 times [2024-11-07 11:21:37,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:37,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756296906] [2024-11-07 11:21:37,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:37,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:37,897 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:21:37,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:37,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756296906] [2024-11-07 11:21:37,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756296906] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:21:37,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903636661] [2024-11-07 11:21:37,897 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 11:21:37,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:37,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:21:37,899 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:21:37,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-07 11:21:37,982 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 11:21:37,982 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:21:37,984 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-07 11:21:37,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:21:38,084 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-07 11:21:38,084 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 34 treesize of output 10 [2024-11-07 11:21:38,086 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 11:21:38,086 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:21:38,175 INFO L349 Elim1Store]: treesize reduction 30, result has 63.9 percent of original size [2024-11-07 11:21:38,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 60 [2024-11-07 11:21:38,218 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 11:21:38,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903636661] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:21:38,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:21:38,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 20 [2024-11-07 11:21:38,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627462219] [2024-11-07 11:21:38,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:21:38,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-07 11:21:38,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:38,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-07 11:21:38,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2024-11-07 11:21:38,219 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:21:38,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 251 transitions, 4209 flow. Second operand has 21 states, 21 states have (on average 7.9523809523809526) internal successors, (167), 21 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:38,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:38,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:21:38,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:39,856 INFO L124 PetriNetUnfolderBase]: 3309/5993 cut-off events. [2024-11-07 11:21:39,857 INFO L125 PetriNetUnfolderBase]: For 117482/117482 co-relation queries the response was YES. [2024-11-07 11:21:39,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38857 conditions, 5993 events. 3309/5993 cut-off events. For 117482/117482 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 41501 event pairs, 708 based on Foata normal form. 112/6105 useless extension candidates. Maximal degree in co-relation 38753. Up to 3556 conditions per place. [2024-11-07 11:21:39,922 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 259 selfloop transitions, 174 changer transitions 9/445 dead transitions. [2024-11-07 11:21:39,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 445 transitions, 7320 flow [2024-11-07 11:21:39,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-07 11:21:39,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2024-11-07 11:21:39,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 432 transitions. [2024-11-07 11:21:39,924 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-11-07 11:21:39,924 INFO L175 Difference]: Start difference. First operand has 228 places, 251 transitions, 4209 flow. Second operand 36 states and 432 transitions. [2024-11-07 11:21:39,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 445 transitions, 7320 flow [2024-11-07 11:21:40,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 445 transitions, 7147 flow, removed 28 selfloop flow, removed 21 redundant places. [2024-11-07 11:21:40,190 INFO L231 Difference]: Finished difference. Result has 247 places, 294 transitions, 5371 flow [2024-11-07 11:21:40,191 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=4027, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=5371, PETRI_PLACES=247, PETRI_TRANSITIONS=294} [2024-11-07 11:21:40,191 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 221 predicate places. [2024-11-07 11:21:40,191 INFO L471 AbstractCegarLoop]: Abstraction has has 247 places, 294 transitions, 5371 flow [2024-11-07 11:21:40,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.9523809523809526) internal successors, (167), 21 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:40,192 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:40,192 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:40,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-07 11:21:40,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-07 11:21:40,393 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:21:40,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:40,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1535972049, now seen corresponding path program 5 times [2024-11-07 11:21:40,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:40,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498282146] [2024-11-07 11:21:40,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:40,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:40,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:40,771 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:21:40,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:40,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498282146] [2024-11-07 11:21:40,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498282146] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:21:40,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355999433] [2024-11-07 11:21:40,771 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 11:21:40,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:40,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:21:40,773 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:21:40,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-07 11:21:40,856 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:21:40,856 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:21:40,857 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-07 11:21:40,858 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:21:40,934 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:21:40,935 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 37 treesize of output 25 [2024-11-07 11:21:40,940 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 11:21:40,940 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:21:41,011 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-07 11:21:41,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2024-11-07 11:21:41,052 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 11:21:41,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355999433] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:21:41,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:21:41,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 6] total 18 [2024-11-07 11:21:41,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654444138] [2024-11-07 11:21:41,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:21:41,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-07 11:21:41,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:41,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-07 11:21:41,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2024-11-07 11:21:41,053 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:21:41,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 294 transitions, 5371 flow. Second operand has 19 states, 19 states have (on average 7.894736842105263) internal successors, (150), 19 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:41,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:41,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:21:41,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:42,498 INFO L124 PetriNetUnfolderBase]: 3281/5948 cut-off events. [2024-11-07 11:21:42,498 INFO L125 PetriNetUnfolderBase]: For 148143/148143 co-relation queries the response was YES. [2024-11-07 11:21:42,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41442 conditions, 5948 events. 3281/5948 cut-off events. For 148143/148143 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 40698 event pairs, 993 based on Foata normal form. 48/5996 useless extension candidates. Maximal degree in co-relation 41331. Up to 4503 conditions per place. [2024-11-07 11:21:42,554 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 258 selfloop transitions, 99 changer transitions 5/365 dead transitions. [2024-11-07 11:21:42,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 365 transitions, 6857 flow [2024-11-07 11:21:42,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-07 11:21:42,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-07 11:21:42,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 217 transitions. [2024-11-07 11:21:42,557 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-11-07 11:21:42,557 INFO L175 Difference]: Start difference. First operand has 247 places, 294 transitions, 5371 flow. Second operand 18 states and 217 transitions. [2024-11-07 11:21:42,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 365 transitions, 6857 flow [2024-11-07 11:21:43,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 365 transitions, 6371 flow, removed 104 selfloop flow, removed 20 redundant places. [2024-11-07 11:21:43,080 INFO L231 Difference]: Finished difference. Result has 245 places, 301 transitions, 5281 flow [2024-11-07 11:21:43,081 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=4918, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5281, PETRI_PLACES=245, PETRI_TRANSITIONS=301} [2024-11-07 11:21:43,082 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 219 predicate places. [2024-11-07 11:21:43,082 INFO L471 AbstractCegarLoop]: Abstraction has has 245 places, 301 transitions, 5281 flow [2024-11-07 11:21:43,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.894736842105263) internal successors, (150), 19 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:43,082 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:43,082 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:43,096 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-07 11:21:43,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-07 11:21:43,284 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:21:43,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:43,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1231975709, now seen corresponding path program 6 times [2024-11-07 11:21:43,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:43,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848967428] [2024-11-07 11:21:43,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:43,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:43,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:43,628 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:21:43,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:43,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848967428] [2024-11-07 11:21:43,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848967428] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:21:43,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168201252] [2024-11-07 11:21:43,628 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-07 11:21:43,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:43,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:21:43,630 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:21:43,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-07 11:21:43,712 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-07 11:21:43,712 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:21:43,713 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-07 11:21:43,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:21:43,776 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 11:21:43,900 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:21:43,900 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 29 treesize of output 21 [2024-11-07 11:21:43,906 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:21:43,906 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:21:44,068 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:21:44,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 168 treesize of output 164 [2024-11-07 11:21:44,078 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-07 11:21:44,079 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 50 treesize of output 39 [2024-11-07 11:21:44,132 INFO L349 Elim1Store]: treesize reduction 13, result has 80.0 percent of original size [2024-11-07 11:21:44,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 190 treesize of output 185 [2024-11-07 11:21:44,331 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 11:21:44,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168201252] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:21:44,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:21:44,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 9] total 25 [2024-11-07 11:21:44,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324489965] [2024-11-07 11:21:44,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:21:44,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-07 11:21:44,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:44,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-07 11:21:44,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=521, Unknown=0, NotChecked=0, Total=650 [2024-11-07 11:21:44,332 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:21:44,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 301 transitions, 5281 flow. Second operand has 26 states, 26 states have (on average 7.1923076923076925) internal successors, (187), 26 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:44,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:44,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:21:44,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:45,999 INFO L124 PetriNetUnfolderBase]: 3794/6946 cut-off events. [2024-11-07 11:21:46,000 INFO L125 PetriNetUnfolderBase]: For 156707/156709 co-relation queries the response was YES. [2024-11-07 11:21:46,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46537 conditions, 6946 events. 3794/6946 cut-off events. For 156707/156709 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 49605 event pairs, 1164 based on Foata normal form. 50/6996 useless extension candidates. Maximal degree in co-relation 46427. Up to 5521 conditions per place. [2024-11-07 11:21:46,045 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 314 selfloop transitions, 110 changer transitions 7/434 dead transitions. [2024-11-07 11:21:46,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 434 transitions, 7900 flow [2024-11-07 11:21:46,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-07 11:21:46,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-07 11:21:46,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 262 transitions. [2024-11-07 11:21:46,047 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4253246753246753 [2024-11-07 11:21:46,047 INFO L175 Difference]: Start difference. First operand has 245 places, 301 transitions, 5281 flow. Second operand 22 states and 262 transitions. [2024-11-07 11:21:46,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 434 transitions, 7900 flow [2024-11-07 11:21:46,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 434 transitions, 7677 flow, removed 11 selfloop flow, removed 14 redundant places. [2024-11-07 11:21:46,474 INFO L231 Difference]: Finished difference. Result has 260 places, 353 transitions, 6661 flow [2024-11-07 11:21:46,475 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=5099, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=6661, PETRI_PLACES=260, PETRI_TRANSITIONS=353} [2024-11-07 11:21:46,475 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 234 predicate places. [2024-11-07 11:21:46,475 INFO L471 AbstractCegarLoop]: Abstraction has has 260 places, 353 transitions, 6661 flow [2024-11-07 11:21:46,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.1923076923076925) internal successors, (187), 26 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:46,475 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:46,475 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:46,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-07 11:21:46,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-07 11:21:46,677 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:21:46,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:46,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1246625319, now seen corresponding path program 5 times [2024-11-07 11:21:46,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:46,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261607685] [2024-11-07 11:21:46,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:46,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:46,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:46,910 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:21:46,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:46,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261607685] [2024-11-07 11:21:46,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261607685] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:21:46,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111875115] [2024-11-07 11:21:46,911 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 11:21:46,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:46,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:21:46,913 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:21:46,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-07 11:21:46,998 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-07 11:21:46,998 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:21:46,999 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-07 11:21:47,000 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:21:47,121 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-07 11:21:47,121 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 31 treesize of output 20 [2024-11-07 11:21:47,123 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 11:21:47,123 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:21:47,185 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-07 11:21:47,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2024-11-07 11:21:47,226 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 11:21:47,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111875115] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:21:47,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:21:47,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 6] total 20 [2024-11-07 11:21:47,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234859013] [2024-11-07 11:21:47,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:21:47,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-07 11:21:47,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:47,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-07 11:21:47,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2024-11-07 11:21:47,228 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:21:47,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 353 transitions, 6661 flow. Second operand has 21 states, 21 states have (on average 7.761904761904762) internal successors, (163), 21 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:47,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:47,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:21:47,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:48,777 INFO L124 PetriNetUnfolderBase]: 3786/6934 cut-off events. [2024-11-07 11:21:48,778 INFO L125 PetriNetUnfolderBase]: For 167073/167075 co-relation queries the response was YES. [2024-11-07 11:21:48,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47935 conditions, 6934 events. 3786/6934 cut-off events. For 167073/167075 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 49471 event pairs, 1171 based on Foata normal form. 14/6948 useless extension candidates. Maximal degree in co-relation 47817. Up to 5469 conditions per place. [2024-11-07 11:21:48,834 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 279 selfloop transitions, 108 changer transitions 15/405 dead transitions. [2024-11-07 11:21:48,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 405 transitions, 7895 flow [2024-11-07 11:21:48,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-07 11:21:48,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-07 11:21:48,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 194 transitions. [2024-11-07 11:21:48,836 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40756302521008403 [2024-11-07 11:21:48,836 INFO L175 Difference]: Start difference. First operand has 260 places, 353 transitions, 6661 flow. Second operand 17 states and 194 transitions. [2024-11-07 11:21:48,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 405 transitions, 7895 flow [2024-11-07 11:21:49,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 405 transitions, 7398 flow, removed 209 selfloop flow, removed 13 redundant places. [2024-11-07 11:21:49,487 INFO L231 Difference]: Finished difference. Result has 267 places, 356 transitions, 6590 flow [2024-11-07 11:21:49,488 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=6180, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6590, PETRI_PLACES=267, PETRI_TRANSITIONS=356} [2024-11-07 11:21:49,488 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 241 predicate places. [2024-11-07 11:21:49,488 INFO L471 AbstractCegarLoop]: Abstraction has has 267 places, 356 transitions, 6590 flow [2024-11-07 11:21:49,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.761904761904762) internal successors, (163), 21 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:49,488 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:49,488 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:49,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-07 11:21:49,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-07 11:21:49,689 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:21:49,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:49,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1742369999, now seen corresponding path program 7 times [2024-11-07 11:21:49,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:49,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982458152] [2024-11-07 11:21:49,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:49,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:50,013 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:21:50,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:50,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982458152] [2024-11-07 11:21:50,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982458152] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:21:50,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133462633] [2024-11-07 11:21:50,014 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-07 11:21:50,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:50,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:21:50,016 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:21:50,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-07 11:21:50,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:50,104 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-07 11:21:50,105 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:21:50,194 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-07 11:21:50,194 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 34 treesize of output 10 [2024-11-07 11:21:50,197 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 11:21:50,197 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:21:50,266 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-07 11:21:50,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2024-11-07 11:21:50,313 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 11:21:50,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133462633] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:21:50,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:21:50,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 6] total 19 [2024-11-07 11:21:50,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141908943] [2024-11-07 11:21:50,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:21:50,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-07 11:21:50,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:50,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-07 11:21:50,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2024-11-07 11:21:50,315 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:21:50,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 356 transitions, 6590 flow. Second operand has 20 states, 20 states have (on average 7.8) internal successors, (156), 20 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:50,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:50,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:21:50,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:52,028 INFO L124 PetriNetUnfolderBase]: 3956/7212 cut-off events. [2024-11-07 11:21:52,028 INFO L125 PetriNetUnfolderBase]: For 161789/161791 co-relation queries the response was YES. [2024-11-07 11:21:52,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48593 conditions, 7212 events. 3956/7212 cut-off events. For 161789/161791 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 51057 event pairs, 924 based on Foata normal form. 78/7290 useless extension candidates. Maximal degree in co-relation 48473. Up to 3817 conditions per place. [2024-11-07 11:21:52,104 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 279 selfloop transitions, 178 changer transitions 2/462 dead transitions. [2024-11-07 11:21:52,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 462 transitions, 8820 flow [2024-11-07 11:21:52,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-07 11:21:52,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-07 11:21:52,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 247 transitions. [2024-11-07 11:21:52,105 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44107142857142856 [2024-11-07 11:21:52,105 INFO L175 Difference]: Start difference. First operand has 267 places, 356 transitions, 6590 flow. Second operand 20 states and 247 transitions. [2024-11-07 11:21:52,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 462 transitions, 8820 flow [2024-11-07 11:21:52,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 462 transitions, 8620 flow, removed 23 selfloop flow, removed 12 redundant places. [2024-11-07 11:21:52,676 INFO L231 Difference]: Finished difference. Result has 276 places, 368 transitions, 7085 flow [2024-11-07 11:21:52,677 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=6394, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=7085, PETRI_PLACES=276, PETRI_TRANSITIONS=368} [2024-11-07 11:21:52,679 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 250 predicate places. [2024-11-07 11:21:52,679 INFO L471 AbstractCegarLoop]: Abstraction has has 276 places, 368 transitions, 7085 flow [2024-11-07 11:21:52,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.8) internal successors, (156), 20 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:52,679 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:52,679 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:52,691 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-07 11:21:52,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-07 11:21:52,884 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:21:52,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:52,885 INFO L85 PathProgramCache]: Analyzing trace with hash -247561881, now seen corresponding path program 6 times [2024-11-07 11:21:52,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:52,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132673299] [2024-11-07 11:21:52,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:52,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:52,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:53,185 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:21:53,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:53,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132673299] [2024-11-07 11:21:53,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132673299] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:21:53,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432408925] [2024-11-07 11:21:53,186 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-07 11:21:53,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:53,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:21:53,188 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:21:53,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-07 11:21:53,296 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-07 11:21:53,297 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:21:53,298 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-07 11:21:53,303 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:21:53,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-07 11:21:53,418 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 11:21:53,457 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 11:21:53,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-07 11:21:53,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-07 11:21:53,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-07 11:21:53,629 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:21:53,630 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 29 treesize of output 21 [2024-11-07 11:21:53,635 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:21:53,635 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:21:53,855 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:21:53,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 66 [2024-11-07 11:21:53,889 INFO L349 Elim1Store]: treesize reduction 28, result has 61.6 percent of original size [2024-11-07 11:21:53,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 208 treesize of output 184 [2024-11-07 11:21:53,896 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-07 11:21:53,897 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-07 11:21:53,911 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:21:53,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 140 treesize of output 132 [2024-11-07 11:21:54,049 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 7 refuted. 2 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:21:54,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432408925] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:21:54,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:21:54,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 11] total 30 [2024-11-07 11:21:54,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119526069] [2024-11-07 11:21:54,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:21:54,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-07 11:21:54,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:54,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-07 11:21:54,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=731, Unknown=9, NotChecked=0, Total=930 [2024-11-07 11:21:54,051 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:21:54,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 368 transitions, 7085 flow. Second operand has 31 states, 31 states have (on average 6.903225806451613) internal successors, (214), 31 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:54,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:54,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:21:54,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:55,700 INFO L124 PetriNetUnfolderBase]: 4031/7407 cut-off events. [2024-11-07 11:21:55,701 INFO L125 PetriNetUnfolderBase]: For 173356/173358 co-relation queries the response was YES. [2024-11-07 11:21:55,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50587 conditions, 7407 events. 4031/7407 cut-off events. For 173356/173358 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 53385 event pairs, 1300 based on Foata normal form. 72/7479 useless extension candidates. Maximal degree in co-relation 50465. Up to 6439 conditions per place. [2024-11-07 11:21:55,768 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 343 selfloop transitions, 92 changer transitions 5/443 dead transitions. [2024-11-07 11:21:55,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 443 transitions, 8661 flow [2024-11-07 11:21:55,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-07 11:21:55,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-07 11:21:55,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 228 transitions. [2024-11-07 11:21:55,769 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40714285714285714 [2024-11-07 11:21:55,769 INFO L175 Difference]: Start difference. First operand has 276 places, 368 transitions, 7085 flow. Second operand 20 states and 228 transitions. [2024-11-07 11:21:55,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 443 transitions, 8661 flow [2024-11-07 11:21:56,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 443 transitions, 8268 flow, removed 28 selfloop flow, removed 19 redundant places. [2024-11-07 11:21:56,357 INFO L231 Difference]: Finished difference. Result has 278 places, 375 transitions, 7071 flow [2024-11-07 11:21:56,358 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=6700, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=7071, PETRI_PLACES=278, PETRI_TRANSITIONS=375} [2024-11-07 11:21:56,358 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 252 predicate places. [2024-11-07 11:21:56,358 INFO L471 AbstractCegarLoop]: Abstraction has has 278 places, 375 transitions, 7071 flow [2024-11-07 11:21:56,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.903225806451613) internal successors, (214), 31 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:56,358 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:56,358 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:56,371 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-07 11:21:56,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-07 11:21:56,559 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:21:56,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:56,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1497463107, now seen corresponding path program 8 times [2024-11-07 11:21:56,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:56,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697198282] [2024-11-07 11:21:56,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:56,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:56,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:56,770 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:21:56,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:56,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697198282] [2024-11-07 11:21:56,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697198282] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:21:56,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005252577] [2024-11-07 11:21:56,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:21:56,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:56,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:21:56,773 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:21:56,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-07 11:21:56,859 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:21:56,859 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:21:56,860 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-07 11:21:56,861 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:21:56,992 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:21:56,993 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 29 treesize of output 21 [2024-11-07 11:21:56,996 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 11:21:56,997 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:21:57,062 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-07 11:21:57,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2024-11-07 11:21:57,116 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 11:21:57,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005252577] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:21:57,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:21:57,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 6] total 20 [2024-11-07 11:21:57,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060005452] [2024-11-07 11:21:57,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:21:57,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-07 11:21:57,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:57,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-07 11:21:57,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2024-11-07 11:21:57,118 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:21:57,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 375 transitions, 7071 flow. Second operand has 21 states, 21 states have (on average 7.619047619047619) internal successors, (160), 21 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:57,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:57,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:21:57,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:58,743 INFO L124 PetriNetUnfolderBase]: 3924/7184 cut-off events. [2024-11-07 11:21:58,744 INFO L125 PetriNetUnfolderBase]: For 161434/161436 co-relation queries the response was YES. [2024-11-07 11:21:58,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49587 conditions, 7184 events. 3924/7184 cut-off events. For 161434/161436 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 51149 event pairs, 1133 based on Foata normal form. 17/7201 useless extension candidates. Maximal degree in co-relation 49466. Up to 5215 conditions per place. [2024-11-07 11:21:58,804 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 277 selfloop transitions, 151 changer transitions 15/446 dead transitions. [2024-11-07 11:21:58,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 446 transitions, 8513 flow [2024-11-07 11:21:58,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-07 11:21:58,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-07 11:21:58,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 243 transitions. [2024-11-07 11:21:58,805 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3944805194805195 [2024-11-07 11:21:58,806 INFO L175 Difference]: Start difference. First operand has 278 places, 375 transitions, 7071 flow. Second operand 22 states and 243 transitions. [2024-11-07 11:21:58,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 446 transitions, 8513 flow [2024-11-07 11:21:59,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 446 transitions, 8380 flow, removed 13 selfloop flow, removed 12 redundant places. [2024-11-07 11:21:59,356 INFO L231 Difference]: Finished difference. Result has 290 places, 381 transitions, 7489 flow [2024-11-07 11:21:59,357 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=6858, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=7489, PETRI_PLACES=290, PETRI_TRANSITIONS=381} [2024-11-07 11:21:59,357 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 264 predicate places. [2024-11-07 11:21:59,357 INFO L471 AbstractCegarLoop]: Abstraction has has 290 places, 381 transitions, 7489 flow [2024-11-07 11:21:59,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.619047619047619) internal successors, (160), 21 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:21:59,357 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:59,357 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:59,370 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-07 11:21:59,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,29 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:59,560 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:21:59,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:59,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1589704119, now seen corresponding path program 7 times [2024-11-07 11:21:59,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:59,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102071525] [2024-11-07 11:21:59,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:59,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:59,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:59,797 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:21:59,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:59,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102071525] [2024-11-07 11:21:59,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102071525] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:21:59,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582854082] [2024-11-07 11:21:59,798 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-07 11:21:59,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:59,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:21:59,800 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:21:59,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-07 11:21:59,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:59,890 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-07 11:21:59,890 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:21:59,949 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:21:59,949 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 37 treesize of output 25 [2024-11-07 11:21:59,954 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 11:21:59,954 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:22:00,007 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-07 11:22:00,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2024-11-07 11:22:00,058 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 11:22:00,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582854082] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:22:00,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:22:00,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 6] total 18 [2024-11-07 11:22:00,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265344715] [2024-11-07 11:22:00,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:22:00,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-07 11:22:00,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:00,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-07 11:22:00,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2024-11-07 11:22:00,060 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:22:00,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 381 transitions, 7489 flow. Second operand has 19 states, 19 states have (on average 7.894736842105263) internal successors, (150), 19 states have internal predecessors, (150), 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 11:22:00,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:00,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:22:00,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:01,791 INFO L124 PetriNetUnfolderBase]: 3880/7056 cut-off events. [2024-11-07 11:22:01,791 INFO L125 PetriNetUnfolderBase]: For 177959/177961 co-relation queries the response was YES. [2024-11-07 11:22:01,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50664 conditions, 7056 events. 3880/7056 cut-off events. For 177959/177961 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 48906 event pairs, 1129 based on Foata normal form. 22/7078 useless extension candidates. Maximal degree in co-relation 50540. Up to 5485 conditions per place. [2024-11-07 11:22:01,871 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 336 selfloop transitions, 134 changer transitions 13/486 dead transitions. [2024-11-07 11:22:01,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 486 transitions, 9492 flow [2024-11-07 11:22:01,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-07 11:22:01,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-07 11:22:01,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 289 transitions. [2024-11-07 11:22:01,872 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41285714285714287 [2024-11-07 11:22:01,872 INFO L175 Difference]: Start difference. First operand has 290 places, 381 transitions, 7489 flow. Second operand 25 states and 289 transitions. [2024-11-07 11:22:01,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 486 transitions, 9492 flow [2024-11-07 11:22:02,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 486 transitions, 9172 flow, removed 58 selfloop flow, removed 16 redundant places. [2024-11-07 11:22:02,515 INFO L231 Difference]: Finished difference. Result has 300 places, 392 transitions, 7846 flow [2024-11-07 11:22:02,516 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=7101, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=7846, PETRI_PLACES=300, PETRI_TRANSITIONS=392} [2024-11-07 11:22:02,517 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 274 predicate places. [2024-11-07 11:22:02,517 INFO L471 AbstractCegarLoop]: Abstraction has has 300 places, 392 transitions, 7846 flow [2024-11-07 11:22:02,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.894736842105263) internal successors, (150), 19 states have internal predecessors, (150), 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 11:22:02,517 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:02,517 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:22:02,534 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-07 11:22:02,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,30 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:02,719 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:22:02,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:02,720 INFO L85 PathProgramCache]: Analyzing trace with hash 2085993429, now seen corresponding path program 8 times [2024-11-07 11:22:02,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:02,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96561019] [2024-11-07 11:22:02,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:02,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:02,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:02,952 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:22:02,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:02,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96561019] [2024-11-07 11:22:02,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96561019] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:02,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258514062] [2024-11-07 11:22:02,952 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:22:02,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:02,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:02,957 INFO L229 MonitoredProcess]: Starting monitored process 31 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 11:22:02,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-07 11:22:03,055 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:22:03,055 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:22:03,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-07 11:22:03,057 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:03,219 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 11:22:03,220 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 27 treesize of output 15 [2024-11-07 11:22:03,221 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 11:22:03,222 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:22:03,304 INFO L349 Elim1Store]: treesize reduction 30, result has 63.9 percent of original size [2024-11-07 11:22:03,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 60 [2024-11-07 11:22:03,345 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 11:22:03,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258514062] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:22:03,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:22:03,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 7] total 22 [2024-11-07 11:22:03,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446569232] [2024-11-07 11:22:03,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:22:03,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-07 11:22:03,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:03,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-07 11:22:03,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2024-11-07 11:22:03,346 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:22:03,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 392 transitions, 7846 flow. Second operand has 23 states, 23 states have (on average 7.521739130434782) internal successors, (173), 23 states have internal predecessors, (173), 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 11:22:03,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:03,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:22:03,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:04,944 INFO L124 PetriNetUnfolderBase]: 3955/7187 cut-off events. [2024-11-07 11:22:04,945 INFO L125 PetriNetUnfolderBase]: For 191241/191243 co-relation queries the response was YES. [2024-11-07 11:22:04,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52470 conditions, 7187 events. 3955/7187 cut-off events. For 191241/191243 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 50015 event pairs, 1043 based on Foata normal form. 14/7201 useless extension candidates. Maximal degree in co-relation 52341. Up to 5939 conditions per place. [2024-11-07 11:22:05,022 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 409 selfloop transitions, 63 changer transitions 20/495 dead transitions. [2024-11-07 11:22:05,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 495 transitions, 10228 flow [2024-11-07 11:22:05,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-07 11:22:05,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-07 11:22:05,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 223 transitions. [2024-11-07 11:22:05,024 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4191729323308271 [2024-11-07 11:22:05,024 INFO L175 Difference]: Start difference. First operand has 300 places, 392 transitions, 7846 flow. Second operand 19 states and 223 transitions. [2024-11-07 11:22:05,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 495 transitions, 10228 flow [2024-11-07 11:22:05,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 495 transitions, 9749 flow, removed 168 selfloop flow, removed 17 redundant places. [2024-11-07 11:22:05,729 INFO L231 Difference]: Finished difference. Result has 302 places, 415 transitions, 8153 flow [2024-11-07 11:22:05,729 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=7479, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=8153, PETRI_PLACES=302, PETRI_TRANSITIONS=415} [2024-11-07 11:22:05,730 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 276 predicate places. [2024-11-07 11:22:05,730 INFO L471 AbstractCegarLoop]: Abstraction has has 302 places, 415 transitions, 8153 flow [2024-11-07 11:22:05,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.521739130434782) internal successors, (173), 23 states have internal predecessors, (173), 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 11:22:05,730 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:05,730 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:22:05,743 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-07 11:22:05,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-11-07 11:22:05,935 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:22:05,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:05,935 INFO L85 PathProgramCache]: Analyzing trace with hash -524511181, now seen corresponding path program 9 times [2024-11-07 11:22:05,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:05,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969169914] [2024-11-07 11:22:05,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:05,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:05,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:06,158 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:22:06,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:06,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969169914] [2024-11-07 11:22:06,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969169914] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:06,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806590990] [2024-11-07 11:22:06,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:22:06,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:06,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:06,161 INFO L229 MonitoredProcess]: Starting monitored process 32 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 11:22:06,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-07 11:22:06,247 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-07 11:22:06,247 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:22:06,248 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-07 11:22:06,249 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:06,330 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 11:22:06,494 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 11:22:06,494 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 27 treesize of output 15 [2024-11-07 11:22:06,510 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:22:06,510 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:22:06,676 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:22:06,677 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 168 treesize of output 164 [2024-11-07 11:22:06,686 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-07 11:22:06,687 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 50 treesize of output 39 [2024-11-07 11:22:06,744 INFO L349 Elim1Store]: treesize reduction 13, result has 80.0 percent of original size [2024-11-07 11:22:06,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 195 treesize of output 190 [2024-11-07 11:22:06,926 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:22:06,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806590990] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:22:06,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:22:06,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 12] total 31 [2024-11-07 11:22:06,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917071221] [2024-11-07 11:22:06,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:22:06,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-07 11:22:06,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:06,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-07 11:22:06,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=823, Unknown=0, NotChecked=0, Total=992 [2024-11-07 11:22:06,928 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:22:06,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 415 transitions, 8153 flow. Second operand has 32 states, 32 states have (on average 6.90625) internal successors, (221), 32 states have internal predecessors, (221), 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 11:22:06,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:06,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:22:06,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:08,647 INFO L124 PetriNetUnfolderBase]: 3951/7203 cut-off events. [2024-11-07 11:22:08,647 INFO L125 PetriNetUnfolderBase]: For 165923/165925 co-relation queries the response was YES. [2024-11-07 11:22:08,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50765 conditions, 7203 events. 3951/7203 cut-off events. For 165923/165925 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 50229 event pairs, 1222 based on Foata normal form. 10/7213 useless extension candidates. Maximal degree in co-relation 50625. Up to 6557 conditions per place. [2024-11-07 11:22:08,728 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 404 selfloop transitions, 45 changer transitions 31/483 dead transitions. [2024-11-07 11:22:08,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 483 transitions, 9828 flow [2024-11-07 11:22:08,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-07 11:22:08,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-07 11:22:08,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 200 transitions. [2024-11-07 11:22:08,730 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3968253968253968 [2024-11-07 11:22:08,730 INFO L175 Difference]: Start difference. First operand has 302 places, 415 transitions, 8153 flow. Second operand 18 states and 200 transitions. [2024-11-07 11:22:08,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 483 transitions, 9828 flow [2024-11-07 11:22:09,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 483 transitions, 9404 flow, removed 181 selfloop flow, removed 9 redundant places. [2024-11-07 11:22:09,491 INFO L231 Difference]: Finished difference. Result has 315 places, 417 transitions, 7973 flow [2024-11-07 11:22:09,491 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=7857, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=7973, PETRI_PLACES=315, PETRI_TRANSITIONS=417} [2024-11-07 11:22:09,492 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 289 predicate places. [2024-11-07 11:22:09,492 INFO L471 AbstractCegarLoop]: Abstraction has has 315 places, 417 transitions, 7973 flow [2024-11-07 11:22:09,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.90625) internal successors, (221), 32 states have internal predecessors, (221), 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 11:22:09,492 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:09,492 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:22:09,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-11-07 11:22:09,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-11-07 11:22:09,692 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:22:09,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:09,693 INFO L85 PathProgramCache]: Analyzing trace with hash -888786901, now seen corresponding path program 10 times [2024-11-07 11:22:09,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:09,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339676063] [2024-11-07 11:22:09,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:09,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:09,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:09,971 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:22:09,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:09,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339676063] [2024-11-07 11:22:09,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339676063] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:09,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197370663] [2024-11-07 11:22:09,971 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 11:22:09,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:09,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:09,973 INFO L229 MonitoredProcess]: Starting monitored process 33 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 11:22:09,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-07 11:22:10,058 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 11:22:10,059 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:22:10,059 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-07 11:22:10,060 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:10,165 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:22:10,166 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 33 treesize of output 25 [2024-11-07 11:22:10,174 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 11:22:10,174 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:22:10,257 INFO L349 Elim1Store]: treesize reduction 30, result has 63.9 percent of original size [2024-11-07 11:22:10,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 60 [2024-11-07 11:22:10,303 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 11:22:10,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197370663] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:22:10,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:22:10,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 7] total 20 [2024-11-07 11:22:10,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026375814] [2024-11-07 11:22:10,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:22:10,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-07 11:22:10,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:10,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-07 11:22:10,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2024-11-07 11:22:10,304 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:22:10,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 417 transitions, 7973 flow. Second operand has 21 states, 21 states have (on average 7.619047619047619) internal successors, (160), 21 states have internal predecessors, (160), 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 11:22:10,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:10,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:22:10,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:11,993 INFO L124 PetriNetUnfolderBase]: 4006/7301 cut-off events. [2024-11-07 11:22:11,994 INFO L125 PetriNetUnfolderBase]: For 155628/155630 co-relation queries the response was YES. [2024-11-07 11:22:12,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49963 conditions, 7301 events. 4006/7301 cut-off events. For 155628/155630 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 51158 event pairs, 1080 based on Foata normal form. 30/7331 useless extension candidates. Maximal degree in co-relation 49814. Up to 5915 conditions per place. [2024-11-07 11:22:12,073 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 415 selfloop transitions, 84 changer transitions 3/505 dead transitions. [2024-11-07 11:22:12,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 505 transitions, 10037 flow [2024-11-07 11:22:12,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-07 11:22:12,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-07 11:22:12,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 212 transitions. [2024-11-07 11:22:12,074 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42063492063492064 [2024-11-07 11:22:12,074 INFO L175 Difference]: Start difference. First operand has 315 places, 417 transitions, 7973 flow. Second operand 18 states and 212 transitions. [2024-11-07 11:22:12,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 505 transitions, 10037 flow [2024-11-07 11:22:12,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 505 transitions, 9867 flow, removed 48 selfloop flow, removed 11 redundant places. [2024-11-07 11:22:12,892 INFO L231 Difference]: Finished difference. Result has 320 places, 433 transitions, 8416 flow [2024-11-07 11:22:12,892 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=7859, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=8416, PETRI_PLACES=320, PETRI_TRANSITIONS=433} [2024-11-07 11:22:12,893 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 294 predicate places. [2024-11-07 11:22:12,893 INFO L471 AbstractCegarLoop]: Abstraction has has 320 places, 433 transitions, 8416 flow [2024-11-07 11:22:12,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.619047619047619) internal successors, (160), 21 states have internal predecessors, (160), 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 11:22:12,893 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:12,893 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:22:12,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-07 11:22:13,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-11-07 11:22:13,094 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:22:13,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:13,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1804670255, now seen corresponding path program 11 times [2024-11-07 11:22:13,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:13,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707988720] [2024-11-07 11:22:13,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:13,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:13,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:13,302 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:22:13,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:13,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707988720] [2024-11-07 11:22:13,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707988720] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:13,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468872856] [2024-11-07 11:22:13,303 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 11:22:13,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:13,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:13,309 INFO L229 MonitoredProcess]: Starting monitored process 34 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 11:22:13,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-07 11:22:13,405 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-07 11:22:13,405 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:22:13,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-07 11:22:13,407 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:13,524 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:22:13,524 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 29 treesize of output 21 [2024-11-07 11:22:13,528 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 11:22:13,528 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:22:13,577 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-07 11:22:13,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2024-11-07 11:22:13,622 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 11:22:13,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468872856] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:22:13,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:22:13,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 6] total 21 [2024-11-07 11:22:13,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981587217] [2024-11-07 11:22:13,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:22:13,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-07 11:22:13,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:13,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-07 11:22:13,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2024-11-07 11:22:13,624 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:22:13,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 433 transitions, 8416 flow. Second operand has 22 states, 22 states have (on average 7.545454545454546) internal successors, (166), 22 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:13,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:13,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:22:13,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:15,571 INFO L124 PetriNetUnfolderBase]: 4287/7852 cut-off events. [2024-11-07 11:22:15,572 INFO L125 PetriNetUnfolderBase]: For 178756/178756 co-relation queries the response was YES. [2024-11-07 11:22:15,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54186 conditions, 7852 events. 4287/7852 cut-off events. For 178756/178756 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 56347 event pairs, 1228 based on Foata normal form. 42/7894 useless extension candidates. Maximal degree in co-relation 54047. Up to 6140 conditions per place. [2024-11-07 11:22:15,656 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 431 selfloop transitions, 108 changer transitions 6/548 dead transitions. [2024-11-07 11:22:15,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 548 transitions, 10860 flow [2024-11-07 11:22:15,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-07 11:22:15,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-07 11:22:15,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 265 transitions. [2024-11-07 11:22:15,658 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4301948051948052 [2024-11-07 11:22:15,658 INFO L175 Difference]: Start difference. First operand has 320 places, 433 transitions, 8416 flow. Second operand 22 states and 265 transitions. [2024-11-07 11:22:15,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 548 transitions, 10860 flow [2024-11-07 11:22:16,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 548 transitions, 10611 flow, removed 61 selfloop flow, removed 14 redundant places. [2024-11-07 11:22:16,470 INFO L231 Difference]: Finished difference. Result has 335 places, 468 transitions, 9348 flow [2024-11-07 11:22:16,470 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=8203, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=9348, PETRI_PLACES=335, PETRI_TRANSITIONS=468} [2024-11-07 11:22:16,471 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 309 predicate places. [2024-11-07 11:22:16,471 INFO L471 AbstractCegarLoop]: Abstraction has has 335 places, 468 transitions, 9348 flow [2024-11-07 11:22:16,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.545454545454546) internal successors, (166), 22 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:16,471 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:16,472 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:22:16,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-07 11:22:16,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,34 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:16,676 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:22:16,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:16,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1124826281, now seen corresponding path program 9 times [2024-11-07 11:22:16,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:16,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345697569] [2024-11-07 11:22:16,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:16,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:17,067 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:22:17,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:17,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345697569] [2024-11-07 11:22:17,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345697569] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:17,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869726782] [2024-11-07 11:22:17,067 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:22:17,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:17,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:17,069 INFO L229 MonitoredProcess]: Starting monitored process 35 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 11:22:17,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-07 11:22:17,171 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-07 11:22:17,172 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:22:17,173 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-07 11:22:17,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:17,265 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 11:22:17,461 INFO L349 Elim1Store]: treesize reduction 32, result has 43.9 percent of original size [2024-11-07 11:22:17,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 30 treesize of output 34 [2024-11-07 11:22:17,517 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:22:17,517 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:22:17,868 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:22:17,868 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 163 treesize of output 159 [2024-11-07 11:22:17,910 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-07 11:22:17,911 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 48 treesize of output 40 [2024-11-07 11:22:17,952 INFO L349 Elim1Store]: treesize reduction 15, result has 78.9 percent of original size [2024-11-07 11:22:17,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 191 treesize of output 194 [2024-11-07 11:22:18,436 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:22:18,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869726782] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:22:18,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:22:18,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 35 [2024-11-07 11:22:18,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956290173] [2024-11-07 11:22:18,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:22:18,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-07 11:22:18,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:18,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-07 11:22:18,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1052, Unknown=0, NotChecked=0, Total=1260 [2024-11-07 11:22:18,438 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-07 11:22:18,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 468 transitions, 9348 flow. Second operand has 36 states, 36 states have (on average 6.944444444444445) internal successors, (250), 36 states have internal predecessors, (250), 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 11:22:18,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:18,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-07 11:22:18,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:26,044 INFO L124 PetriNetUnfolderBase]: 11421/21154 cut-off events. [2024-11-07 11:22:26,044 INFO L125 PetriNetUnfolderBase]: For 529744/529746 co-relation queries the response was YES. [2024-11-07 11:22:26,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148970 conditions, 21154 events. 11421/21154 cut-off events. For 529744/529746 co-relation queries the response was YES. Maximal size of possible extension queue 1029. Compared 182779 event pairs, 1195 based on Foata normal form. 121/21275 useless extension candidates. Maximal degree in co-relation 148824. Up to 5249 conditions per place. [2024-11-07 11:22:26,337 INFO L140 encePairwiseOnDemand]: 13/28 looper letters, 616 selfloop transitions, 1026 changer transitions 14/1659 dead transitions. [2024-11-07 11:22:26,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 1659 transitions, 34305 flow [2024-11-07 11:22:26,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-11-07 11:22:26,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2024-11-07 11:22:26,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 838 transitions. [2024-11-07 11:22:26,338 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4156746031746032 [2024-11-07 11:22:26,338 INFO L175 Difference]: Start difference. First operand has 335 places, 468 transitions, 9348 flow. Second operand 72 states and 838 transitions. [2024-11-07 11:22:26,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 1659 transitions, 34305 flow [2024-11-07 11:22:30,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 1659 transitions, 32948 flow, removed 584 selfloop flow, removed 11 redundant places. [2024-11-07 11:22:30,244 INFO L231 Difference]: Finished difference. Result has 433 places, 1295 transitions, 29597 flow [2024-11-07 11:22:30,245 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=8968, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=299, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=29597, PETRI_PLACES=433, PETRI_TRANSITIONS=1295} [2024-11-07 11:22:30,245 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 407 predicate places. [2024-11-07 11:22:30,245 INFO L471 AbstractCegarLoop]: Abstraction has has 433 places, 1295 transitions, 29597 flow [2024-11-07 11:22:30,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 6.944444444444445) internal successors, (250), 36 states have internal predecessors, (250), 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 11:22:30,245 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:30,246 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:22:30,258 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0