./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-chromosome-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/chl-chromosome-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', '23ca06a4d1d66eab783b29fc3ce31114eee62eb7d17a2452b84e2d73b8d92cfa'] 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/chl-chromosome-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 23ca06a4d1d66eab783b29fc3ce31114eee62eb7d17a2452b84e2d73b8d92cfa --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 11:22:29,280 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 11:22:29,350 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-07 11:22:29,354 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 11:22:29,354 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 11:22:29,378 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 11:22:29,379 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 11:22:29,380 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 11:22:29,380 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 11:22:29,380 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 11:22:29,381 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 11:22:29,381 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 11:22:29,381 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 11:22:29,381 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 11:22:29,381 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 11:22:29,381 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 11:22:29,382 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 11:22:29,382 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 11:22:29,382 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 11:22:29,382 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 11:22:29,382 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 11:22:29,382 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 11:22:29,382 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 11:22:29,383 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 11:22:29,383 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 11:22:29,383 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 11:22:29,383 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 11:22:29,383 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 11:22:29,384 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 11:22:29,384 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 11:22:29,384 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 11:22:29,384 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 11:22:29,384 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:22:29,384 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 11:22:29,384 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 11:22:29,384 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 11:22:29,384 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 11:22:29,385 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 11:22:29,385 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 11:22:29,385 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 11:22:29,385 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 11:22:29,385 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 11:22:29,385 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 -> 23ca06a4d1d66eab783b29fc3ce31114eee62eb7d17a2452b84e2d73b8d92cfa [2024-11-07 11:22:29,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 11:22:29,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 11:22:29,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 11:22:29,628 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 11:22:29,628 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 11:22:29,629 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2024-11-07 11:22:30,800 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 11:22:31,023 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 11:22:31,024 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2024-11-07 11:22:31,032 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d5e2ce1a0/56d034a2a9754b19996c8570aad8b29d/FLAGee22bd6bb [2024-11-07 11:22:31,386 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d5e2ce1a0/56d034a2a9754b19996c8570aad8b29d [2024-11-07 11:22:31,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 11:22:31,389 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 11:22:31,390 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 11:22:31,390 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 11:22:31,393 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 11:22:31,394 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:22:31" (1/1) ... [2024-11-07 11:22:31,395 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27ce685c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:31, skipping insertion in model container [2024-11-07 11:22:31,395 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:22:31" (1/1) ... [2024-11-07 11:22:31,410 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 11:22:31,539 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/chl-chromosome-symm.wvr.c[2721,2734] [2024-11-07 11:22:31,554 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:22:31,562 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 11:22:31,587 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/chl-chromosome-symm.wvr.c[2721,2734] [2024-11-07 11:22:31,589 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:22:31,606 INFO L204 MainTranslator]: Completed translation [2024-11-07 11:22:31,606 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:31 WrapperNode [2024-11-07 11:22:31,607 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 11:22:31,608 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 11:22:31,608 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 11:22:31,608 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 11:22:31,614 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:31" (1/1) ... [2024-11-07 11:22:31,622 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:31" (1/1) ... [2024-11-07 11:22:31,640 INFO L138 Inliner]: procedures = 24, calls = 27, calls flagged for inlining = 15, calls inlined = 19, statements flattened = 191 [2024-11-07 11:22:31,641 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 11:22:31,641 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 11:22:31,641 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 11:22:31,641 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 11:22:31,648 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:31" (1/1) ... [2024-11-07 11:22:31,648 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:31" (1/1) ... [2024-11-07 11:22:31,650 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:31" (1/1) ... [2024-11-07 11:22:31,662 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 11:22:31,662 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:31" (1/1) ... [2024-11-07 11:22:31,662 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:31" (1/1) ... [2024-11-07 11:22:31,671 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:31" (1/1) ... [2024-11-07 11:22:31,674 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:31" (1/1) ... [2024-11-07 11:22:31,676 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:31" (1/1) ... [2024-11-07 11:22:31,677 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:31" (1/1) ... [2024-11-07 11:22:31,680 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 11:22:31,681 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 11:22:31,681 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 11:22:31,681 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 11:22:31,682 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:31" (1/1) ... [2024-11-07 11:22:31,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:22:31,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:31,716 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 11:22:31,722 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 11:22:31,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 11:22:31,743 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-07 11:22:31,743 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-07 11:22:31,743 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-07 11:22:31,743 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-07 11:22:31,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 11:22:31,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 11:22:31,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 11:22:31,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 11:22:31,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-07 11:22:31,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 11:22:31,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 11:22:31,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 11:22:31,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 11:22:31,745 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 11:22:31,834 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 11:22:31,836 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 11:22:32,145 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 11:22:32,145 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 11:22:32,420 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 11:22:32,420 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-07 11:22:32,421 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:22:32 BoogieIcfgContainer [2024-11-07 11:22:32,421 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 11:22:32,422 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 11:22:32,423 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 11:22:32,426 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 11:22:32,427 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:22:31" (1/3) ... [2024-11-07 11:22:32,428 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bffa324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:22:32, skipping insertion in model container [2024-11-07 11:22:32,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:31" (2/3) ... [2024-11-07 11:22:32,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bffa324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:22:32, skipping insertion in model container [2024-11-07 11:22:32,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:22:32" (3/3) ... [2024-11-07 11:22:32,430 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-symm.wvr.c [2024-11-07 11:22:32,440 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 11:22:32,441 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-07 11:22:32,441 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 11:22:32,482 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-07 11:22:32,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 22 transitions, 58 flow [2024-11-07 11:22:32,533 INFO L124 PetriNetUnfolderBase]: 4/20 cut-off events. [2024-11-07 11:22:32,536 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 11:22:32,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 20 events. 4/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 11 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 12. Up to 2 conditions per place. [2024-11-07 11:22:32,538 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 22 transitions, 58 flow [2024-11-07 11:22:32,541 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 19 transitions, 50 flow [2024-11-07 11:22:32,550 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 11:22:32,557 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;@2c0285bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 11:22:32,557 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-07 11:22:32,563 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 11:22:32,563 INFO L124 PetriNetUnfolderBase]: 4/18 cut-off events. [2024-11-07 11:22:32,564 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 11:22:32,564 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:32,564 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:22:32,565 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 11:22:32,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:32,569 INFO L85 PathProgramCache]: Analyzing trace with hash 2024243091, now seen corresponding path program 1 times [2024-11-07 11:22:32,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:32,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721609765] [2024-11-07 11:22:32,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:32,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:32,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:32,857 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 11:22:32,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:32,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721609765] [2024-11-07 11:22:32,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721609765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:32,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:22:32,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 11:22:32,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247621858] [2024-11-07 11:22:32,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:32,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 11:22:32,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:32,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 11:22:32,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 11:22:32,891 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:22:32,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 19 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:32,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:32,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:22:32,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:32,969 INFO L124 PetriNetUnfolderBase]: 39/74 cut-off events. [2024-11-07 11:22:32,970 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-07 11:22:32,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 74 events. 39/74 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 120 event pairs, 22 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 120. Up to 72 conditions per place. [2024-11-07 11:22:32,974 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 16 selfloop transitions, 4 changer transitions 0/21 dead transitions. [2024-11-07 11:22:32,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 21 transitions, 94 flow [2024-11-07 11:22:32,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 11:22:32,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 11:22:32,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 31 transitions. [2024-11-07 11:22:32,984 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2024-11-07 11:22:32,985 INFO L175 Difference]: Start difference. First operand has 22 places, 19 transitions, 50 flow. Second operand 3 states and 31 transitions. [2024-11-07 11:22:32,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 21 transitions, 94 flow [2024-11-07 11:22:32,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 21 transitions, 86 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-07 11:22:32,995 INFO L231 Difference]: Finished difference. Result has 21 places, 21 transitions, 64 flow [2024-11-07 11:22:32,997 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=21, PETRI_TRANSITIONS=21} [2024-11-07 11:22:33,004 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, -1 predicate places. [2024-11-07 11:22:33,004 INFO L471 AbstractCegarLoop]: Abstraction has has 21 places, 21 transitions, 64 flow [2024-11-07 11:22:33,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:33,004 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:33,004 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 11:22:33,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 11:22:33,005 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 11:22:33,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:33,005 INFO L85 PathProgramCache]: Analyzing trace with hash -637121085, now seen corresponding path program 1 times [2024-11-07 11:22:33,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:33,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917476111] [2024-11-07 11:22:33,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:33,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:33,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:33,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:22:33,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:33,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917476111] [2024-11-07 11:22:33,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917476111] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:33,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899423421] [2024-11-07 11:22:33,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:33,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:33,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:33,209 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 11:22:33,210 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 11:22:33,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:33,308 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-07 11:22:33,310 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:33,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:22:33,348 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:22:33,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:22:33,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899423421] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:22:33,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:22:33,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-07 11:22:33,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443624333] [2024-11-07 11:22:33,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:22:33,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-07 11:22:33,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:33,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-07 11:22:33,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-07 11:22:33,368 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:22:33,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 21 transitions, 64 flow. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:33,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:33,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:22:33,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:33,451 INFO L124 PetriNetUnfolderBase]: 39/80 cut-off events. [2024-11-07 11:22:33,451 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 11:22:33,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 80 events. 39/80 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 121 event pairs, 22 based on Foata normal form. 3/67 useless extension candidates. Maximal degree in co-relation 152. Up to 72 conditions per place. [2024-11-07 11:22:33,452 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 16 selfloop transitions, 10 changer transitions 0/27 dead transitions. [2024-11-07 11:22:33,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 27 transitions, 140 flow [2024-11-07 11:22:33,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 11:22:33,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 11:22:33,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 50 transitions. [2024-11-07 11:22:33,453 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-11-07 11:22:33,453 INFO L175 Difference]: Start difference. First operand has 21 places, 21 transitions, 64 flow. Second operand 6 states and 50 transitions. [2024-11-07 11:22:33,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 27 transitions, 140 flow [2024-11-07 11:22:33,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 27 transitions, 136 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 11:22:33,454 INFO L231 Difference]: Finished difference. Result has 28 places, 27 transitions, 126 flow [2024-11-07 11:22:33,454 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=126, PETRI_PLACES=28, PETRI_TRANSITIONS=27} [2024-11-07 11:22:33,455 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 6 predicate places. [2024-11-07 11:22:33,455 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 27 transitions, 126 flow [2024-11-07 11:22:33,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:33,455 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:33,455 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:22:33,469 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 11:22:33,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:33,660 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 11:22:33,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:33,661 INFO L85 PathProgramCache]: Analyzing trace with hash 320875781, now seen corresponding path program 2 times [2024-11-07 11:22:33,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:33,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084103114] [2024-11-07 11:22:33,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:33,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:33,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:33,850 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-07 11:22:33,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:33,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084103114] [2024-11-07 11:22:33,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084103114] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:33,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431099938] [2024-11-07 11:22:33,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:22:33,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:33,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:33,858 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 11:22:33,859 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 11:22:33,958 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-07 11:22:33,958 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:22:33,959 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-07 11:22:33,960 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:34,059 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-07 11:22:34,060 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 11:22:34,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431099938] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:34,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 11:22:34,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-07 11:22:34,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108648547] [2024-11-07 11:22:34,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:34,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:22:34,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:34,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:22:34,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-07 11:22:34,062 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:22:34,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 27 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:34,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:34,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:22:34,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:34,164 INFO L124 PetriNetUnfolderBase]: 61/124 cut-off events. [2024-11-07 11:22:34,164 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 11:22:34,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 124 events. 61/124 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 288 event pairs, 22 based on Foata normal form. 3/98 useless extension candidates. Maximal degree in co-relation 232. Up to 80 conditions per place. [2024-11-07 11:22:34,167 INFO L140 encePairwiseOnDemand]: 18/22 looper letters, 37 selfloop transitions, 3 changer transitions 2/43 dead transitions. [2024-11-07 11:22:34,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 43 transitions, 246 flow [2024-11-07 11:22:34,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:22:34,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:22:34,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 47 transitions. [2024-11-07 11:22:34,169 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5340909090909091 [2024-11-07 11:22:34,169 INFO L175 Difference]: Start difference. First operand has 28 places, 27 transitions, 126 flow. Second operand 4 states and 47 transitions. [2024-11-07 11:22:34,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 43 transitions, 246 flow [2024-11-07 11:22:34,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 43 transitions, 230 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-07 11:22:34,172 INFO L231 Difference]: Finished difference. Result has 32 places, 29 transitions, 130 flow [2024-11-07 11:22:34,173 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=130, PETRI_PLACES=32, PETRI_TRANSITIONS=29} [2024-11-07 11:22:34,173 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 10 predicate places. [2024-11-07 11:22:34,174 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 29 transitions, 130 flow [2024-11-07 11:22:34,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:34,174 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:34,174 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:22:34,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-07 11:22:34,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:34,375 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 11:22:34,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:34,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1510976613, now seen corresponding path program 3 times [2024-11-07 11:22:34,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:34,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318616699] [2024-11-07 11:22:34,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:34,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:34,541 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-07 11:22:34,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:34,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318616699] [2024-11-07 11:22:34,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318616699] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:34,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753199685] [2024-11-07 11:22:34,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:22:34,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:34,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:34,544 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 11:22:34,545 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 11:22:34,654 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-07 11:22:34,654 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:22:34,656 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-07 11:22:34,657 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:34,716 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-07 11:22:34,716 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 11:22:34,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753199685] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:34,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 11:22:34,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-07 11:22:34,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958735928] [2024-11-07 11:22:34,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:34,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:22:34,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:34,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:22:34,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-07 11:22:34,717 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:22:34,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 29 transitions, 130 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:34,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:34,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:22:34,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:34,832 INFO L124 PetriNetUnfolderBase]: 93/186 cut-off events. [2024-11-07 11:22:34,834 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2024-11-07 11:22:34,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 186 events. 93/186 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 522 event pairs, 39 based on Foata normal form. 2/151 useless extension candidates. Maximal degree in co-relation 445. Up to 126 conditions per place. [2024-11-07 11:22:34,836 INFO L140 encePairwiseOnDemand]: 18/22 looper letters, 42 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2024-11-07 11:22:34,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 46 transitions, 282 flow [2024-11-07 11:22:34,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:22:34,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:22:34,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 44 transitions. [2024-11-07 11:22:34,838 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-07 11:22:34,838 INFO L175 Difference]: Start difference. First operand has 32 places, 29 transitions, 130 flow. Second operand 4 states and 44 transitions. [2024-11-07 11:22:34,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 46 transitions, 282 flow [2024-11-07 11:22:34,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 46 transitions, 271 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-07 11:22:34,841 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 146 flow [2024-11-07 11:22:34,842 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2024-11-07 11:22:34,842 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 14 predicate places. [2024-11-07 11:22:34,843 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 146 flow [2024-11-07 11:22:34,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:34,843 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:34,843 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:22:34,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-07 11:22:35,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:35,047 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 11:22:35,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:35,048 INFO L85 PathProgramCache]: Analyzing trace with hash 2094827693, now seen corresponding path program 4 times [2024-11-07 11:22:35,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:35,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771364201] [2024-11-07 11:22:35,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:35,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:35,158 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-07 11:22:35,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:35,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771364201] [2024-11-07 11:22:35,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771364201] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:35,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485726681] [2024-11-07 11:22:35,159 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 11:22:35,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:35,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:35,161 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 11:22:35,164 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 11:22:35,241 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 11:22:35,241 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:22:35,242 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-07 11:22:35,243 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:35,311 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-07 11:22:35,312 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:22:35,360 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-07 11:22:35,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485726681] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:22:35,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:22:35,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-07 11:22:35,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143347129] [2024-11-07 11:22:35,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:22:35,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-07 11:22:35,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:35,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-07 11:22:35,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2024-11-07 11:22:35,362 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:22:35,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 146 flow. Second operand has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:35,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:35,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:22:35,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:35,442 INFO L124 PetriNetUnfolderBase]: 93/188 cut-off events. [2024-11-07 11:22:35,442 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2024-11-07 11:22:35,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 578 conditions, 188 events. 93/188 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 512 event pairs, 67 based on Foata normal form. 1/164 useless extension candidates. Maximal degree in co-relation 512. Up to 175 conditions per place. [2024-11-07 11:22:35,444 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 20 selfloop transitions, 12 changer transitions 0/33 dead transitions. [2024-11-07 11:22:35,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 33 transitions, 222 flow [2024-11-07 11:22:35,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 11:22:35,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 11:22:35,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 51 transitions. [2024-11-07 11:22:35,445 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33116883116883117 [2024-11-07 11:22:35,445 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 146 flow. Second operand 7 states and 51 transitions. [2024-11-07 11:22:35,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 33 transitions, 222 flow [2024-11-07 11:22:35,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 33 transitions, 218 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-07 11:22:35,448 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 188 flow [2024-11-07 11:22:35,449 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=188, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2024-11-07 11:22:35,449 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 20 predicate places. [2024-11-07 11:22:35,449 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 188 flow [2024-11-07 11:22:35,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:35,449 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:35,449 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:22:35,462 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 11:22:35,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:35,650 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 11:22:35,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:35,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1695419871, now seen corresponding path program 5 times [2024-11-07 11:22:35,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:35,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799073549] [2024-11-07 11:22:35,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:35,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:35,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:35,824 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:22:35,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:35,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799073549] [2024-11-07 11:22:35,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799073549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:35,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:22:35,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 11:22:35,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362230088] [2024-11-07 11:22:35,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:35,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:22:35,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:35,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:22:35,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:22:35,826 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:22:35,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 188 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:35,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:35,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:22:35,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:35,930 INFO L124 PetriNetUnfolderBase]: 105/208 cut-off events. [2024-11-07 11:22:35,930 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2024-11-07 11:22:35,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 620 conditions, 208 events. 105/208 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 627 event pairs, 39 based on Foata normal form. 8/190 useless extension candidates. Maximal degree in co-relation 542. Up to 126 conditions per place. [2024-11-07 11:22:35,933 INFO L140 encePairwiseOnDemand]: 18/22 looper letters, 45 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2024-11-07 11:22:35,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 50 transitions, 343 flow [2024-11-07 11:22:35,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:22:35,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:22:35,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 46 transitions. [2024-11-07 11:22:35,936 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5227272727272727 [2024-11-07 11:22:35,936 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 188 flow. Second operand 4 states and 46 transitions. [2024-11-07 11:22:35,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 50 transitions, 343 flow [2024-11-07 11:22:35,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 50 transitions, 319 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-07 11:22:35,938 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 189 flow [2024-11-07 11:22:35,938 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=189, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2024-11-07 11:22:35,938 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 21 predicate places. [2024-11-07 11:22:35,939 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 189 flow [2024-11-07 11:22:35,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:35,939 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:35,939 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:22:35,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 11:22:35,939 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 11:22:35,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:35,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1072477483, now seen corresponding path program 6 times [2024-11-07 11:22:35,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:35,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389220438] [2024-11-07 11:22:35,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:35,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:35,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:36,083 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:22:36,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:36,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389220438] [2024-11-07 11:22:36,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389220438] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:36,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:22:36,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 11:22:36,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243655074] [2024-11-07 11:22:36,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:36,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:22:36,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:36,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:22:36,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:22:36,084 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:22:36,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 189 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:36,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:36,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:22:36,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:36,165 INFO L124 PetriNetUnfolderBase]: 89/174 cut-off events. [2024-11-07 11:22:36,165 INFO L125 PetriNetUnfolderBase]: For 208/208 co-relation queries the response was YES. [2024-11-07 11:22:36,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 582 conditions, 174 events. 89/174 cut-off events. For 208/208 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 462 event pairs, 12 based on Foata normal form. 8/159 useless extension candidates. Maximal degree in co-relation 513. Up to 115 conditions per place. [2024-11-07 11:22:36,166 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 38 selfloop transitions, 6 changer transitions 1/46 dead transitions. [2024-11-07 11:22:36,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 46 transitions, 324 flow [2024-11-07 11:22:36,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:22:36,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:22:36,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 40 transitions. [2024-11-07 11:22:36,167 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-11-07 11:22:36,167 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 189 flow. Second operand 4 states and 40 transitions. [2024-11-07 11:22:36,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 46 transitions, 324 flow [2024-11-07 11:22:36,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 46 transitions, 317 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-07 11:22:36,169 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 212 flow [2024-11-07 11:22:36,169 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=212, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2024-11-07 11:22:36,170 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 25 predicate places. [2024-11-07 11:22:36,170 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 212 flow [2024-11-07 11:22:36,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:36,170 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:36,170 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:22:36,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-07 11:22:36,170 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 11:22:36,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:36,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1385481324, now seen corresponding path program 1 times [2024-11-07 11:22:36,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:36,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635595259] [2024-11-07 11:22:36,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:36,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:36,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:36,349 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-07 11:22:36,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:36,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635595259] [2024-11-07 11:22:36,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635595259] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:36,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:22:36,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 11:22:36,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261499956] [2024-11-07 11:22:36,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:36,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:22:36,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:36,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:22:36,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:22:36,351 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:22:36,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 212 flow. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 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 11:22:36,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:36,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:22:36,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:36,426 INFO L124 PetriNetUnfolderBase]: 90/173 cut-off events. [2024-11-07 11:22:36,426 INFO L125 PetriNetUnfolderBase]: For 247/247 co-relation queries the response was YES. [2024-11-07 11:22:36,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 588 conditions, 173 events. 90/173 cut-off events. For 247/247 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 435 event pairs, 15 based on Foata normal form. 7/155 useless extension candidates. Maximal degree in co-relation 516. Up to 135 conditions per place. [2024-11-07 11:22:36,428 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 41 selfloop transitions, 7 changer transitions 1/50 dead transitions. [2024-11-07 11:22:36,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 50 transitions, 361 flow [2024-11-07 11:22:36,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:22:36,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:22:36,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 42 transitions. [2024-11-07 11:22:36,429 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-11-07 11:22:36,429 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 212 flow. Second operand 4 states and 42 transitions. [2024-11-07 11:22:36,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 50 transitions, 361 flow [2024-11-07 11:22:36,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 50 transitions, 345 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-07 11:22:36,432 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 239 flow [2024-11-07 11:22:36,433 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=239, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2024-11-07 11:22:36,433 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 25 predicate places. [2024-11-07 11:22:36,434 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 239 flow [2024-11-07 11:22:36,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 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 11:22:36,435 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:36,435 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:22:36,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-07 11:22:36,435 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 11:22:36,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:36,435 INFO L85 PathProgramCache]: Analyzing trace with hash 134918016, now seen corresponding path program 2 times [2024-11-07 11:22:36,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:36,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723465169] [2024-11-07 11:22:36,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:36,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:36,642 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-07 11:22:36,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:36,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723465169] [2024-11-07 11:22:36,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723465169] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:36,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:22:36,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 11:22:36,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569285289] [2024-11-07 11:22:36,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:36,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:22:36,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:36,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:22:36,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:22:36,644 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:22:36,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 239 flow. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 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 11:22:36,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:36,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:22:36,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:36,718 INFO L124 PetriNetUnfolderBase]: 80/153 cut-off events. [2024-11-07 11:22:36,718 INFO L125 PetriNetUnfolderBase]: For 399/399 co-relation queries the response was YES. [2024-11-07 11:22:36,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 560 conditions, 153 events. 80/153 cut-off events. For 399/399 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 354 event pairs, 27 based on Foata normal form. 7/137 useless extension candidates. Maximal degree in co-relation 487. Up to 118 conditions per place. [2024-11-07 11:22:36,719 INFO L140 encePairwiseOnDemand]: 18/22 looper letters, 41 selfloop transitions, 7 changer transitions 1/50 dead transitions. [2024-11-07 11:22:36,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 50 transitions, 390 flow [2024-11-07 11:22:36,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:22:36,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:22:36,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 43 transitions. [2024-11-07 11:22:36,720 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48863636363636365 [2024-11-07 11:22:36,720 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 239 flow. Second operand 4 states and 43 transitions. [2024-11-07 11:22:36,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 50 transitions, 390 flow [2024-11-07 11:22:36,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 50 transitions, 381 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-07 11:22:36,722 INFO L231 Difference]: Finished difference. Result has 50 places, 39 transitions, 262 flow [2024-11-07 11:22:36,722 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=262, PETRI_PLACES=50, PETRI_TRANSITIONS=39} [2024-11-07 11:22:36,723 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 28 predicate places. [2024-11-07 11:22:36,723 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 262 flow [2024-11-07 11:22:36,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 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 11:22:36,723 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:36,723 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:22:36,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-07 11:22:36,724 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 11:22:36,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:36,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1888690876, now seen corresponding path program 1 times [2024-11-07 11:22:36,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:36,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725190902] [2024-11-07 11:22:36,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:36,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:36,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:37,588 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:22:37,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:37,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725190902] [2024-11-07 11:22:37,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725190902] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:37,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690930951] [2024-11-07 11:22:37,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:37,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:37,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:37,595 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 11:22:37,599 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 11:22:37,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:37,720 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-07 11:22:37,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:37,813 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:22:37,814 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 23 [2024-11-07 11:22:37,846 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:22:37,846 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:22:38,219 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-07 11:22:38,219 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 126 treesize of output 79 [2024-11-07 11:22:38,265 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:22:38,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690930951] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:22:38,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:22:38,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 22 [2024-11-07 11:22:38,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263581494] [2024-11-07 11:22:38,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:22:38,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-07 11:22:38,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:38,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-07 11:22:38,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2024-11-07 11:22:38,267 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:22:38,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 262 flow. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:38,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:38,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:22:38,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:38,970 INFO L124 PetriNetUnfolderBase]: 136/255 cut-off events. [2024-11-07 11:22:38,970 INFO L125 PetriNetUnfolderBase]: For 618/618 co-relation queries the response was YES. [2024-11-07 11:22:38,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 928 conditions, 255 events. 136/255 cut-off events. For 618/618 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 794 event pairs, 12 based on Foata normal form. 1/208 useless extension candidates. Maximal degree in co-relation 854. Up to 99 conditions per place. [2024-11-07 11:22:38,972 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 55 selfloop transitions, 21 changer transitions 12/89 dead transitions. [2024-11-07 11:22:38,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 89 transitions, 661 flow [2024-11-07 11:22:38,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-07 11:22:38,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-07 11:22:38,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 111 transitions. [2024-11-07 11:22:38,973 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36038961038961037 [2024-11-07 11:22:38,973 INFO L175 Difference]: Start difference. First operand has 50 places, 39 transitions, 262 flow. Second operand 14 states and 111 transitions. [2024-11-07 11:22:38,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 89 transitions, 661 flow [2024-11-07 11:22:38,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 89 transitions, 617 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-07 11:22:38,975 INFO L231 Difference]: Finished difference. Result has 66 places, 50 transitions, 392 flow [2024-11-07 11:22:38,975 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=392, PETRI_PLACES=66, PETRI_TRANSITIONS=50} [2024-11-07 11:22:38,976 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 44 predicate places. [2024-11-07 11:22:38,976 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 50 transitions, 392 flow [2024-11-07 11:22:38,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:38,976 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:38,976 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:22:38,989 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 11:22:39,177 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,SelfDestructingSolverStorable9 [2024-11-07 11:22:39,177 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 11:22:39,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:39,178 INFO L85 PathProgramCache]: Analyzing trace with hash 200974240, now seen corresponding path program 2 times [2024-11-07 11:22:39,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:39,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099698522] [2024-11-07 11:22:39,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:39,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:39,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:40,254 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-07 11:22:40,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:40,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099698522] [2024-11-07 11:22:40,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099698522] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:40,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59593467] [2024-11-07 11:22:40,255 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:22:40,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:40,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:40,258 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 11:22:40,267 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 11:22:40,368 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:22:40,368 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:22:40,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-07 11:22:40,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:40,498 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:22:40,499 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 19 [2024-11-07 11:22:40,527 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:22:40,527 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:22:40,818 INFO L349 Elim1Store]: treesize reduction 15, result has 80.5 percent of original size [2024-11-07 11:22:40,818 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 173 treesize of output 107 [2024-11-07 11:22:40,919 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:22:40,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59593467] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:22:40,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:22:40,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 8] total 26 [2024-11-07 11:22:40,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818780890] [2024-11-07 11:22:40,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:22:40,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-07 11:22:40,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:40,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-07 11:22:40,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2024-11-07 11:22:40,923 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:22:40,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 50 transitions, 392 flow. Second operand has 26 states, 26 states have (on average 4.884615384615385) internal successors, (127), 26 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:40,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:40,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:22:40,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:41,634 INFO L124 PetriNetUnfolderBase]: 145/273 cut-off events. [2024-11-07 11:22:41,634 INFO L125 PetriNetUnfolderBase]: For 812/812 co-relation queries the response was YES. [2024-11-07 11:22:41,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1193 conditions, 273 events. 145/273 cut-off events. For 812/812 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 865 event pairs, 17 based on Foata normal form. 1/274 useless extension candidates. Maximal degree in co-relation 1111. Up to 198 conditions per place. [2024-11-07 11:22:41,636 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 41 selfloop transitions, 33 changer transitions 3/78 dead transitions. [2024-11-07 11:22:41,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 78 transitions, 678 flow [2024-11-07 11:22:41,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-07 11:22:41,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-07 11:22:41,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 115 transitions. [2024-11-07 11:22:41,637 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2904040404040404 [2024-11-07 11:22:41,637 INFO L175 Difference]: Start difference. First operand has 66 places, 50 transitions, 392 flow. Second operand 18 states and 115 transitions. [2024-11-07 11:22:41,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 78 transitions, 678 flow [2024-11-07 11:22:41,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 78 transitions, 611 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-11-07 11:22:41,641 INFO L231 Difference]: Finished difference. Result has 82 places, 60 transitions, 492 flow [2024-11-07 11:22:41,641 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=492, PETRI_PLACES=82, PETRI_TRANSITIONS=60} [2024-11-07 11:22:41,642 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 60 predicate places. [2024-11-07 11:22:41,642 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 60 transitions, 492 flow [2024-11-07 11:22:41,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.884615384615385) internal successors, (127), 26 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:41,642 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:41,642 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:22:41,654 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 11:22:41,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-07 11:22:41,843 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 11:22:41,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:41,843 INFO L85 PathProgramCache]: Analyzing trace with hash 988624800, now seen corresponding path program 3 times [2024-11-07 11:22:41,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:41,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560734342] [2024-11-07 11:22:41,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:41,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:41,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:42,355 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:22:42,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:42,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560734342] [2024-11-07 11:22:42,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560734342] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:42,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642909840] [2024-11-07 11:22:42,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:22:42,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:42,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:42,357 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 11:22:42,358 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 11:22:42,449 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-07 11:22:42,449 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:22:42,450 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-07 11:22:42,452 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:42,637 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:22:42,637 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 19 [2024-11-07 11:22:42,680 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:22:42,681 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:22:43,115 INFO L349 Elim1Store]: treesize reduction 15, result has 80.5 percent of original size [2024-11-07 11:22:43,116 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 173 treesize of output 107 [2024-11-07 11:22:43,243 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:22:43,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642909840] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:22:43,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:22:43,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 21 [2024-11-07 11:22:43,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106186216] [2024-11-07 11:22:43,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:22:43,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-07 11:22:43,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:43,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-07 11:22:43,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2024-11-07 11:22:43,245 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:22:43,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 60 transitions, 492 flow. Second operand has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:43,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:43,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:22:43,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:43,646 INFO L124 PetriNetUnfolderBase]: 159/298 cut-off events. [2024-11-07 11:22:43,646 INFO L125 PetriNetUnfolderBase]: For 951/951 co-relation queries the response was YES. [2024-11-07 11:22:43,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1365 conditions, 298 events. 159/298 cut-off events. For 951/951 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 986 event pairs, 16 based on Foata normal form. 1/271 useless extension candidates. Maximal degree in co-relation 1293. Up to 214 conditions per place. [2024-11-07 11:22:43,648 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 58 selfloop transitions, 25 changer transitions 2/86 dead transitions. [2024-11-07 11:22:43,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 86 transitions, 800 flow [2024-11-07 11:22:43,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-07 11:22:43,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-07 11:22:43,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 92 transitions. [2024-11-07 11:22:43,649 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32167832167832167 [2024-11-07 11:22:43,649 INFO L175 Difference]: Start difference. First operand has 82 places, 60 transitions, 492 flow. Second operand 13 states and 92 transitions. [2024-11-07 11:22:43,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 86 transitions, 800 flow [2024-11-07 11:22:43,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 86 transitions, 706 flow, removed 15 selfloop flow, removed 14 redundant places. [2024-11-07 11:22:43,655 INFO L231 Difference]: Finished difference. Result has 82 places, 68 transitions, 530 flow [2024-11-07 11:22:43,656 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=530, PETRI_PLACES=82, PETRI_TRANSITIONS=68} [2024-11-07 11:22:43,656 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 60 predicate places. [2024-11-07 11:22:43,656 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 68 transitions, 530 flow [2024-11-07 11:22:43,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:43,658 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:43,658 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:22:43,670 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 11:22:43,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:43,863 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 11:22:43,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:43,863 INFO L85 PathProgramCache]: Analyzing trace with hash 981795176, now seen corresponding path program 4 times [2024-11-07 11:22:43,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:43,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589276169] [2024-11-07 11:22:43,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:43,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:44,333 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:22:44,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:44,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589276169] [2024-11-07 11:22:44,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589276169] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:44,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378938489] [2024-11-07 11:22:44,333 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 11:22:44,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:44,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:44,336 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 11:22:44,337 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 11:22:44,426 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 11:22:44,426 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:22:44,428 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-07 11:22:44,429 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:44,533 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:22:44,533 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 23 [2024-11-07 11:22:44,554 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:22:44,554 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:22:45,039 INFO L349 Elim1Store]: treesize reduction 15, result has 80.5 percent of original size [2024-11-07 11:22:45,040 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 173 treesize of output 107 [2024-11-07 11:22:45,099 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:22:45,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378938489] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:22:45,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:22:45,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 19 [2024-11-07 11:22:45,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236918540] [2024-11-07 11:22:45,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:22:45,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-07 11:22:45,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:45,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-07 11:22:45,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2024-11-07 11:22:45,100 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:22:45,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 68 transitions, 530 flow. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:45,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:45,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:22:45,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:45,427 INFO L124 PetriNetUnfolderBase]: 161/306 cut-off events. [2024-11-07 11:22:45,427 INFO L125 PetriNetUnfolderBase]: For 1216/1216 co-relation queries the response was YES. [2024-11-07 11:22:45,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1449 conditions, 306 events. 161/306 cut-off events. For 1216/1216 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1046 event pairs, 21 based on Foata normal form. 1/307 useless extension candidates. Maximal degree in co-relation 1375. Up to 220 conditions per place. [2024-11-07 11:22:45,429 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 58 selfloop transitions, 23 changer transitions 1/83 dead transitions. [2024-11-07 11:22:45,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 83 transitions, 760 flow [2024-11-07 11:22:45,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 11:22:45,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-07 11:22:45,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 83 transitions. [2024-11-07 11:22:45,430 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3143939393939394 [2024-11-07 11:22:45,430 INFO L175 Difference]: Start difference. First operand has 82 places, 68 transitions, 530 flow. Second operand 12 states and 83 transitions. [2024-11-07 11:22:45,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 83 transitions, 760 flow [2024-11-07 11:22:45,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 83 transitions, 718 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-11-07 11:22:45,435 INFO L231 Difference]: Finished difference. Result has 86 places, 69 transitions, 551 flow [2024-11-07 11:22:45,435 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=551, PETRI_PLACES=86, PETRI_TRANSITIONS=69} [2024-11-07 11:22:45,435 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 64 predicate places. [2024-11-07 11:22:45,435 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 69 transitions, 551 flow [2024-11-07 11:22:45,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:45,436 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:45,436 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:22:45,448 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 11:22:45,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:45,640 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 11:22:45,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:45,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1505476546, now seen corresponding path program 5 times [2024-11-07 11:22:45,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:45,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954685013] [2024-11-07 11:22:45,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:45,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:45,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:46,101 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:22:46,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:46,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954685013] [2024-11-07 11:22:46,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954685013] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:46,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694831215] [2024-11-07 11:22:46,102 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 11:22:46,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:46,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:46,105 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 11:22:46,106 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 11:22:46,259 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-07 11:22:46,259 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:22:46,260 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-07 11:22:46,265 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:46,336 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:22:46,336 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 19 [2024-11-07 11:22:46,395 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:22:46,395 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:22:46,671 INFO L349 Elim1Store]: treesize reduction 15, result has 80.5 percent of original size [2024-11-07 11:22:46,671 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 152 treesize of output 102 [2024-11-07 11:22:46,808 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:22:46,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694831215] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:22:46,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:22:46,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 21 [2024-11-07 11:22:46,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382776327] [2024-11-07 11:22:46,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:22:46,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-07 11:22:46,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:46,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-07 11:22:46,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2024-11-07 11:22:46,810 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:22:46,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 69 transitions, 551 flow. Second operand has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:46,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:46,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:22:46,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:47,416 INFO L124 PetriNetUnfolderBase]: 177/337 cut-off events. [2024-11-07 11:22:47,416 INFO L125 PetriNetUnfolderBase]: For 1439/1439 co-relation queries the response was YES. [2024-11-07 11:22:47,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1645 conditions, 337 events. 177/337 cut-off events. For 1439/1439 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1206 event pairs, 20 based on Foata normal form. 6/343 useless extension candidates. Maximal degree in co-relation 1571. Up to 229 conditions per place. [2024-11-07 11:22:47,419 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 61 selfloop transitions, 29 changer transitions 7/98 dead transitions. [2024-11-07 11:22:47,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 98 transitions, 908 flow [2024-11-07 11:22:47,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-07 11:22:47,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-07 11:22:47,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 105 transitions. [2024-11-07 11:22:47,420 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-11-07 11:22:47,420 INFO L175 Difference]: Start difference. First operand has 86 places, 69 transitions, 551 flow. Second operand 14 states and 105 transitions. [2024-11-07 11:22:47,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 98 transitions, 908 flow [2024-11-07 11:22:47,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 98 transitions, 860 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-11-07 11:22:47,426 INFO L231 Difference]: Finished difference. Result has 91 places, 74 transitions, 649 flow [2024-11-07 11:22:47,426 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=503, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=649, PETRI_PLACES=91, PETRI_TRANSITIONS=74} [2024-11-07 11:22:47,427 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 69 predicate places. [2024-11-07 11:22:47,427 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 74 transitions, 649 flow [2024-11-07 11:22:47,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:47,427 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:47,427 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:22:47,443 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 11:22:47,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:47,632 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 11:22:47,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:47,632 INFO L85 PathProgramCache]: Analyzing trace with hash -157063470, now seen corresponding path program 6 times [2024-11-07 11:22:47,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:47,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523274319] [2024-11-07 11:22:47,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:47,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:47,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:48,173 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:22:48,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:48,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523274319] [2024-11-07 11:22:48,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523274319] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:48,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931124885] [2024-11-07 11:22:48,174 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-07 11:22:48,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:48,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:48,178 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 11:22:48,179 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 11:22:48,279 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-07 11:22:48,279 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:22:48,282 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-07 11:22:48,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:48,351 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:22:48,351 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 19 [2024-11-07 11:22:48,394 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:22:48,395 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:22:48,680 INFO L349 Elim1Store]: treesize reduction 15, result has 80.5 percent of original size [2024-11-07 11:22:48,680 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 173 treesize of output 107 [2024-11-07 11:22:48,769 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:22:48,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931124885] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:22:48,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:22:48,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 21 [2024-11-07 11:22:48,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331807700] [2024-11-07 11:22:48,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:22:48,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-07 11:22:48,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:48,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-07 11:22:48,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2024-11-07 11:22:48,771 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:22:48,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 74 transitions, 649 flow. Second operand has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:48,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:48,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:22:48,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:49,222 INFO L124 PetriNetUnfolderBase]: 187/351 cut-off events. [2024-11-07 11:22:49,222 INFO L125 PetriNetUnfolderBase]: For 2537/2537 co-relation queries the response was YES. [2024-11-07 11:22:49,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1955 conditions, 351 events. 187/351 cut-off events. For 2537/2537 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1247 event pairs, 47 based on Foata normal form. 6/357 useless extension candidates. Maximal degree in co-relation 1878. Up to 250 conditions per place. [2024-11-07 11:22:49,224 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 66 selfloop transitions, 25 changer transitions 7/99 dead transitions. [2024-11-07 11:22:49,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 99 transitions, 1052 flow [2024-11-07 11:22:49,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-07 11:22:49,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-07 11:22:49,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 90 transitions. [2024-11-07 11:22:49,226 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3146853146853147 [2024-11-07 11:22:49,226 INFO L175 Difference]: Start difference. First operand has 91 places, 74 transitions, 649 flow. Second operand 13 states and 90 transitions. [2024-11-07 11:22:49,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 99 transitions, 1052 flow [2024-11-07 11:22:49,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 99 transitions, 917 flow, removed 41 selfloop flow, removed 11 redundant places. [2024-11-07 11:22:49,232 INFO L231 Difference]: Finished difference. Result has 93 places, 80 transitions, 660 flow [2024-11-07 11:22:49,232 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=660, PETRI_PLACES=93, PETRI_TRANSITIONS=80} [2024-11-07 11:22:49,232 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 71 predicate places. [2024-11-07 11:22:49,232 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 80 transitions, 660 flow [2024-11-07 11:22:49,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:49,232 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:49,232 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:22:49,248 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 11:22:49,432 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,SelfDestructingSolverStorable14 [2024-11-07 11:22:49,433 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 11:22:49,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:49,433 INFO L85 PathProgramCache]: Analyzing trace with hash 2026960210, now seen corresponding path program 7 times [2024-11-07 11:22:49,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:49,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590100684] [2024-11-07 11:22:49,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:49,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:49,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:49,892 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:22:49,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:49,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590100684] [2024-11-07 11:22:49,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590100684] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:49,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734204742] [2024-11-07 11:22:49,893 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-07 11:22:49,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:49,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:49,895 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 11:22:49,897 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 11:22:49,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:50,000 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-07 11:22:50,001 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:50,057 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:22:50,058 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 23 [2024-11-07 11:22:50,085 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:22:50,085 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:22:50,381 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-07 11:22:50,381 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 118 treesize of output 79 [2024-11-07 11:22:50,407 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:22:50,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734204742] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:22:50,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:22:50,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 22 [2024-11-07 11:22:50,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150063844] [2024-11-07 11:22:50,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:22:50,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-07 11:22:50,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:50,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-07 11:22:50,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2024-11-07 11:22:50,410 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:22:50,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 80 transitions, 660 flow. Second operand has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:50,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:50,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:22:50,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:50,942 INFO L124 PetriNetUnfolderBase]: 233/433 cut-off events. [2024-11-07 11:22:50,942 INFO L125 PetriNetUnfolderBase]: For 3543/3543 co-relation queries the response was YES. [2024-11-07 11:22:50,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2486 conditions, 433 events. 233/433 cut-off events. For 3543/3543 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1662 event pairs, 29 based on Foata normal form. 1/434 useless extension candidates. Maximal degree in co-relation 2408. Up to 185 conditions per place. [2024-11-07 11:22:50,946 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 81 selfloop transitions, 40 changer transitions 3/125 dead transitions. [2024-11-07 11:22:50,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 125 transitions, 1336 flow [2024-11-07 11:22:50,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-07 11:22:50,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-07 11:22:50,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 104 transitions. [2024-11-07 11:22:50,947 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33766233766233766 [2024-11-07 11:22:50,947 INFO L175 Difference]: Start difference. First operand has 93 places, 80 transitions, 660 flow. Second operand 14 states and 104 transitions. [2024-11-07 11:22:50,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 125 transitions, 1336 flow [2024-11-07 11:22:50,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 125 transitions, 1271 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-11-07 11:22:50,957 INFO L231 Difference]: Finished difference. Result has 100 places, 92 transitions, 912 flow [2024-11-07 11:22:50,957 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=912, PETRI_PLACES=100, PETRI_TRANSITIONS=92} [2024-11-07 11:22:50,957 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 78 predicate places. [2024-11-07 11:22:50,958 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 92 transitions, 912 flow [2024-11-07 11:22:50,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:50,958 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:50,959 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:22:50,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-07 11:22:51,159 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,SelfDestructingSolverStorable15 [2024-11-07 11:22:51,160 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 11:22:51,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:51,160 INFO L85 PathProgramCache]: Analyzing trace with hash 24937234, now seen corresponding path program 8 times [2024-11-07 11:22:51,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:51,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525428801] [2024-11-07 11:22:51,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:51,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:51,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:51,656 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:22:51,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:51,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525428801] [2024-11-07 11:22:51,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525428801] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:51,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601327477] [2024-11-07 11:22:51,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:22:51,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:51,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:51,661 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 11:22:51,665 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 11:22:51,783 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:22:51,783 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:22:51,784 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-07 11:22:51,785 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:51,867 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:22:51,867 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 19 [2024-11-07 11:22:51,889 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:22:51,889 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:22:52,145 INFO L349 Elim1Store]: treesize reduction 15, result has 80.5 percent of original size [2024-11-07 11:22:52,146 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 173 treesize of output 107 [2024-11-07 11:22:52,212 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:22:52,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601327477] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:22:52,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:22:52,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 19 [2024-11-07 11:22:52,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030048318] [2024-11-07 11:22:52,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:22:52,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-07 11:22:52,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:52,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-07 11:22:52,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2024-11-07 11:22:52,215 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:22:52,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 92 transitions, 912 flow. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:52,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:52,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:22:52,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:52,554 INFO L124 PetriNetUnfolderBase]: 237/444 cut-off events. [2024-11-07 11:22:52,554 INFO L125 PetriNetUnfolderBase]: For 4179/4179 co-relation queries the response was YES. [2024-11-07 11:22:52,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2715 conditions, 444 events. 237/444 cut-off events. For 4179/4179 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1741 event pairs, 57 based on Foata normal form. 1/445 useless extension candidates. Maximal degree in co-relation 2636. Up to 353 conditions per place. [2024-11-07 11:22:52,557 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 84 selfloop transitions, 28 changer transitions 2/115 dead transitions. [2024-11-07 11:22:52,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 115 transitions, 1320 flow [2024-11-07 11:22:52,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 11:22:52,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-07 11:22:52,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 87 transitions. [2024-11-07 11:22:52,558 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-11-07 11:22:52,558 INFO L175 Difference]: Start difference. First operand has 100 places, 92 transitions, 912 flow. Second operand 12 states and 87 transitions. [2024-11-07 11:22:52,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 115 transitions, 1320 flow [2024-11-07 11:22:52,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 115 transitions, 1138 flow, removed 67 selfloop flow, removed 8 redundant places. [2024-11-07 11:22:52,567 INFO L231 Difference]: Finished difference. Result has 105 places, 100 transitions, 929 flow [2024-11-07 11:22:52,567 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=929, PETRI_PLACES=105, PETRI_TRANSITIONS=100} [2024-11-07 11:22:52,568 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 83 predicate places. [2024-11-07 11:22:52,568 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 100 transitions, 929 flow [2024-11-07 11:22:52,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:52,568 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:52,568 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:22:52,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-07 11:22:52,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-07 11:22:52,769 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 11:22:52,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:52,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1571983864, now seen corresponding path program 9 times [2024-11-07 11:22:52,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:52,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744600422] [2024-11-07 11:22:52,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:52,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:52,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:53,217 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:22:53,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:53,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744600422] [2024-11-07 11:22:53,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744600422] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:53,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222034087] [2024-11-07 11:22:53,217 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:22:53,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:53,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:53,219 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 11:22:53,220 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 11:22:53,317 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-07 11:22:53,317 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:22:53,318 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-07 11:22:53,331 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:53,395 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:22:53,396 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 19 [2024-11-07 11:22:53,438 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:22:53,439 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:22:53,700 INFO L349 Elim1Store]: treesize reduction 15, result has 80.5 percent of original size [2024-11-07 11:22:53,701 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 173 treesize of output 107 [2024-11-07 11:22:53,797 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:22:53,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222034087] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:22:53,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:22:53,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 21 [2024-11-07 11:22:53,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209809452] [2024-11-07 11:22:53,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:22:53,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-07 11:22:53,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:53,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-07 11:22:53,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2024-11-07 11:22:53,799 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:22:53,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 100 transitions, 929 flow. Second operand has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:53,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:53,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:22:53,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:54,328 INFO L124 PetriNetUnfolderBase]: 237/442 cut-off events. [2024-11-07 11:22:54,328 INFO L125 PetriNetUnfolderBase]: For 2754/2754 co-relation queries the response was YES. [2024-11-07 11:22:54,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2428 conditions, 442 events. 237/442 cut-off events. For 2754/2754 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1725 event pairs, 57 based on Foata normal form. 1/443 useless extension candidates. Maximal degree in co-relation 2349. Up to 340 conditions per place. [2024-11-07 11:22:54,334 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 85 selfloop transitions, 28 changer transitions 4/118 dead transitions. [2024-11-07 11:22:54,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 118 transitions, 1263 flow [2024-11-07 11:22:54,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-07 11:22:54,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-07 11:22:54,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 91 transitions. [2024-11-07 11:22:54,340 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-11-07 11:22:54,340 INFO L175 Difference]: Start difference. First operand has 105 places, 100 transitions, 929 flow. Second operand 13 states and 91 transitions. [2024-11-07 11:22:54,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 118 transitions, 1263 flow [2024-11-07 11:22:54,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 118 transitions, 1161 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-11-07 11:22:54,355 INFO L231 Difference]: Finished difference. Result has 111 places, 100 transitions, 898 flow [2024-11-07 11:22:54,355 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=827, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=898, PETRI_PLACES=111, PETRI_TRANSITIONS=100} [2024-11-07 11:22:54,356 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 89 predicate places. [2024-11-07 11:22:54,356 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 100 transitions, 898 flow [2024-11-07 11:22:54,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:54,356 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:54,356 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:22:54,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-07 11:22:54,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-07 11:22:54,557 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 11:22:54,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:54,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1520102433, now seen corresponding path program 10 times [2024-11-07 11:22:54,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:54,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820070720] [2024-11-07 11:22:54,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:54,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:54,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:55,007 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:22:55,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:55,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820070720] [2024-11-07 11:22:55,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820070720] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:55,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799224133] [2024-11-07 11:22:55,008 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 11:22:55,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:55,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:55,010 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 11:22:55,012 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 11:22:55,124 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 11:22:55,124 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:22:55,125 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-07 11:22:55,126 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:55,216 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:22:55,216 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:22:55,375 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-07 11:22:55,375 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 32 treesize of output 48 [2024-11-07 11:22:55,385 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:22:55,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799224133] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:22:55,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:22:55,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 18 [2024-11-07 11:22:55,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683587704] [2024-11-07 11:22:55,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:22:55,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-07 11:22:55,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:55,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-07 11:22:55,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2024-11-07 11:22:55,386 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:22:55,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 100 transitions, 898 flow. Second operand has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:55,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:55,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:22:55,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:55,647 INFO L124 PetriNetUnfolderBase]: 249/464 cut-off events. [2024-11-07 11:22:55,647 INFO L125 PetriNetUnfolderBase]: For 2909/2909 co-relation queries the response was YES. [2024-11-07 11:22:55,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2518 conditions, 464 events. 249/464 cut-off events. For 2909/2909 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1866 event pairs, 27 based on Foata normal form. 5/469 useless extension candidates. Maximal degree in co-relation 2438. Up to 210 conditions per place. [2024-11-07 11:22:55,651 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 91 selfloop transitions, 38 changer transitions 2/132 dead transitions. [2024-11-07 11:22:55,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 132 transitions, 1426 flow [2024-11-07 11:22:55,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 11:22:55,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-07 11:22:55,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 84 transitions. [2024-11-07 11:22:55,652 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-11-07 11:22:55,652 INFO L175 Difference]: Start difference. First operand has 111 places, 100 transitions, 898 flow. Second operand 10 states and 84 transitions. [2024-11-07 11:22:55,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 132 transitions, 1426 flow [2024-11-07 11:22:55,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 132 transitions, 1364 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-11-07 11:22:55,660 INFO L231 Difference]: Finished difference. Result has 111 places, 102 transitions, 956 flow [2024-11-07 11:22:55,661 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=956, PETRI_PLACES=111, PETRI_TRANSITIONS=102} [2024-11-07 11:22:55,661 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 89 predicate places. [2024-11-07 11:22:55,661 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 102 transitions, 956 flow [2024-11-07 11:22:55,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:55,662 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:55,662 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:22:55,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-07 11:22:55,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:55,867 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 11:22:55,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:55,867 INFO L85 PathProgramCache]: Analyzing trace with hash 760290434, now seen corresponding path program 11 times [2024-11-07 11:22:55,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:55,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947863362] [2024-11-07 11:22:55,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:55,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:55,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:56,313 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:22:56,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:56,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947863362] [2024-11-07 11:22:56,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947863362] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:56,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346353068] [2024-11-07 11:22:56,313 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 11:22:56,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:56,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:56,315 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 11:22:56,319 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 11:22:56,525 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-07 11:22:56,525 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:22:56,527 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-07 11:22:56,530 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:56,613 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:22:56,613 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 65 treesize of output 45 [2024-11-07 11:22:56,649 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:22:56,649 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:22:56,797 INFO L349 Elim1Store]: treesize reduction 24, result has 65.2 percent of original size [2024-11-07 11:22:56,798 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 63 treesize of output 67 [2024-11-07 11:22:56,826 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:22:56,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346353068] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:22:56,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:22:56,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 21 [2024-11-07 11:22:56,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944261833] [2024-11-07 11:22:56,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:22:56,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-07 11:22:56,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:56,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-07 11:22:56,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2024-11-07 11:22:56,828 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:22:56,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 102 transitions, 956 flow. Second operand has 21 states, 21 states have (on average 5.238095238095238) internal successors, (110), 21 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:56,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:56,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:22:56,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:57,150 INFO L124 PetriNetUnfolderBase]: 255/474 cut-off events. [2024-11-07 11:22:57,150 INFO L125 PetriNetUnfolderBase]: For 3305/3305 co-relation queries the response was YES. [2024-11-07 11:22:57,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2652 conditions, 474 events. 255/474 cut-off events. For 3305/3305 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1916 event pairs, 53 based on Foata normal form. 4/478 useless extension candidates. Maximal degree in co-relation 2570. Up to 194 conditions per place. [2024-11-07 11:22:57,154 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 83 selfloop transitions, 38 changer transitions 4/126 dead transitions. [2024-11-07 11:22:57,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 126 transitions, 1391 flow [2024-11-07 11:22:57,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 11:22:57,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 11:22:57,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 78 transitions. [2024-11-07 11:22:57,155 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-11-07 11:22:57,155 INFO L175 Difference]: Start difference. First operand has 111 places, 102 transitions, 956 flow. Second operand 9 states and 78 transitions. [2024-11-07 11:22:57,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 126 transitions, 1391 flow [2024-11-07 11:22:57,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 126 transitions, 1297 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-11-07 11:22:57,164 INFO L231 Difference]: Finished difference. Result has 112 places, 103 transitions, 963 flow [2024-11-07 11:22:57,164 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=863, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=963, PETRI_PLACES=112, PETRI_TRANSITIONS=103} [2024-11-07 11:22:57,164 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 90 predicate places. [2024-11-07 11:22:57,164 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 103 transitions, 963 flow [2024-11-07 11:22:57,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.238095238095238) internal successors, (110), 21 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:57,165 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:57,165 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:22:57,182 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 11:22:57,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:57,368 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 11:22:57,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:57,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1283844297, now seen corresponding path program 12 times [2024-11-07 11:22:57,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:57,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609243615] [2024-11-07 11:22:57,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:57,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:57,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:57,730 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:22:57,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:57,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609243615] [2024-11-07 11:22:57,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609243615] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:57,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175955864] [2024-11-07 11:22:57,730 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-07 11:22:57,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:57,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:57,732 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 11:22:57,733 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 11:22:57,839 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-07 11:22:57,839 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:22:57,840 INFO L255 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-07 11:22:57,841 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:57,974 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:22:57,975 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 46 treesize of output 30 [2024-11-07 11:22:58,024 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:22:58,025 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:22:58,153 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-07 11:22:58,154 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 32 treesize of output 48 [2024-11-07 11:22:58,184 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:22:58,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175955864] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:22:58,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:22:58,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 19 [2024-11-07 11:22:58,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048756228] [2024-11-07 11:22:58,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:22:58,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-07 11:22:58,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:58,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-07 11:22:58,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2024-11-07 11:22:58,185 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:22:58,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 103 transitions, 963 flow. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:58,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:58,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:22:58,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:58,770 INFO L124 PetriNetUnfolderBase]: 294/557 cut-off events. [2024-11-07 11:22:58,770 INFO L125 PetriNetUnfolderBase]: For 3755/3755 co-relation queries the response was YES. [2024-11-07 11:22:58,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3106 conditions, 557 events. 294/557 cut-off events. For 3755/3755 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2410 event pairs, 33 based on Foata normal form. 5/562 useless extension candidates. Maximal degree in co-relation 3026. Up to 202 conditions per place. [2024-11-07 11:22:58,774 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 109 selfloop transitions, 51 changer transitions 4/165 dead transitions. [2024-11-07 11:22:58,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 165 transitions, 1757 flow [2024-11-07 11:22:58,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-07 11:22:58,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-07 11:22:58,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 141 transitions. [2024-11-07 11:22:58,776 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3770053475935829 [2024-11-07 11:22:58,776 INFO L175 Difference]: Start difference. First operand has 112 places, 103 transitions, 963 flow. Second operand 17 states and 141 transitions. [2024-11-07 11:22:58,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 165 transitions, 1757 flow [2024-11-07 11:22:58,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 165 transitions, 1695 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-11-07 11:22:58,785 INFO L231 Difference]: Finished difference. Result has 127 places, 111 transitions, 1140 flow [2024-11-07 11:22:58,786 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=901, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1140, PETRI_PLACES=127, PETRI_TRANSITIONS=111} [2024-11-07 11:22:58,786 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 105 predicate places. [2024-11-07 11:22:58,787 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 111 transitions, 1140 flow [2024-11-07 11:22:58,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:58,787 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:58,787 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:22:58,800 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 11:22:58,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:58,992 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 11:22:58,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:58,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1724688555, now seen corresponding path program 13 times [2024-11-07 11:22:58,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:58,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824941811] [2024-11-07 11:22:58,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:58,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:59,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:59,315 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:22:59,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:59,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824941811] [2024-11-07 11:22:59,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824941811] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:59,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900462378] [2024-11-07 11:22:59,315 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-07 11:22:59,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:59,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:59,317 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 11:22:59,319 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 11:22:59,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:59,430 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-07 11:22:59,432 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:59,506 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-07 11:22:59,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 9 [2024-11-07 11:22:59,508 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:22:59,508 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:22:59,616 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-07 11:22:59,617 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 32 treesize of output 48 [2024-11-07 11:22:59,629 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:22:59,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900462378] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:22:59,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:22:59,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 18 [2024-11-07 11:22:59,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550005608] [2024-11-07 11:22:59,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:22:59,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-07 11:22:59,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:59,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-07 11:22:59,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2024-11-07 11:22:59,631 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:22:59,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 111 transitions, 1140 flow. Second operand has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:59,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:59,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:22:59,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:00,079 INFO L124 PetriNetUnfolderBase]: 315/590 cut-off events. [2024-11-07 11:23:00,079 INFO L125 PetriNetUnfolderBase]: For 4795/4795 co-relation queries the response was YES. [2024-11-07 11:23:00,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3548 conditions, 590 events. 315/590 cut-off events. For 4795/4795 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2596 event pairs, 33 based on Foata normal form. 5/595 useless extension candidates. Maximal degree in co-relation 3462. Up to 213 conditions per place. [2024-11-07 11:23:00,091 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 99 selfloop transitions, 47 changer transitions 2/149 dead transitions. [2024-11-07 11:23:00,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 149 transitions, 1773 flow [2024-11-07 11:23:00,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 11:23:00,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-07 11:23:00,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 98 transitions. [2024-11-07 11:23:00,093 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3712121212121212 [2024-11-07 11:23:00,093 INFO L175 Difference]: Start difference. First operand has 127 places, 111 transitions, 1140 flow. Second operand 12 states and 98 transitions. [2024-11-07 11:23:00,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 149 transitions, 1773 flow [2024-11-07 11:23:00,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 149 transitions, 1622 flow, removed 33 selfloop flow, removed 11 redundant places. [2024-11-07 11:23:00,106 INFO L231 Difference]: Finished difference. Result has 128 places, 114 transitions, 1148 flow [2024-11-07 11:23:00,107 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=982, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1148, PETRI_PLACES=128, PETRI_TRANSITIONS=114} [2024-11-07 11:23:00,107 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 106 predicate places. [2024-11-07 11:23:00,107 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 114 transitions, 1148 flow [2024-11-07 11:23:00,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:00,107 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:00,107 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:23:00,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-07 11:23:00,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:00,308 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 11:23:00,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:00,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1611925751, now seen corresponding path program 14 times [2024-11-07 11:23:00,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:00,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882485850] [2024-11-07 11:23:00,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:00,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:00,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:00,701 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:00,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:00,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882485850] [2024-11-07 11:23:00,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882485850] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:23:00,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789848644] [2024-11-07 11:23:00,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:23:00,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:00,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:23:00,703 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 11:23:00,704 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 11:23:00,831 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:23:00,832 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:23:00,833 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-07 11:23:00,834 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:23:00,994 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:23:00,994 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 65 treesize of output 41 [2024-11-07 11:23:01,025 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:01,025 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:23:01,139 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-07 11:23:01,139 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 32 treesize of output 48 [2024-11-07 11:23:01,208 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:01,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789848644] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:23:01,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:23:01,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 20 [2024-11-07 11:23:01,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738920183] [2024-11-07 11:23:01,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:23:01,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-07 11:23:01,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:01,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-07 11:23:01,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2024-11-07 11:23:01,210 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:23:01,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 114 transitions, 1148 flow. Second operand has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:01,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:01,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:23:01,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:01,821 INFO L124 PetriNetUnfolderBase]: 309/568 cut-off events. [2024-11-07 11:23:01,821 INFO L125 PetriNetUnfolderBase]: For 3956/3956 co-relation queries the response was YES. [2024-11-07 11:23:01,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3375 conditions, 568 events. 309/568 cut-off events. For 3956/3956 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2437 event pairs, 30 based on Foata normal form. 2/570 useless extension candidates. Maximal degree in co-relation 3288. Up to 202 conditions per place. [2024-11-07 11:23:01,826 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 91 selfloop transitions, 49 changer transitions 6/147 dead transitions. [2024-11-07 11:23:01,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 147 transitions, 1702 flow [2024-11-07 11:23:01,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-07 11:23:01,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-07 11:23:01,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 104 transitions. [2024-11-07 11:23:01,829 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-11-07 11:23:01,829 INFO L175 Difference]: Start difference. First operand has 128 places, 114 transitions, 1148 flow. Second operand 13 states and 104 transitions. [2024-11-07 11:23:01,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 147 transitions, 1702 flow [2024-11-07 11:23:01,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 147 transitions, 1606 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-11-07 11:23:01,846 INFO L231 Difference]: Finished difference. Result has 128 places, 111 transitions, 1128 flow [2024-11-07 11:23:01,846 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1128, PETRI_PLACES=128, PETRI_TRANSITIONS=111} [2024-11-07 11:23:01,847 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 106 predicate places. [2024-11-07 11:23:01,847 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 111 transitions, 1128 flow [2024-11-07 11:23:01,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:01,847 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:01,847 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:23:01,863 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 11:23:02,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:02,052 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 11:23:02,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:02,053 INFO L85 PathProgramCache]: Analyzing trace with hash 369797268, now seen corresponding path program 15 times [2024-11-07 11:23:02,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:02,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953686185] [2024-11-07 11:23:02,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:02,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:02,546 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:02,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:02,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953686185] [2024-11-07 11:23:02,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953686185] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:23:02,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366831714] [2024-11-07 11:23:02,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:23:02,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:02,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:23:02,551 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 11:23:02,561 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 11:23:02,682 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-07 11:23:02,682 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:23:02,684 INFO L255 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-07 11:23:02,685 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:23:02,780 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:23:02,781 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 65 treesize of output 41 [2024-11-07 11:23:02,842 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:02,842 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:23:02,955 INFO L349 Elim1Store]: treesize reduction 11, result has 85.7 percent of original size [2024-11-07 11:23:02,955 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 44 treesize of output 77 [2024-11-07 11:23:02,991 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:02,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366831714] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:23:02,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:23:02,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 19 [2024-11-07 11:23:02,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371939556] [2024-11-07 11:23:02,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:23:02,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-07 11:23:02,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:02,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-07 11:23:02,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2024-11-07 11:23:02,992 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:23:02,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 111 transitions, 1128 flow. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:02,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:02,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:23:02,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:03,339 INFO L124 PetriNetUnfolderBase]: 315/581 cut-off events. [2024-11-07 11:23:03,339 INFO L125 PetriNetUnfolderBase]: For 4398/4398 co-relation queries the response was YES. [2024-11-07 11:23:03,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3483 conditions, 581 events. 315/581 cut-off events. For 4398/4398 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2499 event pairs, 101 based on Foata normal form. 6/587 useless extension candidates. Maximal degree in co-relation 3415. Up to 457 conditions per place. [2024-11-07 11:23:03,344 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 105 selfloop transitions, 27 changer transitions 5/138 dead transitions. [2024-11-07 11:23:03,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 138 transitions, 1615 flow [2024-11-07 11:23:03,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 11:23:03,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-07 11:23:03,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 93 transitions. [2024-11-07 11:23:03,346 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-11-07 11:23:03,346 INFO L175 Difference]: Start difference. First operand has 128 places, 111 transitions, 1128 flow. Second operand 12 states and 93 transitions. [2024-11-07 11:23:03,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 138 transitions, 1615 flow [2024-11-07 11:23:03,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 138 transitions, 1511 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-11-07 11:23:03,356 INFO L231 Difference]: Finished difference. Result has 128 places, 113 transitions, 1139 flow [2024-11-07 11:23:03,356 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1028, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1139, PETRI_PLACES=128, PETRI_TRANSITIONS=113} [2024-11-07 11:23:03,357 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 106 predicate places. [2024-11-07 11:23:03,357 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 113 transitions, 1139 flow [2024-11-07 11:23:03,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:03,358 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:03,358 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:23:03,372 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-07 11:23:03,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:03,559 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 11:23:03,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:03,560 INFO L85 PathProgramCache]: Analyzing trace with hash 996485234, now seen corresponding path program 16 times [2024-11-07 11:23:03,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:03,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712434549] [2024-11-07 11:23:03,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:03,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:03,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:03,923 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:03,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:03,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712434549] [2024-11-07 11:23:03,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712434549] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:23:03,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308403664] [2024-11-07 11:23:03,924 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 11:23:03,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:03,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:23:03,926 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 11:23:03,927 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 11:23:04,048 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 11:23:04,048 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:23:04,050 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-07 11:23:04,051 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:23:04,142 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:23:04,142 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 46 treesize of output 34 [2024-11-07 11:23:04,175 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:04,176 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:23:04,292 INFO L349 Elim1Store]: treesize reduction 11, result has 85.7 percent of original size [2024-11-07 11:23:04,293 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 71 treesize of output 88 [2024-11-07 11:23:04,329 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:04,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308403664] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:23:04,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:23:04,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 18 [2024-11-07 11:23:04,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235712449] [2024-11-07 11:23:04,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:23:04,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-07 11:23:04,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:04,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-07 11:23:04,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-11-07 11:23:04,334 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:23:04,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 113 transitions, 1139 flow. Second operand has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:04,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:04,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:23:04,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:04,640 INFO L124 PetriNetUnfolderBase]: 312/577 cut-off events. [2024-11-07 11:23:04,641 INFO L125 PetriNetUnfolderBase]: For 4906/4906 co-relation queries the response was YES. [2024-11-07 11:23:04,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3488 conditions, 577 events. 312/577 cut-off events. For 4906/4906 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2476 event pairs, 105 based on Foata normal form. 6/583 useless extension candidates. Maximal degree in co-relation 3401. Up to 452 conditions per place. [2024-11-07 11:23:04,646 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 99 selfloop transitions, 28 changer transitions 0/128 dead transitions. [2024-11-07 11:23:04,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 128 transitions, 1512 flow [2024-11-07 11:23:04,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 11:23:04,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 11:23:04,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 72 transitions. [2024-11-07 11:23:04,647 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-11-07 11:23:04,647 INFO L175 Difference]: Start difference. First operand has 128 places, 113 transitions, 1139 flow. Second operand 9 states and 72 transitions. [2024-11-07 11:23:04,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 128 transitions, 1512 flow [2024-11-07 11:23:04,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 128 transitions, 1397 flow, removed 24 selfloop flow, removed 10 redundant places. [2024-11-07 11:23:04,658 INFO L231 Difference]: Finished difference. Result has 125 places, 111 transitions, 1108 flow [2024-11-07 11:23:04,658 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1021, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1108, PETRI_PLACES=125, PETRI_TRANSITIONS=111} [2024-11-07 11:23:04,658 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 103 predicate places. [2024-11-07 11:23:04,658 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 111 transitions, 1108 flow [2024-11-07 11:23:04,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:04,659 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:04,659 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:23:04,672 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-07 11:23:04,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:04,860 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 11:23:04,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:04,860 INFO L85 PathProgramCache]: Analyzing trace with hash -189752709, now seen corresponding path program 17 times [2024-11-07 11:23:04,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:04,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098007598] [2024-11-07 11:23:04,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:04,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:04,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:05,333 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:05,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:05,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098007598] [2024-11-07 11:23:05,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098007598] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:23:05,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393922873] [2024-11-07 11:23:05,334 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 11:23:05,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:05,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:23:05,336 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 11:23:05,339 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 11:23:05,507 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-07 11:23:05,508 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:23:05,509 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-07 11:23:05,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:23:05,569 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:23:05,569 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 65 treesize of output 45 [2024-11-07 11:23:05,597 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:05,597 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:23:05,710 INFO L349 Elim1Store]: treesize reduction 11, result has 85.7 percent of original size [2024-11-07 11:23:05,710 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 44 treesize of output 77 [2024-11-07 11:23:05,765 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:05,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393922873] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:23:05,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:23:05,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 21 [2024-11-07 11:23:05,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120104854] [2024-11-07 11:23:05,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:23:05,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-07 11:23:05,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:05,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-07 11:23:05,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2024-11-07 11:23:05,770 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:23:05,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 111 transitions, 1108 flow. Second operand has 21 states, 21 states have (on average 5.333333333333333) internal successors, (112), 21 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:05,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:05,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:23:05,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:06,121 INFO L124 PetriNetUnfolderBase]: 335/626 cut-off events. [2024-11-07 11:23:06,121 INFO L125 PetriNetUnfolderBase]: For 5125/5125 co-relation queries the response was YES. [2024-11-07 11:23:06,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3714 conditions, 626 events. 335/626 cut-off events. For 5125/5125 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2762 event pairs, 109 based on Foata normal form. 5/631 useless extension candidates. Maximal degree in co-relation 3627. Up to 482 conditions per place. [2024-11-07 11:23:06,126 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 116 selfloop transitions, 32 changer transitions 0/149 dead transitions. [2024-11-07 11:23:06,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 149 transitions, 1684 flow [2024-11-07 11:23:06,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-07 11:23:06,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-07 11:23:06,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 105 transitions. [2024-11-07 11:23:06,127 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36713286713286714 [2024-11-07 11:23:06,127 INFO L175 Difference]: Start difference. First operand has 125 places, 111 transitions, 1108 flow. Second operand 13 states and 105 transitions. [2024-11-07 11:23:06,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 149 transitions, 1684 flow [2024-11-07 11:23:06,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 149 transitions, 1620 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-11-07 11:23:06,140 INFO L231 Difference]: Finished difference. Result has 133 places, 116 transitions, 1217 flow [2024-11-07 11:23:06,140 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1044, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1217, PETRI_PLACES=133, PETRI_TRANSITIONS=116} [2024-11-07 11:23:06,140 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 111 predicate places. [2024-11-07 11:23:06,140 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 116 transitions, 1217 flow [2024-11-07 11:23:06,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.333333333333333) internal successors, (112), 21 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:06,141 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:06,141 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:23:06,154 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 11:23:06,344 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,SelfDestructingSolverStorable25 [2024-11-07 11:23:06,345 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 11:23:06,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:06,345 INFO L85 PathProgramCache]: Analyzing trace with hash 2114018255, now seen corresponding path program 18 times [2024-11-07 11:23:06,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:06,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978157302] [2024-11-07 11:23:06,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:06,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:06,776 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:06,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:06,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978157302] [2024-11-07 11:23:06,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978157302] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:23:06,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963073850] [2024-11-07 11:23:06,776 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-07 11:23:06,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:06,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:23:06,779 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 11:23:06,780 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 11:23:06,912 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-07 11:23:06,912 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:23:06,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-07 11:23:06,915 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:23:07,049 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:23:07,049 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 46 treesize of output 30 [2024-11-07 11:23:07,113 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:07,114 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:23:07,261 INFO L349 Elim1Store]: treesize reduction 11, result has 85.7 percent of original size [2024-11-07 11:23:07,262 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 71 treesize of output 88 [2024-11-07 11:23:07,325 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:07,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963073850] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:23:07,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:23:07,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 8] total 21 [2024-11-07 11:23:07,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654798970] [2024-11-07 11:23:07,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:23:07,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-07 11:23:07,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:07,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-07 11:23:07,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2024-11-07 11:23:07,326 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:23:07,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 116 transitions, 1217 flow. Second operand has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:07,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:07,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:23:07,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:07,874 INFO L124 PetriNetUnfolderBase]: 375/727 cut-off events. [2024-11-07 11:23:07,874 INFO L125 PetriNetUnfolderBase]: For 7077/7077 co-relation queries the response was YES. [2024-11-07 11:23:07,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4390 conditions, 727 events. 375/727 cut-off events. For 7077/7077 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3458 event pairs, 131 based on Foata normal form. 13/740 useless extension candidates. Maximal degree in co-relation 4300. Up to 550 conditions per place. [2024-11-07 11:23:07,880 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 129 selfloop transitions, 37 changer transitions 0/167 dead transitions. [2024-11-07 11:23:07,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 167 transitions, 1939 flow [2024-11-07 11:23:07,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-07 11:23:07,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-07 11:23:07,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 134 transitions. [2024-11-07 11:23:07,882 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3582887700534759 [2024-11-07 11:23:07,882 INFO L175 Difference]: Start difference. First operand has 133 places, 116 transitions, 1217 flow. Second operand 17 states and 134 transitions. [2024-11-07 11:23:07,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 167 transitions, 1939 flow [2024-11-07 11:23:07,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 167 transitions, 1799 flow, removed 43 selfloop flow, removed 10 redundant places. [2024-11-07 11:23:07,898 INFO L231 Difference]: Finished difference. Result has 146 places, 127 transitions, 1362 flow [2024-11-07 11:23:07,898 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1090, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1362, PETRI_PLACES=146, PETRI_TRANSITIONS=127} [2024-11-07 11:23:07,899 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 124 predicate places. [2024-11-07 11:23:07,899 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 127 transitions, 1362 flow [2024-11-07 11:23:07,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:07,899 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:07,899 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:23:07,912 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 11:23:08,103 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,SelfDestructingSolverStorable26 [2024-11-07 11:23:08,104 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 11:23:08,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:08,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1567141995, now seen corresponding path program 19 times [2024-11-07 11:23:08,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:08,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295525893] [2024-11-07 11:23:08,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:08,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:08,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:08,424 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:08,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:08,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295525893] [2024-11-07 11:23:08,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295525893] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:23:08,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187602674] [2024-11-07 11:23:08,424 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-07 11:23:08,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:08,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:23:08,427 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 11:23:08,428 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 11:23:08,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:08,556 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-07 11:23:08,557 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:23:08,641 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-07 11:23:08,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 9 [2024-11-07 11:23:08,643 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:08,643 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:23:08,769 INFO L349 Elim1Store]: treesize reduction 11, result has 85.7 percent of original size [2024-11-07 11:23:08,769 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 44 treesize of output 77 [2024-11-07 11:23:08,802 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:08,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187602674] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:23:08,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:23:08,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 18 [2024-11-07 11:23:08,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894629672] [2024-11-07 11:23:08,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:23:08,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-07 11:23:08,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:08,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-07 11:23:08,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-11-07 11:23:08,803 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:23:08,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 127 transitions, 1362 flow. Second operand has 18 states, 18 states have (on average 5.388888888888889) internal successors, (97), 18 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:08,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:08,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:23:08,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:09,103 INFO L124 PetriNetUnfolderBase]: 373/714 cut-off events. [2024-11-07 11:23:09,104 INFO L125 PetriNetUnfolderBase]: For 6562/6562 co-relation queries the response was YES. [2024-11-07 11:23:09,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4491 conditions, 714 events. 373/714 cut-off events. For 6562/6562 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3369 event pairs, 138 based on Foata normal form. 5/719 useless extension candidates. Maximal degree in co-relation 4397. Up to 594 conditions per place. [2024-11-07 11:23:09,110 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 115 selfloop transitions, 27 changer transitions 0/143 dead transitions. [2024-11-07 11:23:09,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 143 transitions, 1780 flow [2024-11-07 11:23:09,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 11:23:09,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 11:23:09,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 71 transitions. [2024-11-07 11:23:09,111 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35858585858585856 [2024-11-07 11:23:09,111 INFO L175 Difference]: Start difference. First operand has 146 places, 127 transitions, 1362 flow. Second operand 9 states and 71 transitions. [2024-11-07 11:23:09,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 143 transitions, 1780 flow [2024-11-07 11:23:09,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 143 transitions, 1670 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-11-07 11:23:09,129 INFO L231 Difference]: Finished difference. Result has 146 places, 126 transitions, 1307 flow [2024-11-07 11:23:09,129 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1239, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1307, PETRI_PLACES=146, PETRI_TRANSITIONS=126} [2024-11-07 11:23:09,129 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 124 predicate places. [2024-11-07 11:23:09,129 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 126 transitions, 1307 flow [2024-11-07 11:23:09,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.388888888888889) internal successors, (97), 18 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:09,129 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:09,129 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:23:09,142 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 11:23:09,330 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,SelfDestructingSolverStorable27 [2024-11-07 11:23:09,330 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 11:23:09,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:09,331 INFO L85 PathProgramCache]: Analyzing trace with hash 291613362, now seen corresponding path program 20 times [2024-11-07 11:23:09,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:09,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758692878] [2024-11-07 11:23:09,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:09,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:09,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:09,711 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:09,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:09,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758692878] [2024-11-07 11:23:09,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758692878] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:23:09,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399042322] [2024-11-07 11:23:09,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:23:09,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:09,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:23:09,714 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 11:23:09,715 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 11:23:09,849 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:23:09,849 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:23:09,850 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-07 11:23:09,852 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:23:09,992 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:09,993 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:23:10,095 INFO L349 Elim1Store]: treesize reduction 11, result has 85.7 percent of original size [2024-11-07 11:23:10,095 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 71 treesize of output 88 [2024-11-07 11:23:10,168 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:10,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399042322] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:23:10,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:23:10,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 20 [2024-11-07 11:23:10,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603439182] [2024-11-07 11:23:10,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:23:10,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-07 11:23:10,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:10,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-07 11:23:10,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2024-11-07 11:23:10,170 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:23:10,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 126 transitions, 1307 flow. Second operand has 20 states, 20 states have (on average 5.2) internal successors, (104), 20 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:10,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:10,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:23:10,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:10,562 INFO L124 PetriNetUnfolderBase]: 361/690 cut-off events. [2024-11-07 11:23:10,563 INFO L125 PetriNetUnfolderBase]: For 5907/5907 co-relation queries the response was YES. [2024-11-07 11:23:10,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4292 conditions, 690 events. 361/690 cut-off events. For 5907/5907 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3212 event pairs, 135 based on Foata normal form. 3/693 useless extension candidates. Maximal degree in co-relation 4198. Up to 594 conditions per place. [2024-11-07 11:23:10,569 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 107 selfloop transitions, 24 changer transitions 6/138 dead transitions. [2024-11-07 11:23:10,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 138 transitions, 1656 flow [2024-11-07 11:23:10,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 11:23:10,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-07 11:23:10,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 72 transitions. [2024-11-07 11:23:10,570 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32727272727272727 [2024-11-07 11:23:10,570 INFO L175 Difference]: Start difference. First operand has 146 places, 126 transitions, 1307 flow. Second operand 10 states and 72 transitions. [2024-11-07 11:23:10,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 138 transitions, 1656 flow [2024-11-07 11:23:10,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 138 transitions, 1603 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-11-07 11:23:10,587 INFO L231 Difference]: Finished difference. Result has 148 places, 123 transitions, 1275 flow [2024-11-07 11:23:10,587 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1244, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1275, PETRI_PLACES=148, PETRI_TRANSITIONS=123} [2024-11-07 11:23:10,587 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 126 predicate places. [2024-11-07 11:23:10,588 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 123 transitions, 1275 flow [2024-11-07 11:23:10,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.2) internal successors, (104), 20 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:10,588 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:10,588 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:23:10,604 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 11:23:10,792 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,SelfDestructingSolverStorable28 [2024-11-07 11:23:10,793 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 11:23:10,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:10,793 INFO L85 PathProgramCache]: Analyzing trace with hash 564678892, now seen corresponding path program 21 times [2024-11-07 11:23:10,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:10,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601752482] [2024-11-07 11:23:10,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:10,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:10,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:11,269 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:11,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:11,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601752482] [2024-11-07 11:23:11,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601752482] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:23:11,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485802798] [2024-11-07 11:23:11,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:23:11,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:11,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:23:11,272 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 11:23:11,273 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 11:23:11,398 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-07 11:23:11,398 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:23:11,401 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-07 11:23:11,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:23:11,546 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:23:11,547 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 46 treesize of output 30 [2024-11-07 11:23:11,590 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:11,591 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:23:11,691 INFO L349 Elim1Store]: treesize reduction 11, result has 85.7 percent of original size [2024-11-07 11:23:11,691 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 44 treesize of output 77 [2024-11-07 11:23:11,747 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:11,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485802798] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:23:11,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:23:11,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 19 [2024-11-07 11:23:11,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180054673] [2024-11-07 11:23:11,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:23:11,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-07 11:23:11,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:11,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-07 11:23:11,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2024-11-07 11:23:11,749 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:23:11,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 123 transitions, 1275 flow. Second operand has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:11,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:11,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:23:11,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:12,189 INFO L124 PetriNetUnfolderBase]: 362/680 cut-off events. [2024-11-07 11:23:12,189 INFO L125 PetriNetUnfolderBase]: For 5920/5920 co-relation queries the response was YES. [2024-11-07 11:23:12,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4250 conditions, 680 events. 362/680 cut-off events. For 5920/5920 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3067 event pairs, 123 based on Foata normal form. 8/688 useless extension candidates. Maximal degree in co-relation 4156. Up to 547 conditions per place. [2024-11-07 11:23:12,198 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 114 selfloop transitions, 31 changer transitions 0/146 dead transitions. [2024-11-07 11:23:12,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 146 transitions, 1754 flow [2024-11-07 11:23:12,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 11:23:12,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-07 11:23:12,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 91 transitions. [2024-11-07 11:23:12,203 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3446969696969697 [2024-11-07 11:23:12,203 INFO L175 Difference]: Start difference. First operand has 148 places, 123 transitions, 1275 flow. Second operand 12 states and 91 transitions. [2024-11-07 11:23:12,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 146 transitions, 1754 flow [2024-11-07 11:23:12,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 146 transitions, 1694 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-11-07 11:23:12,218 INFO L231 Difference]: Finished difference. Result has 147 places, 124 transitions, 1306 flow [2024-11-07 11:23:12,218 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1208, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1306, PETRI_PLACES=147, PETRI_TRANSITIONS=124} [2024-11-07 11:23:12,218 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 125 predicate places. [2024-11-07 11:23:12,219 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 124 transitions, 1306 flow [2024-11-07 11:23:12,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:12,219 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:12,219 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:23:12,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-07 11:23:12,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:12,423 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 11:23:12,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:12,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1273444201, now seen corresponding path program 22 times [2024-11-07 11:23:12,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:12,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227503855] [2024-11-07 11:23:12,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:12,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:12,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:12,862 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:12,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:12,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227503855] [2024-11-07 11:23:12,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227503855] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:23:12,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276780708] [2024-11-07 11:23:12,863 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 11:23:12,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:12,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:23:12,865 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 11:23:12,866 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 11:23:12,994 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 11:23:12,994 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:23:12,998 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-07 11:23:12,999 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:23:13,047 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:23:13,048 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 65 treesize of output 45 [2024-11-07 11:23:13,087 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:13,087 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:23:13,235 INFO L349 Elim1Store]: treesize reduction 11, result has 85.7 percent of original size [2024-11-07 11:23:13,235 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 71 treesize of output 88 [2024-11-07 11:23:13,291 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:13,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276780708] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:23:13,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:23:13,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 19 [2024-11-07 11:23:13,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640380744] [2024-11-07 11:23:13,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:23:13,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-07 11:23:13,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:13,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-07 11:23:13,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2024-11-07 11:23:13,293 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:23:13,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 124 transitions, 1306 flow. Second operand has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:13,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:13,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:23:13,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:13,612 INFO L124 PetriNetUnfolderBase]: 360/678 cut-off events. [2024-11-07 11:23:13,612 INFO L125 PetriNetUnfolderBase]: For 6019/6019 co-relation queries the response was YES. [2024-11-07 11:23:13,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4254 conditions, 678 events. 360/678 cut-off events. For 6019/6019 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3072 event pairs, 128 based on Foata normal form. 2/680 useless extension candidates. Maximal degree in co-relation 4160. Up to 550 conditions per place. [2024-11-07 11:23:13,617 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 108 selfloop transitions, 28 changer transitions 2/139 dead transitions. [2024-11-07 11:23:13,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 139 transitions, 1689 flow [2024-11-07 11:23:13,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 11:23:13,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-07 11:23:13,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 75 transitions. [2024-11-07 11:23:13,617 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-11-07 11:23:13,617 INFO L175 Difference]: Start difference. First operand has 147 places, 124 transitions, 1306 flow. Second operand 10 states and 75 transitions. [2024-11-07 11:23:13,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 139 transitions, 1689 flow [2024-11-07 11:23:13,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 139 transitions, 1620 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-11-07 11:23:13,650 INFO L231 Difference]: Finished difference. Result has 147 places, 122 transitions, 1273 flow [2024-11-07 11:23:13,650 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1225, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1273, PETRI_PLACES=147, PETRI_TRANSITIONS=122} [2024-11-07 11:23:13,650 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 125 predicate places. [2024-11-07 11:23:13,650 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 122 transitions, 1273 flow [2024-11-07 11:23:13,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:13,650 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:13,651 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:23:13,664 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 11:23:13,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,27 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:13,854 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 11:23:13,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:13,855 INFO L85 PathProgramCache]: Analyzing trace with hash -696176334, now seen corresponding path program 23 times [2024-11-07 11:23:13,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:13,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949527331] [2024-11-07 11:23:13,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:13,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:14,189 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:14,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:14,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949527331] [2024-11-07 11:23:14,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949527331] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:23:14,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209868966] [2024-11-07 11:23:14,189 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 11:23:14,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:14,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:23:14,191 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 11:23:14,192 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 11:23:14,430 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-07 11:23:14,430 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:23:14,436 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-07 11:23:14,437 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:23:14,546 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:14,546 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:23:14,669 INFO L349 Elim1Store]: treesize reduction 11, result has 85.7 percent of original size [2024-11-07 11:23:14,669 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 44 treesize of output 77 [2024-11-07 11:23:14,719 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:14,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209868966] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:23:14,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:23:14,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 21 [2024-11-07 11:23:14,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128378234] [2024-11-07 11:23:14,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:23:14,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-07 11:23:14,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:14,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-07 11:23:14,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2024-11-07 11:23:14,722 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:23:14,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 122 transitions, 1273 flow. Second operand has 21 states, 21 states have (on average 5.333333333333333) internal successors, (112), 21 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:14,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:14,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:23:14,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:14,999 INFO L124 PetriNetUnfolderBase]: 360/671 cut-off events. [2024-11-07 11:23:14,999 INFO L125 PetriNetUnfolderBase]: For 5879/5879 co-relation queries the response was YES. [2024-11-07 11:23:15,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4216 conditions, 671 events. 360/671 cut-off events. For 5879/5879 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3010 event pairs, 126 based on Foata normal form. 4/675 useless extension candidates. Maximal degree in co-relation 4122. Up to 569 conditions per place. [2024-11-07 11:23:15,005 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 111 selfloop transitions, 24 changer transitions 0/136 dead transitions. [2024-11-07 11:23:15,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 136 transitions, 1674 flow [2024-11-07 11:23:15,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 11:23:15,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 11:23:15,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 68 transitions. [2024-11-07 11:23:15,006 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3434343434343434 [2024-11-07 11:23:15,006 INFO L175 Difference]: Start difference. First operand has 147 places, 122 transitions, 1273 flow. Second operand 9 states and 68 transitions. [2024-11-07 11:23:15,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 136 transitions, 1674 flow [2024-11-07 11:23:15,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 136 transitions, 1603 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-11-07 11:23:15,040 INFO L231 Difference]: Finished difference. Result has 142 places, 122 transitions, 1260 flow [2024-11-07 11:23:15,040 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1193, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1260, PETRI_PLACES=142, PETRI_TRANSITIONS=122} [2024-11-07 11:23:15,041 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 120 predicate places. [2024-11-07 11:23:15,041 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 122 transitions, 1260 flow [2024-11-07 11:23:15,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.333333333333333) internal successors, (112), 21 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:15,041 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:15,041 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:23:15,055 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 11:23:15,242 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,SelfDestructingSolverStorable31 [2024-11-07 11:23:15,242 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 11:23:15,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:15,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1676819895, now seen corresponding path program 24 times [2024-11-07 11:23:15,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:15,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080970019] [2024-11-07 11:23:15,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:15,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:15,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:15,587 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:15,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:15,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080970019] [2024-11-07 11:23:15,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080970019] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:23:15,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838788390] [2024-11-07 11:23:15,588 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-07 11:23:15,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:15,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:23:15,590 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 11:23:15,592 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 11:23:15,724 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-07 11:23:15,725 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:23:15,726 INFO L255 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-07 11:23:15,727 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:23:15,882 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:15,883 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:23:15,999 INFO L349 Elim1Store]: treesize reduction 11, result has 85.7 percent of original size [2024-11-07 11:23:15,999 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 71 treesize of output 88 [2024-11-07 11:23:16,064 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:16,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838788390] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:23:16,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:23:16,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 20 [2024-11-07 11:23:16,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514834918] [2024-11-07 11:23:16,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:23:16,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-07 11:23:16,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:16,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-07 11:23:16,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-11-07 11:23:16,066 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:23:16,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 122 transitions, 1260 flow. Second operand has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:16,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:16,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:23:16,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:16,403 INFO L124 PetriNetUnfolderBase]: 354/649 cut-off events. [2024-11-07 11:23:16,403 INFO L125 PetriNetUnfolderBase]: For 5623/5623 co-relation queries the response was YES. [2024-11-07 11:23:16,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4092 conditions, 649 events. 354/649 cut-off events. For 5623/5623 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2845 event pairs, 122 based on Foata normal form. 2/651 useless extension candidates. Maximal degree in co-relation 3999. Up to 547 conditions per place. [2024-11-07 11:23:16,407 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 105 selfloop transitions, 25 changer transitions 4/135 dead transitions. [2024-11-07 11:23:16,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 135 transitions, 1624 flow [2024-11-07 11:23:16,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 11:23:16,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-07 11:23:16,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 71 transitions. [2024-11-07 11:23:16,408 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32272727272727275 [2024-11-07 11:23:16,408 INFO L175 Difference]: Start difference. First operand has 142 places, 122 transitions, 1260 flow. Second operand 10 states and 71 transitions. [2024-11-07 11:23:16,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 135 transitions, 1624 flow [2024-11-07 11:23:16,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 135 transitions, 1576 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-11-07 11:23:16,420 INFO L231 Difference]: Finished difference. Result has 144 places, 119 transitions, 1236 flow [2024-11-07 11:23:16,421 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1202, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1236, PETRI_PLACES=144, PETRI_TRANSITIONS=119} [2024-11-07 11:23:16,421 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 122 predicate places. [2024-11-07 11:23:16,421 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 119 transitions, 1236 flow [2024-11-07 11:23:16,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:16,421 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:16,421 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:23:16,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-07 11:23:16,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:16,625 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 11:23:16,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:16,626 INFO L85 PathProgramCache]: Analyzing trace with hash -618554944, now seen corresponding path program 25 times [2024-11-07 11:23:16,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:16,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131815950] [2024-11-07 11:23:16,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:16,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:16,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:16,965 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:16,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:16,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131815950] [2024-11-07 11:23:16,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131815950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:23:16,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442331576] [2024-11-07 11:23:16,965 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-07 11:23:16,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:16,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:23:16,967 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 11:23:16,968 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 11:23:17,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:17,122 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-07 11:23:17,122 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:23:17,179 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-07 11:23:17,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 9 [2024-11-07 11:23:17,181 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:17,181 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:23:17,275 INFO L349 Elim1Store]: treesize reduction 11, result has 85.7 percent of original size [2024-11-07 11:23:17,276 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 44 treesize of output 77 [2024-11-07 11:23:17,314 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:17,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442331576] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:23:17,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:23:17,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 18 [2024-11-07 11:23:17,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506789225] [2024-11-07 11:23:17,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:23:17,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-07 11:23:17,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:17,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-07 11:23:17,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-11-07 11:23:17,315 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:23:17,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 119 transitions, 1236 flow. Second operand has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:17,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:17,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:23:17,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:17,585 INFO L124 PetriNetUnfolderBase]: 364/663 cut-off events. [2024-11-07 11:23:17,585 INFO L125 PetriNetUnfolderBase]: For 6041/6041 co-relation queries the response was YES. [2024-11-07 11:23:17,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4234 conditions, 663 events. 364/663 cut-off events. For 6041/6041 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2896 event pairs, 119 based on Foata normal form. 4/667 useless extension candidates. Maximal degree in co-relation 4141. Up to 552 conditions per place. [2024-11-07 11:23:17,590 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 111 selfloop transitions, 23 changer transitions 0/135 dead transitions. [2024-11-07 11:23:17,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 135 transitions, 1690 flow [2024-11-07 11:23:17,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 11:23:17,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 11:23:17,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 67 transitions. [2024-11-07 11:23:17,591 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3383838383838384 [2024-11-07 11:23:17,591 INFO L175 Difference]: Start difference. First operand has 144 places, 119 transitions, 1236 flow. Second operand 9 states and 67 transitions. [2024-11-07 11:23:17,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 135 transitions, 1690 flow [2024-11-07 11:23:17,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 135 transitions, 1638 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-07 11:23:17,605 INFO L231 Difference]: Finished difference. Result has 143 places, 121 transitions, 1280 flow [2024-11-07 11:23:17,605 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1186, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1280, PETRI_PLACES=143, PETRI_TRANSITIONS=121} [2024-11-07 11:23:17,605 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 121 predicate places. [2024-11-07 11:23:17,605 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 121 transitions, 1280 flow [2024-11-07 11:23:17,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:17,605 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:17,606 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:23:17,619 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 11:23:17,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,30 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:17,807 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 11:23:17,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:17,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1110492390, now seen corresponding path program 26 times [2024-11-07 11:23:17,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:17,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973202202] [2024-11-07 11:23:17,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:17,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:17,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:18,140 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:18,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:18,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973202202] [2024-11-07 11:23:18,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973202202] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:23:18,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353621272] [2024-11-07 11:23:18,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:23:18,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:18,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:23:18,143 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 11:23:18,156 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 11:23:18,305 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:23:18,305 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:23:18,310 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-07 11:23:18,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:23:18,408 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:23:18,408 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 65 treesize of output 41 [2024-11-07 11:23:18,438 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:18,438 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:23:18,553 INFO L349 Elim1Store]: treesize reduction 11, result has 85.7 percent of original size [2024-11-07 11:23:18,553 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 44 treesize of output 77 [2024-11-07 11:23:18,610 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:18,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353621272] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:23:18,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:23:18,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 20 [2024-11-07 11:23:18,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373538135] [2024-11-07 11:23:18,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:23:18,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-07 11:23:18,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:18,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-07 11:23:18,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2024-11-07 11:23:18,612 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:23:18,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 121 transitions, 1280 flow. Second operand has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:18,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:18,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:23:18,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:18,944 INFO L124 PetriNetUnfolderBase]: 376/683 cut-off events. [2024-11-07 11:23:18,944 INFO L125 PetriNetUnfolderBase]: For 6773/6773 co-relation queries the response was YES. [2024-11-07 11:23:18,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4457 conditions, 683 events. 376/683 cut-off events. For 6773/6773 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3000 event pairs, 120 based on Foata normal form. 4/687 useless extension candidates. Maximal degree in co-relation 4362. Up to 552 conditions per place. [2024-11-07 11:23:18,949 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 112 selfloop transitions, 28 changer transitions 0/141 dead transitions. [2024-11-07 11:23:18,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 141 transitions, 1789 flow [2024-11-07 11:23:18,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 11:23:18,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 11:23:18,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 80 transitions. [2024-11-07 11:23:18,953 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3305785123966942 [2024-11-07 11:23:18,953 INFO L175 Difference]: Start difference. First operand has 143 places, 121 transitions, 1280 flow. Second operand 11 states and 80 transitions. [2024-11-07 11:23:18,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 141 transitions, 1789 flow [2024-11-07 11:23:18,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 141 transitions, 1718 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-11-07 11:23:18,984 INFO L231 Difference]: Finished difference. Result has 149 places, 124 transitions, 1345 flow [2024-11-07 11:23:18,984 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1224, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1345, PETRI_PLACES=149, PETRI_TRANSITIONS=124} [2024-11-07 11:23:18,984 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 127 predicate places. [2024-11-07 11:23:18,984 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 124 transitions, 1345 flow [2024-11-07 11:23:18,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:18,985 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:18,985 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:23:19,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-07 11:23:19,188 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,SelfDestructingSolverStorable34 [2024-11-07 11:23:19,189 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 11:23:19,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:19,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1123615104, now seen corresponding path program 27 times [2024-11-07 11:23:19,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:19,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204432318] [2024-11-07 11:23:19,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:19,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:19,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:19,611 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:19,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:19,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204432318] [2024-11-07 11:23:19,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204432318] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:23:19,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134580540] [2024-11-07 11:23:19,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:23:19,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:19,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:23:19,613 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 11:23:19,614 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 11:23:19,782 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-07 11:23:19,782 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:23:19,784 INFO L255 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-07 11:23:19,784 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:23:19,882 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:23:19,883 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 65 treesize of output 41 [2024-11-07 11:23:19,914 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:19,915 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:23:20,027 INFO L349 Elim1Store]: treesize reduction 11, result has 85.7 percent of original size [2024-11-07 11:23:20,028 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 71 treesize of output 88 [2024-11-07 11:23:20,088 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:20,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134580540] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:23:20,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:23:20,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 20 [2024-11-07 11:23:20,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494163084] [2024-11-07 11:23:20,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:23:20,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-07 11:23:20,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:20,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-07 11:23:20,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2024-11-07 11:23:20,091 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:23:20,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 124 transitions, 1345 flow. Second operand has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:20,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:20,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:23:20,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:20,630 INFO L124 PetriNetUnfolderBase]: 386/706 cut-off events. [2024-11-07 11:23:20,630 INFO L125 PetriNetUnfolderBase]: For 7300/7300 co-relation queries the response was YES. [2024-11-07 11:23:20,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4650 conditions, 706 events. 386/706 cut-off events. For 7300/7300 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3188 event pairs, 123 based on Foata normal form. 4/710 useless extension candidates. Maximal degree in co-relation 4553. Up to 551 conditions per place. [2024-11-07 11:23:20,636 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 118 selfloop transitions, 30 changer transitions 3/152 dead transitions. [2024-11-07 11:23:20,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 152 transitions, 1903 flow [2024-11-07 11:23:20,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 11:23:20,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-07 11:23:20,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 94 transitions. [2024-11-07 11:23:20,637 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3560606060606061 [2024-11-07 11:23:20,637 INFO L175 Difference]: Start difference. First operand has 149 places, 124 transitions, 1345 flow. Second operand 12 states and 94 transitions. [2024-11-07 11:23:20,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 152 transitions, 1903 flow [2024-11-07 11:23:20,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 152 transitions, 1830 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-11-07 11:23:20,654 INFO L231 Difference]: Finished difference. Result has 154 places, 127 transitions, 1407 flow [2024-11-07 11:23:20,654 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1274, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1407, PETRI_PLACES=154, PETRI_TRANSITIONS=127} [2024-11-07 11:23:20,654 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 132 predicate places. [2024-11-07 11:23:20,654 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 127 transitions, 1407 flow [2024-11-07 11:23:20,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:20,655 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:20,655 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:23:20,668 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-07 11:23:20,855 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,SelfDestructingSolverStorable35 [2024-11-07 11:23:20,856 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 11:23:20,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:20,856 INFO L85 PathProgramCache]: Analyzing trace with hash -580702024, now seen corresponding path program 28 times [2024-11-07 11:23:20,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:20,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271252464] [2024-11-07 11:23:20,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:20,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:21,158 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:21,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:21,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271252464] [2024-11-07 11:23:21,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271252464] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:23:21,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387698566] [2024-11-07 11:23:21,159 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 11:23:21,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:21,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:23:21,161 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 11:23:21,162 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 11:23:21,308 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 11:23:21,308 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:23:21,313 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-07 11:23:21,314 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:23:21,370 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:21,370 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:23:21,468 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-07 11:23:21,468 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 32 treesize of output 48 [2024-11-07 11:23:21,475 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:21,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387698566] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:23:21,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:23:21,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 18 [2024-11-07 11:23:21,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222752598] [2024-11-07 11:23:21,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:23:21,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-07 11:23:21,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:21,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-07 11:23:21,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2024-11-07 11:23:21,477 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:23:21,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 127 transitions, 1407 flow. Second operand has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:21,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:21,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:23:21,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:21,762 INFO L124 PetriNetUnfolderBase]: 398/726 cut-off events. [2024-11-07 11:23:21,762 INFO L125 PetriNetUnfolderBase]: For 7958/7958 co-relation queries the response was YES. [2024-11-07 11:23:21,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4850 conditions, 726 events. 398/726 cut-off events. For 7958/7958 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3299 event pairs, 26 based on Foata normal form. 4/730 useless extension candidates. Maximal degree in co-relation 4751. Up to 339 conditions per place. [2024-11-07 11:23:21,767 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 104 selfloop transitions, 46 changer transitions 1/152 dead transitions. [2024-11-07 11:23:21,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 152 transitions, 2010 flow [2024-11-07 11:23:21,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 11:23:21,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-07 11:23:21,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 78 transitions. [2024-11-07 11:23:21,768 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35454545454545455 [2024-11-07 11:23:21,768 INFO L175 Difference]: Start difference. First operand has 154 places, 127 transitions, 1407 flow. Second operand 10 states and 78 transitions. [2024-11-07 11:23:21,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 152 transitions, 2010 flow [2024-11-07 11:23:21,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 152 transitions, 1911 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-11-07 11:23:21,788 INFO L231 Difference]: Finished difference. Result has 156 places, 129 transitions, 1456 flow [2024-11-07 11:23:21,788 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1308, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1456, PETRI_PLACES=156, PETRI_TRANSITIONS=129} [2024-11-07 11:23:21,788 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 134 predicate places. [2024-11-07 11:23:21,788 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 129 transitions, 1456 flow [2024-11-07 11:23:21,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:21,788 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:21,789 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:23:21,802 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 11:23:21,992 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,SelfDestructingSolverStorable36 [2024-11-07 11:23:21,993 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 11:23:21,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:21,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1092855677, now seen corresponding path program 29 times [2024-11-07 11:23:21,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:21,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291460289] [2024-11-07 11:23:21,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:21,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:22,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:22,414 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:22,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:22,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291460289] [2024-11-07 11:23:22,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291460289] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:23:22,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143640547] [2024-11-07 11:23:22,414 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 11:23:22,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:22,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:23:22,419 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 11:23:22,422 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 11:23:22,621 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-07 11:23:22,621 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:23:22,625 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-07 11:23:22,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:23:22,716 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:22,716 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:23:22,804 INFO L349 Elim1Store]: treesize reduction 11, result has 85.7 percent of original size [2024-11-07 11:23:22,805 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 71 treesize of output 88 [2024-11-07 11:23:22,847 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:22,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143640547] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:23:22,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:23:22,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 21 [2024-11-07 11:23:22,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291353287] [2024-11-07 11:23:22,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:23:22,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-07 11:23:22,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:22,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-07 11:23:22,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2024-11-07 11:23:22,849 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:23:22,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 129 transitions, 1456 flow. Second operand has 21 states, 21 states have (on average 5.238095238095238) internal successors, (110), 21 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:22,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:22,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:23:22,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:23,172 INFO L124 PetriNetUnfolderBase]: 396/724 cut-off events. [2024-11-07 11:23:23,173 INFO L125 PetriNetUnfolderBase]: For 8024/8024 co-relation queries the response was YES. [2024-11-07 11:23:23,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4895 conditions, 724 events. 396/724 cut-off events. For 8024/8024 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3277 event pairs, 146 based on Foata normal form. 2/726 useless extension candidates. Maximal degree in co-relation 4793. Up to 627 conditions per place. [2024-11-07 11:23:23,179 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 112 selfloop transitions, 22 changer transitions 4/139 dead transitions. [2024-11-07 11:23:23,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 139 transitions, 1819 flow [2024-11-07 11:23:23,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 11:23:23,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 11:23:23,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 62 transitions. [2024-11-07 11:23:23,180 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31313131313131315 [2024-11-07 11:23:23,180 INFO L175 Difference]: Start difference. First operand has 156 places, 129 transitions, 1456 flow. Second operand 9 states and 62 transitions. [2024-11-07 11:23:23,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 139 transitions, 1819 flow [2024-11-07 11:23:23,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 139 transitions, 1735 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-11-07 11:23:23,202 INFO L231 Difference]: Finished difference. Result has 160 places, 129 transitions, 1423 flow [2024-11-07 11:23:23,202 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1372, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1423, PETRI_PLACES=160, PETRI_TRANSITIONS=129} [2024-11-07 11:23:23,203 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 138 predicate places. [2024-11-07 11:23:23,203 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 129 transitions, 1423 flow [2024-11-07 11:23:23,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.238095238095238) internal successors, (110), 21 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:23,203 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:23,203 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:23:23,217 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 11:23:23,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,34 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:23,405 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 11:23:23,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:23,406 INFO L85 PathProgramCache]: Analyzing trace with hash 700780506, now seen corresponding path program 30 times [2024-11-07 11:23:23,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:23,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456821944] [2024-11-07 11:23:23,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:23,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:23,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:23,811 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:23,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:23,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456821944] [2024-11-07 11:23:23,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456821944] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:23:23,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264945103] [2024-11-07 11:23:23,811 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-07 11:23:23,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:23,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:23:23,818 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 11:23:23,823 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 11:23:23,981 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-07 11:23:23,982 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:23:23,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-07 11:23:23,984 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:23:24,108 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:23:24,108 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 65 treesize of output 41 [2024-11-07 11:23:24,176 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:24,176 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:23:24,299 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-07 11:23:24,299 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 32 treesize of output 48 [2024-11-07 11:23:24,332 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:24,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264945103] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:23:24,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:23:24,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 20 [2024-11-07 11:23:24,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272882730] [2024-11-07 11:23:24,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:23:24,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-07 11:23:24,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:24,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-07 11:23:24,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2024-11-07 11:23:24,333 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:23:24,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 129 transitions, 1423 flow. Second operand has 20 states, 20 states have (on average 5.15) internal successors, (103), 20 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:24,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:24,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:23:24,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:24,794 INFO L124 PetriNetUnfolderBase]: 388/712 cut-off events. [2024-11-07 11:23:24,794 INFO L125 PetriNetUnfolderBase]: For 7323/7323 co-relation queries the response was YES. [2024-11-07 11:23:24,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4771 conditions, 712 events. 388/712 cut-off events. For 7323/7323 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3210 event pairs, 19 based on Foata normal form. 6/718 useless extension candidates. Maximal degree in co-relation 4703. Up to 292 conditions per place. [2024-11-07 11:23:24,800 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 105 selfloop transitions, 59 changer transitions 6/171 dead transitions. [2024-11-07 11:23:24,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 171 transitions, 2136 flow [2024-11-07 11:23:24,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-07 11:23:24,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-07 11:23:24,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 136 transitions. [2024-11-07 11:23:24,802 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3434343434343434 [2024-11-07 11:23:24,802 INFO L175 Difference]: Start difference. First operand has 160 places, 129 transitions, 1423 flow. Second operand 18 states and 136 transitions. [2024-11-07 11:23:24,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 171 transitions, 2136 flow [2024-11-07 11:23:24,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 171 transitions, 2084 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-11-07 11:23:24,822 INFO L231 Difference]: Finished difference. Result has 170 places, 130 transitions, 1531 flow [2024-11-07 11:23:24,822 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1371, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1531, PETRI_PLACES=170, PETRI_TRANSITIONS=130} [2024-11-07 11:23:24,823 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 148 predicate places. [2024-11-07 11:23:24,823 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 130 transitions, 1531 flow [2024-11-07 11:23:24,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.15) internal successors, (103), 20 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:24,823 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:24,823 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:23:24,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-11-07 11:23:25,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-07 11:23:25,028 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 11:23:25,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:25,028 INFO L85 PathProgramCache]: Analyzing trace with hash 679894773, now seen corresponding path program 31 times [2024-11-07 11:23:25,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:25,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574664511] [2024-11-07 11:23:25,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:25,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:25,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:25,439 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:25,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:25,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574664511] [2024-11-07 11:23:25,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574664511] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:23:25,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550421228] [2024-11-07 11:23:25,440 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-07 11:23:25,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:25,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:23:25,445 INFO L229 MonitoredProcess]: Starting monitored process 36 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 11:23:25,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-07 11:23:25,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:25,606 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-07 11:23:25,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:23:25,671 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:23:25,672 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 65 treesize of output 45 [2024-11-07 11:23:25,705 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:25,705 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:23:25,830 INFO L349 Elim1Store]: treesize reduction 24, result has 65.2 percent of original size [2024-11-07 11:23:25,830 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 63 treesize of output 67 [2024-11-07 11:23:25,849 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:25,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550421228] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:23:25,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:23:25,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 19 [2024-11-07 11:23:25,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505824684] [2024-11-07 11:23:25,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:23:25,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-07 11:23:25,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:25,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-07 11:23:25,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-07 11:23:25,850 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:23:25,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 130 transitions, 1531 flow. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:25,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:25,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:23:25,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:26,298 INFO L124 PetriNetUnfolderBase]: 389/714 cut-off events. [2024-11-07 11:23:26,299 INFO L125 PetriNetUnfolderBase]: For 8251/8251 co-relation queries the response was YES. [2024-11-07 11:23:26,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4922 conditions, 714 events. 389/714 cut-off events. For 8251/8251 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3205 event pairs, 84 based on Foata normal form. 5/719 useless extension candidates. Maximal degree in co-relation 4817. Up to 396 conditions per place. [2024-11-07 11:23:26,304 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 99 selfloop transitions, 49 changer transitions 0/149 dead transitions. [2024-11-07 11:23:26,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 149 transitions, 1973 flow [2024-11-07 11:23:26,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 11:23:26,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 11:23:26,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 76 transitions. [2024-11-07 11:23:26,305 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-11-07 11:23:26,305 INFO L175 Difference]: Start difference. First operand has 170 places, 130 transitions, 1531 flow. Second operand 9 states and 76 transitions. [2024-11-07 11:23:26,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 149 transitions, 1973 flow [2024-11-07 11:23:26,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 149 transitions, 1786 flow, removed 36 selfloop flow, removed 19 redundant places. [2024-11-07 11:23:26,327 INFO L231 Difference]: Finished difference. Result has 159 places, 131 transitions, 1478 flow [2024-11-07 11:23:26,328 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1349, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1478, PETRI_PLACES=159, PETRI_TRANSITIONS=131} [2024-11-07 11:23:26,328 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 137 predicate places. [2024-11-07 11:23:26,328 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 131 transitions, 1478 flow [2024-11-07 11:23:26,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:26,328 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:26,328 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:23:26,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-11-07 11:23:26,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-07 11:23:26,529 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 11:23:26,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:26,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1468901763, now seen corresponding path program 32 times [2024-11-07 11:23:26,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:26,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518568025] [2024-11-07 11:23:26,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:26,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:26,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:26,868 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:26,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:26,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518568025] [2024-11-07 11:23:26,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518568025] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:23:26,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307170145] [2024-11-07 11:23:26,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:23:26,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:26,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:23:26,871 INFO L229 MonitoredProcess]: Starting monitored process 37 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 11:23:26,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-07 11:23:27,041 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:23:27,041 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:23:27,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-07 11:23:27,044 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:23:27,140 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:23:27,140 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 65 treesize of output 41 [2024-11-07 11:23:27,168 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:27,168 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:23:27,274 INFO L349 Elim1Store]: treesize reduction 11, result has 85.7 percent of original size [2024-11-07 11:23:27,275 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 71 treesize of output 88 [2024-11-07 11:23:27,330 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:27,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307170145] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:23:27,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:23:27,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 20 [2024-11-07 11:23:27,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199454638] [2024-11-07 11:23:27,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:23:27,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-07 11:23:27,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:27,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-07 11:23:27,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2024-11-07 11:23:27,332 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:23:27,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 131 transitions, 1478 flow. Second operand has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:27,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:27,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:23:27,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:27,650 INFO L124 PetriNetUnfolderBase]: 396/726 cut-off events. [2024-11-07 11:23:27,650 INFO L125 PetriNetUnfolderBase]: For 8358/8358 co-relation queries the response was YES. [2024-11-07 11:23:27,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4886 conditions, 726 events. 396/726 cut-off events. For 8358/8358 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3278 event pairs, 138 based on Foata normal form. 5/731 useless extension candidates. Maximal degree in co-relation 4787. Up to 622 conditions per place. [2024-11-07 11:23:27,655 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 117 selfloop transitions, 25 changer transitions 0/143 dead transitions. [2024-11-07 11:23:27,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 143 transitions, 1858 flow [2024-11-07 11:23:27,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 11:23:27,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 11:23:27,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 66 transitions. [2024-11-07 11:23:27,656 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-11-07 11:23:27,656 INFO L175 Difference]: Start difference. First operand has 159 places, 131 transitions, 1478 flow. Second operand 9 states and 66 transitions. [2024-11-07 11:23:27,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 143 transitions, 1858 flow [2024-11-07 11:23:27,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 143 transitions, 1780 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-11-07 11:23:27,674 INFO L231 Difference]: Finished difference. Result has 162 places, 132 transitions, 1484 flow [2024-11-07 11:23:27,675 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1401, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1484, PETRI_PLACES=162, PETRI_TRANSITIONS=132} [2024-11-07 11:23:27,675 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 140 predicate places. [2024-11-07 11:23:27,675 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 132 transitions, 1484 flow [2024-11-07 11:23:27,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:27,676 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:27,676 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:23:27,689 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-07 11:23:27,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,37 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:27,876 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 11:23:27,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:27,877 INFO L85 PathProgramCache]: Analyzing trace with hash -179574403, now seen corresponding path program 33 times [2024-11-07 11:23:27,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:27,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590190739] [2024-11-07 11:23:27,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:27,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:27,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:28,305 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:28,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:28,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590190739] [2024-11-07 11:23:28,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590190739] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:23:28,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023355698] [2024-11-07 11:23:28,306 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:23:28,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:28,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:23:28,308 INFO L229 MonitoredProcess]: Starting monitored process 38 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 11:23:28,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-07 11:23:28,464 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-07 11:23:28,464 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:23:28,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-07 11:23:28,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:23:28,596 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:23:28,596 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 65 treesize of output 41 [2024-11-07 11:23:28,629 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:28,629 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:23:28,748 INFO L349 Elim1Store]: treesize reduction 24, result has 65.2 percent of original size [2024-11-07 11:23:28,749 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 63 treesize of output 67 [2024-11-07 11:23:28,781 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:28,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023355698] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:23:28,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:23:28,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 20 [2024-11-07 11:23:28,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91928752] [2024-11-07 11:23:28,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:23:28,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-07 11:23:28,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:28,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-07 11:23:28,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2024-11-07 11:23:28,782 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:23:28,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 132 transitions, 1484 flow. Second operand has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:28,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:28,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:23:28,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:29,682 INFO L124 PetriNetUnfolderBase]: 395/727 cut-off events. [2024-11-07 11:23:29,682 INFO L125 PetriNetUnfolderBase]: For 7397/7397 co-relation queries the response was YES. [2024-11-07 11:23:29,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4815 conditions, 727 events. 395/727 cut-off events. For 7397/7397 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3321 event pairs, 80 based on Foata normal form. 2/729 useless extension candidates. Maximal degree in co-relation 4715. Up to 401 conditions per place. [2024-11-07 11:23:29,688 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 108 selfloop transitions, 54 changer transitions 2/165 dead transitions. [2024-11-07 11:23:29,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 165 transitions, 2026 flow [2024-11-07 11:23:29,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-07 11:23:29,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-07 11:23:29,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 113 transitions. [2024-11-07 11:23:29,689 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3424242424242424 [2024-11-07 11:23:29,689 INFO L175 Difference]: Start difference. First operand has 162 places, 132 transitions, 1484 flow. Second operand 15 states and 113 transitions. [2024-11-07 11:23:29,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 165 transitions, 2026 flow [2024-11-07 11:23:29,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 165 transitions, 1960 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-11-07 11:23:29,713 INFO L231 Difference]: Finished difference. Result has 169 places, 131 transitions, 1520 flow [2024-11-07 11:23:29,713 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1418, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1520, PETRI_PLACES=169, PETRI_TRANSITIONS=131} [2024-11-07 11:23:29,713 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 147 predicate places. [2024-11-07 11:23:29,713 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 131 transitions, 1520 flow [2024-11-07 11:23:29,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:29,714 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:29,714 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:23:29,728 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-07 11:23:29,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,38 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:29,914 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 11:23:29,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:29,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1053315083, now seen corresponding path program 34 times [2024-11-07 11:23:29,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:29,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070667445] [2024-11-07 11:23:29,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:29,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:29,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:30,269 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:30,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:30,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070667445] [2024-11-07 11:23:30,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070667445] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:23:30,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969184039] [2024-11-07 11:23:30,270 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 11:23:30,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:30,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:23:30,272 INFO L229 MonitoredProcess]: Starting monitored process 39 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 11:23:30,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-07 11:23:30,432 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 11:23:30,432 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:23:30,434 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-07 11:23:30,434 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:23:30,498 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:30,499 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:23:30,595 INFO L349 Elim1Store]: treesize reduction 24, result has 65.2 percent of original size [2024-11-07 11:23:30,595 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 63 treesize of output 67 [2024-11-07 11:23:30,609 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:30,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969184039] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:23:30,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:23:30,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 19 [2024-11-07 11:23:30,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999293249] [2024-11-07 11:23:30,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:23:30,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-07 11:23:30,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:30,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-07 11:23:30,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2024-11-07 11:23:30,610 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:23:30,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 131 transitions, 1520 flow. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:30,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:30,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:23:30,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:30,945 INFO L124 PetriNetUnfolderBase]: 394/728 cut-off events. [2024-11-07 11:23:30,946 INFO L125 PetriNetUnfolderBase]: For 7372/7372 co-relation queries the response was YES. [2024-11-07 11:23:30,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4903 conditions, 728 events. 394/728 cut-off events. For 7372/7372 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3347 event pairs, 81 based on Foata normal form. 2/730 useless extension candidates. Maximal degree in co-relation 4803. Up to 401 conditions per place. [2024-11-07 11:23:30,950 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 92 selfloop transitions, 48 changer transitions 4/145 dead transitions. [2024-11-07 11:23:30,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 145 transitions, 1901 flow [2024-11-07 11:23:30,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 11:23:30,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 11:23:30,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 68 transitions. [2024-11-07 11:23:30,951 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3434343434343434 [2024-11-07 11:23:30,951 INFO L175 Difference]: Start difference. First operand has 169 places, 131 transitions, 1520 flow. Second operand 9 states and 68 transitions. [2024-11-07 11:23:30,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 145 transitions, 1901 flow [2024-11-07 11:23:30,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 145 transitions, 1744 flow, removed 2 selfloop flow, removed 14 redundant places. [2024-11-07 11:23:30,969 INFO L231 Difference]: Finished difference. Result has 163 places, 130 transitions, 1459 flow [2024-11-07 11:23:30,969 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1365, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1459, PETRI_PLACES=163, PETRI_TRANSITIONS=130} [2024-11-07 11:23:30,970 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 141 predicate places. [2024-11-07 11:23:30,970 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 130 transitions, 1459 flow [2024-11-07 11:23:30,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:30,970 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:30,970 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:23:30,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-11-07 11:23:31,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-11-07 11:23:31,175 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 11:23:31,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:31,175 INFO L85 PathProgramCache]: Analyzing trace with hash 690841853, now seen corresponding path program 35 times [2024-11-07 11:23:31,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:31,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321022379] [2024-11-07 11:23:31,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:31,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:31,463 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:31,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:31,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321022379] [2024-11-07 11:23:31,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321022379] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:23:31,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626706581] [2024-11-07 11:23:31,464 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 11:23:31,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:31,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:23:31,467 INFO L229 MonitoredProcess]: Starting monitored process 40 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 11:23:31,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-07 11:23:31,668 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-07 11:23:31,669 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:23:31,671 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-07 11:23:31,672 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:23:31,863 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-07 11:23:31,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 9 [2024-11-07 11:23:31,877 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:31,878 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:23:32,112 INFO L349 Elim1Store]: treesize reduction 11, result has 85.7 percent of original size [2024-11-07 11:23:32,113 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 44 treesize of output 77 [2024-11-07 11:23:32,149 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:32,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626706581] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:23:32,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:23:32,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 25 [2024-11-07 11:23:32,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442950732] [2024-11-07 11:23:32,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:23:32,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-07 11:23:32,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:32,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-07 11:23:32,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2024-11-07 11:23:32,151 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:23:32,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 130 transitions, 1459 flow. Second operand has 25 states, 25 states have (on average 5.12) internal successors, (128), 25 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:32,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:32,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:23:32,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:32,666 INFO L124 PetriNetUnfolderBase]: 408/751 cut-off events. [2024-11-07 11:23:32,666 INFO L125 PetriNetUnfolderBase]: For 8837/8837 co-relation queries the response was YES. [2024-11-07 11:23:32,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5020 conditions, 751 events. 408/751 cut-off events. For 8837/8837 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3453 event pairs, 92 based on Foata normal form. 8/759 useless extension candidates. Maximal degree in co-relation 4920. Up to 631 conditions per place. [2024-11-07 11:23:32,672 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 127 selfloop transitions, 30 changer transitions 0/158 dead transitions. [2024-11-07 11:23:32,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 158 transitions, 1991 flow [2024-11-07 11:23:32,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-07 11:23:32,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-07 11:23:32,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 102 transitions. [2024-11-07 11:23:32,673 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33116883116883117 [2024-11-07 11:23:32,673 INFO L175 Difference]: Start difference. First operand has 163 places, 130 transitions, 1459 flow. Second operand 14 states and 102 transitions. [2024-11-07 11:23:32,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 158 transitions, 1991 flow [2024-11-07 11:23:32,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 158 transitions, 1885 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-11-07 11:23:32,694 INFO L231 Difference]: Finished difference. Result has 170 places, 136 transitions, 1534 flow [2024-11-07 11:23:32,694 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1361, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1534, PETRI_PLACES=170, PETRI_TRANSITIONS=136} [2024-11-07 11:23:32,694 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 148 predicate places. [2024-11-07 11:23:32,694 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 136 transitions, 1534 flow [2024-11-07 11:23:32,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.12) internal successors, (128), 25 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:32,694 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:32,694 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:23:32,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2024-11-07 11:23:32,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,40 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:32,896 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 11:23:32,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:32,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1624769889, now seen corresponding path program 36 times [2024-11-07 11:23:32,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:32,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340807206] [2024-11-07 11:23:32,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:32,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:32,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:33,243 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:33,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:33,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340807206] [2024-11-07 11:23:33,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340807206] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:23:33,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797913234] [2024-11-07 11:23:33,244 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-07 11:23:33,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:33,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:23:33,249 INFO L229 MonitoredProcess]: Starting monitored process 41 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 11:23:33,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-07 11:23:33,418 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-07 11:23:33,419 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:23:33,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-07 11:23:33,421 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:23:33,561 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:33,561 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:23:33,674 INFO L349 Elim1Store]: treesize reduction 24, result has 65.2 percent of original size [2024-11-07 11:23:33,675 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 63 treesize of output 67 [2024-11-07 11:23:33,702 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:33,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797913234] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:23:33,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:23:33,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 20 [2024-11-07 11:23:33,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624195947] [2024-11-07 11:23:33,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:23:33,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-07 11:23:33,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:33,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-07 11:23:33,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2024-11-07 11:23:33,704 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:23:33,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 136 transitions, 1534 flow. Second operand has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:33,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:33,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:23:33,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:34,090 INFO L124 PetriNetUnfolderBase]: 404/739 cut-off events. [2024-11-07 11:23:34,090 INFO L125 PetriNetUnfolderBase]: For 8130/8130 co-relation queries the response was YES. [2024-11-07 11:23:34,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5000 conditions, 739 events. 404/739 cut-off events. For 8130/8130 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3391 event pairs, 80 based on Foata normal form. 2/741 useless extension candidates. Maximal degree in co-relation 4897. Up to 409 conditions per place. [2024-11-07 11:23:34,097 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 96 selfloop transitions, 50 changer transitions 4/151 dead transitions. [2024-11-07 11:23:34,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 151 transitions, 1943 flow [2024-11-07 11:23:34,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 11:23:34,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 11:23:34,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 69 transitions. [2024-11-07 11:23:34,098 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-11-07 11:23:34,098 INFO L175 Difference]: Start difference. First operand has 170 places, 136 transitions, 1534 flow. Second operand 9 states and 69 transitions. [2024-11-07 11:23:34,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 151 transitions, 1943 flow [2024-11-07 11:23:34,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 151 transitions, 1822 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-11-07 11:23:34,121 INFO L231 Difference]: Finished difference. Result has 168 places, 133 transitions, 1475 flow [2024-11-07 11:23:34,121 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1404, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1475, PETRI_PLACES=168, PETRI_TRANSITIONS=133} [2024-11-07 11:23:34,121 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 146 predicate places. [2024-11-07 11:23:34,121 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 133 transitions, 1475 flow [2024-11-07 11:23:34,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:34,121 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:34,122 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:23:34,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-11-07 11:23:34,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-11-07 11:23:34,322 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 11:23:34,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:34,322 INFO L85 PathProgramCache]: Analyzing trace with hash 513309799, now seen corresponding path program 37 times [2024-11-07 11:23:34,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:34,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675040400] [2024-11-07 11:23:34,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:34,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:34,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:34,677 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:34,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:34,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675040400] [2024-11-07 11:23:34,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675040400] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:23:34,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805721455] [2024-11-07 11:23:34,677 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-07 11:23:34,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:34,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:23:34,680 INFO L229 MonitoredProcess]: Starting monitored process 42 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 11:23:34,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-07 11:23:34,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:34,852 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-07 11:23:34,853 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:23:34,919 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:23:34,919 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 46 treesize of output 34 [2024-11-07 11:23:34,959 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:34,959 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:23:35,076 INFO L349 Elim1Store]: treesize reduction 11, result has 85.7 percent of original size [2024-11-07 11:23:35,076 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 44 treesize of output 77 [2024-11-07 11:23:35,107 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:35,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805721455] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:23:35,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:23:35,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 18 [2024-11-07 11:23:35,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293061752] [2024-11-07 11:23:35,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:23:35,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-07 11:23:35,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:35,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-07 11:23:35,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-11-07 11:23:35,108 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:23:35,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 133 transitions, 1475 flow. Second operand has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:35,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:35,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:23:35,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:35,498 INFO L124 PetriNetUnfolderBase]: 404/740 cut-off events. [2024-11-07 11:23:35,498 INFO L125 PetriNetUnfolderBase]: For 8105/8105 co-relation queries the response was YES. [2024-11-07 11:23:35,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4973 conditions, 740 events. 404/740 cut-off events. For 8105/8105 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3387 event pairs, 124 based on Foata normal form. 5/745 useless extension candidates. Maximal degree in co-relation 4871. Up to 572 conditions per place. [2024-11-07 11:23:35,503 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 128 selfloop transitions, 33 changer transitions 4/166 dead transitions. [2024-11-07 11:23:35,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 166 transitions, 2096 flow [2024-11-07 11:23:35,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-07 11:23:35,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-07 11:23:35,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 103 transitions. [2024-11-07 11:23:35,504 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36013986013986016 [2024-11-07 11:23:35,504 INFO L175 Difference]: Start difference. First operand has 168 places, 133 transitions, 1475 flow. Second operand 13 states and 103 transitions. [2024-11-07 11:23:35,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 166 transitions, 2096 flow [2024-11-07 11:23:35,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 166 transitions, 1991 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-11-07 11:23:35,523 INFO L231 Difference]: Finished difference. Result has 172 places, 135 transitions, 1471 flow [2024-11-07 11:23:35,523 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1375, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1471, PETRI_PLACES=172, PETRI_TRANSITIONS=135} [2024-11-07 11:23:35,523 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 150 predicate places. [2024-11-07 11:23:35,524 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 135 transitions, 1471 flow [2024-11-07 11:23:35,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:35,524 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:35,524 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:23:35,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2024-11-07 11:23:35,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-11-07 11:23:35,727 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 11:23:35,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:35,728 INFO L85 PathProgramCache]: Analyzing trace with hash 753889306, now seen corresponding path program 38 times [2024-11-07 11:23:35,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:35,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257168182] [2024-11-07 11:23:35,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:35,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:35,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:36,053 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:36,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:36,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257168182] [2024-11-07 11:23:36,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257168182] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:23:36,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148043510] [2024-11-07 11:23:36,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:23:36,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:36,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:23:36,056 INFO L229 MonitoredProcess]: Starting monitored process 43 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 11:23:36,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-07 11:23:36,228 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:23:36,228 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:23:36,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-07 11:23:36,231 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:23:36,346 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-07 11:23:36,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 9 [2024-11-07 11:23:36,349 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:36,349 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:23:36,452 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-07 11:23:36,452 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 32 treesize of output 48 [2024-11-07 11:23:36,475 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:36,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148043510] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:23:36,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:23:36,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 18 [2024-11-07 11:23:36,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546988693] [2024-11-07 11:23:36,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:23:36,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-07 11:23:36,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:36,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-07 11:23:36,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2024-11-07 11:23:36,476 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:23:36,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 135 transitions, 1471 flow. Second operand has 18 states, 18 states have (on average 5.166666666666667) internal successors, (93), 18 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:36,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:36,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:23:36,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:36,782 INFO L124 PetriNetUnfolderBase]: 419/761 cut-off events. [2024-11-07 11:23:36,782 INFO L125 PetriNetUnfolderBase]: For 6372/6372 co-relation queries the response was YES. [2024-11-07 11:23:36,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5077 conditions, 761 events. 419/761 cut-off events. For 6372/6372 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3511 event pairs, 19 based on Foata normal form. 4/765 useless extension candidates. Maximal degree in co-relation 4976. Up to 362 conditions per place. [2024-11-07 11:23:36,791 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 101 selfloop transitions, 60 changer transitions 0/162 dead transitions. [2024-11-07 11:23:36,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 162 transitions, 2057 flow [2024-11-07 11:23:36,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 11:23:36,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-07 11:23:36,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 91 transitions. [2024-11-07 11:23:36,791 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3446969696969697 [2024-11-07 11:23:36,791 INFO L175 Difference]: Start difference. First operand has 172 places, 135 transitions, 1471 flow. Second operand 12 states and 91 transitions. [2024-11-07 11:23:36,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 162 transitions, 2057 flow [2024-11-07 11:23:36,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 162 transitions, 1940 flow, removed 21 selfloop flow, removed 16 redundant places. [2024-11-07 11:23:36,814 INFO L231 Difference]: Finished difference. Result has 169 places, 139 transitions, 1557 flow [2024-11-07 11:23:36,814 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1356, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1557, PETRI_PLACES=169, PETRI_TRANSITIONS=139} [2024-11-07 11:23:36,815 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 147 predicate places. [2024-11-07 11:23:36,815 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 139 transitions, 1557 flow [2024-11-07 11:23:36,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.166666666666667) internal successors, (93), 18 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:36,815 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:36,815 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:23:36,838 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-11-07 11:23:37,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-07 11:23:37,015 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:23:37,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:37,016 INFO L85 PathProgramCache]: Analyzing trace with hash 771972138, now seen corresponding path program 39 times [2024-11-07 11:23:37,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:37,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129084024] [2024-11-07 11:23:37,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:37,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:37,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:37,335 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:37,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:37,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129084024] [2024-11-07 11:23:37,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129084024] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:23:37,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402347353] [2024-11-07 11:23:37,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:23:37,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:37,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:23:37,337 INFO L229 MonitoredProcess]: Starting monitored process 44 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 11:23:37,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-07 11:23:37,501 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-07 11:23:37,501 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:23:37,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-07 11:23:37,504 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:23:37,634 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:37,634 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:23:37,727 INFO L349 Elim1Store]: treesize reduction 11, result has 85.7 percent of original size [2024-11-07 11:23:37,728 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 71 treesize of output 88 [2024-11-07 11:23:37,824 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:37,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402347353] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:23:37,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:23:37,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 20 [2024-11-07 11:23:37,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746716428] [2024-11-07 11:23:37,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:23:37,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-07 11:23:37,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:37,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-07 11:23:37,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2024-11-07 11:23:37,825 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:23:37,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 139 transitions, 1557 flow. Second operand has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:37,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:37,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:23:37,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:38,162 INFO L124 PetriNetUnfolderBase]: 416/758 cut-off events. [2024-11-07 11:23:38,162 INFO L125 PetriNetUnfolderBase]: For 6668/6668 co-relation queries the response was YES. [2024-11-07 11:23:38,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5118 conditions, 758 events. 416/758 cut-off events. For 6668/6668 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3500 event pairs, 143 based on Foata normal form. 3/761 useless extension candidates. Maximal degree in co-relation 5019. Up to 649 conditions per place. [2024-11-07 11:23:38,167 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 119 selfloop transitions, 24 changer transitions 8/152 dead transitions. [2024-11-07 11:23:38,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 152 transitions, 1924 flow [2024-11-07 11:23:38,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 11:23:38,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-07 11:23:38,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 72 transitions. [2024-11-07 11:23:38,168 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32727272727272727 [2024-11-07 11:23:38,168 INFO L175 Difference]: Start difference. First operand has 169 places, 139 transitions, 1557 flow. Second operand 10 states and 72 transitions. [2024-11-07 11:23:38,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 152 transitions, 1924 flow [2024-11-07 11:23:38,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 152 transitions, 1793 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-11-07 11:23:38,185 INFO L231 Difference]: Finished difference. Result has 169 places, 137 transitions, 1462 flow [2024-11-07 11:23:38,185 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1426, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1462, PETRI_PLACES=169, PETRI_TRANSITIONS=137} [2024-11-07 11:23:38,186 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 147 predicate places. [2024-11-07 11:23:38,186 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 137 transitions, 1462 flow [2024-11-07 11:23:38,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:38,186 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:38,186 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:23:38,201 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2024-11-07 11:23:38,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,44 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:38,386 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:23:38,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:38,387 INFO L85 PathProgramCache]: Analyzing trace with hash -952561480, now seen corresponding path program 40 times [2024-11-07 11:23:38,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:38,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237396862] [2024-11-07 11:23:38,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:38,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:38,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:38,710 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:38,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:38,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237396862] [2024-11-07 11:23:38,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237396862] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:23:38,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423474898] [2024-11-07 11:23:38,711 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 11:23:38,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:38,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:23:38,713 INFO L229 MonitoredProcess]: Starting monitored process 45 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 11:23:38,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-07 11:23:38,888 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 11:23:38,889 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:23:38,890 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-07 11:23:38,891 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:23:38,937 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:23:38,937 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 65 treesize of output 45 [2024-11-07 11:23:38,966 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:38,966 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:23:39,069 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-07 11:23:39,070 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 32 treesize of output 48 [2024-11-07 11:23:39,076 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:39,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423474898] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:23:39,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:23:39,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 19 [2024-11-07 11:23:39,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619460489] [2024-11-07 11:23:39,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:23:39,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-07 11:23:39,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:39,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-07 11:23:39,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2024-11-07 11:23:39,077 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:23:39,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 137 transitions, 1462 flow. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:39,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:39,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:23:39,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:39,516 INFO L124 PetriNetUnfolderBase]: 424/759 cut-off events. [2024-11-07 11:23:39,516 INFO L125 PetriNetUnfolderBase]: For 6218/6218 co-relation queries the response was YES. [2024-11-07 11:23:39,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5084 conditions, 759 events. 424/759 cut-off events. For 6218/6218 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3429 event pairs, 14 based on Foata normal form. 4/763 useless extension candidates. Maximal degree in co-relation 4987. Up to 340 conditions per place. [2024-11-07 11:23:39,522 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 98 selfloop transitions, 65 changer transitions 0/164 dead transitions. [2024-11-07 11:23:39,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 164 transitions, 2043 flow [2024-11-07 11:23:39,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-07 11:23:39,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-07 11:23:39,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 97 transitions. [2024-11-07 11:23:39,523 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33916083916083917 [2024-11-07 11:23:39,523 INFO L175 Difference]: Start difference. First operand has 169 places, 137 transitions, 1462 flow. Second operand 13 states and 97 transitions. [2024-11-07 11:23:39,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 164 transitions, 2043 flow [2024-11-07 11:23:39,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 164 transitions, 1979 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-11-07 11:23:39,542 INFO L231 Difference]: Finished difference. Result has 168 places, 140 transitions, 1596 flow [2024-11-07 11:23:39,543 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1389, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1596, PETRI_PLACES=168, PETRI_TRANSITIONS=140} [2024-11-07 11:23:39,543 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 146 predicate places. [2024-11-07 11:23:39,543 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 140 transitions, 1596 flow [2024-11-07 11:23:39,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:39,543 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:39,543 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:23:39,557 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-11-07 11:23:39,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-07 11:23:39,747 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:23:39,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:39,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1624305562, now seen corresponding path program 41 times [2024-11-07 11:23:39,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:39,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213881909] [2024-11-07 11:23:39,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:39,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:39,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:40,122 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:40,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:40,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213881909] [2024-11-07 11:23:40,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213881909] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:23:40,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960294963] [2024-11-07 11:23:40,123 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 11:23:40,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:40,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:23:40,127 INFO L229 MonitoredProcess]: Starting monitored process 46 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 11:23:40,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-07 11:23:40,341 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-07 11:23:40,341 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:23:40,343 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-07 11:23:40,345 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:23:40,415 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:23:40,416 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 46 treesize of output 34 [2024-11-07 11:23:40,452 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:40,453 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:23:40,552 INFO L349 Elim1Store]: treesize reduction 11, result has 85.7 percent of original size [2024-11-07 11:23:40,552 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 71 treesize of output 88 [2024-11-07 11:23:40,604 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:40,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960294963] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:23:40,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:23:40,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 21 [2024-11-07 11:23:40,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059369199] [2024-11-07 11:23:40,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:23:40,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-07 11:23:40,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:40,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-07 11:23:40,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2024-11-07 11:23:40,606 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:23:40,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 140 transitions, 1596 flow. Second operand has 21 states, 21 states have (on average 5.333333333333333) internal successors, (112), 21 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:40,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:40,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:23:40,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:40,919 INFO L124 PetriNetUnfolderBase]: 417/743 cut-off events. [2024-11-07 11:23:40,919 INFO L125 PetriNetUnfolderBase]: For 6750/6750 co-relation queries the response was YES. [2024-11-07 11:23:40,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5158 conditions, 743 events. 417/743 cut-off events. For 6750/6750 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3329 event pairs, 136 based on Foata normal form. 3/746 useless extension candidates. Maximal degree in co-relation 5062. Up to 636 conditions per place. [2024-11-07 11:23:40,924 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 121 selfloop transitions, 26 changer transitions 3/151 dead transitions. [2024-11-07 11:23:40,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 151 transitions, 1968 flow [2024-11-07 11:23:40,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 11:23:40,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-07 11:23:40,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 72 transitions. [2024-11-07 11:23:40,925 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32727272727272727 [2024-11-07 11:23:40,925 INFO L175 Difference]: Start difference. First operand has 168 places, 140 transitions, 1596 flow. Second operand 10 states and 72 transitions. [2024-11-07 11:23:40,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 151 transitions, 1968 flow [2024-11-07 11:23:40,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 151 transitions, 1830 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-11-07 11:23:40,944 INFO L231 Difference]: Finished difference. Result has 166 places, 138 transitions, 1490 flow [2024-11-07 11:23:40,945 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1448, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1490, PETRI_PLACES=166, PETRI_TRANSITIONS=138} [2024-11-07 11:23:40,945 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 144 predicate places. [2024-11-07 11:23:40,945 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 138 transitions, 1490 flow [2024-11-07 11:23:40,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.333333333333333) internal successors, (112), 21 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:40,945 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:40,945 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:23:40,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2024-11-07 11:23:41,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-07 11:23:41,150 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:23:41,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:41,150 INFO L85 PathProgramCache]: Analyzing trace with hash -738676521, now seen corresponding path program 42 times [2024-11-07 11:23:41,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:41,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131193008] [2024-11-07 11:23:41,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:41,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:41,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:41,512 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:41,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:41,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131193008] [2024-11-07 11:23:41,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131193008] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:23:41,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599787490] [2024-11-07 11:23:41,512 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-07 11:23:41,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:41,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:23:41,515 INFO L229 MonitoredProcess]: Starting monitored process 47 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 11:23:41,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-07 11:23:41,704 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-07 11:23:41,705 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:23:41,712 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-07 11:23:41,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:23:41,824 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:23:41,824 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 65 treesize of output 41 [2024-11-07 11:23:41,861 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:41,861 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:23:41,968 INFO L349 Elim1Store]: treesize reduction 11, result has 85.7 percent of original size [2024-11-07 11:23:41,968 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 44 treesize of output 77 [2024-11-07 11:23:42,009 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:42,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599787490] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:23:42,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:23:42,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 20 [2024-11-07 11:23:42,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285351128] [2024-11-07 11:23:42,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:23:42,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-07 11:23:42,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:42,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-07 11:23:42,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2024-11-07 11:23:42,011 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:23:42,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 138 transitions, 1490 flow. Second operand has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:42,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:42,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:23:42,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:42,327 INFO L124 PetriNetUnfolderBase]: 412/727 cut-off events. [2024-11-07 11:23:42,327 INFO L125 PetriNetUnfolderBase]: For 5885/5885 co-relation queries the response was YES. [2024-11-07 11:23:42,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4900 conditions, 727 events. 412/727 cut-off events. For 5885/5885 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3195 event pairs, 129 based on Foata normal form. 2/729 useless extension candidates. Maximal degree in co-relation 4805. Up to 598 conditions per place. [2024-11-07 11:23:42,333 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 122 selfloop transitions, 28 changer transitions 2/153 dead transitions. [2024-11-07 11:23:42,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 153 transitions, 1903 flow [2024-11-07 11:23:42,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 11:23:42,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 11:23:42,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 79 transitions. [2024-11-07 11:23:42,333 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32644628099173556 [2024-11-07 11:23:42,333 INFO L175 Difference]: Start difference. First operand has 166 places, 138 transitions, 1490 flow. Second operand 11 states and 79 transitions. [2024-11-07 11:23:42,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 153 transitions, 1903 flow [2024-11-07 11:23:42,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 153 transitions, 1811 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-11-07 11:23:42,350 INFO L231 Difference]: Finished difference. Result has 162 places, 136 transitions, 1436 flow [2024-11-07 11:23:42,351 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1388, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1436, PETRI_PLACES=162, PETRI_TRANSITIONS=136} [2024-11-07 11:23:42,351 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 140 predicate places. [2024-11-07 11:23:42,351 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 136 transitions, 1436 flow [2024-11-07 11:23:42,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:42,351 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:42,351 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:23:42,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2024-11-07 11:23:42,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,47 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:42,552 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:23:42,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:42,553 INFO L85 PathProgramCache]: Analyzing trace with hash -653163177, now seen corresponding path program 43 times [2024-11-07 11:23:42,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:42,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954029577] [2024-11-07 11:23:42,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:42,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:42,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:43,212 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-07 11:23:43,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:43,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954029577] [2024-11-07 11:23:43,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954029577] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:23:43,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418563347] [2024-11-07 11:23:43,212 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-07 11:23:43,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:43,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:23:43,214 INFO L229 MonitoredProcess]: Starting monitored process 48 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 11:23:43,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-11-07 11:23:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:43,394 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-07 11:23:43,395 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:23:43,497 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:23:43,497 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 23 [2024-11-07 11:23:43,533 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:43,533 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:23:43,886 INFO L349 Elim1Store]: treesize reduction 28, result has 61.6 percent of original size [2024-11-07 11:23:43,887 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 134 treesize of output 83 [2024-11-07 11:23:43,909 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:43,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418563347] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:23:43,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:23:43,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 10, 10] total 32 [2024-11-07 11:23:43,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137149308] [2024-11-07 11:23:43,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:23:43,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-07 11:23:43,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:43,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-07 11:23:43,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=883, Unknown=0, NotChecked=0, Total=992 [2024-11-07 11:23:43,910 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:23:43,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 136 transitions, 1436 flow. Second operand has 32 states, 32 states have (on average 4.65625) internal successors, (149), 32 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:43,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:43,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:23:43,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:45,012 INFO L124 PetriNetUnfolderBase]: 534/940 cut-off events. [2024-11-07 11:23:45,012 INFO L125 PetriNetUnfolderBase]: For 7441/7441 co-relation queries the response was YES. [2024-11-07 11:23:45,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6310 conditions, 940 events. 534/940 cut-off events. For 7441/7441 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4476 event pairs, 35 based on Foata normal form. 1/941 useless extension candidates. Maximal degree in co-relation 6216. Up to 356 conditions per place. [2024-11-07 11:23:45,019 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 126 selfloop transitions, 83 changer transitions 2/212 dead transitions. [2024-11-07 11:23:45,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 212 transitions, 2616 flow [2024-11-07 11:23:45,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-07 11:23:45,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-07 11:23:45,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 159 transitions. [2024-11-07 11:23:45,023 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3142292490118577 [2024-11-07 11:23:45,023 INFO L175 Difference]: Start difference. First operand has 162 places, 136 transitions, 1436 flow. Second operand 23 states and 159 transitions. [2024-11-07 11:23:45,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 212 transitions, 2616 flow [2024-11-07 11:23:45,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 212 transitions, 2536 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-11-07 11:23:45,045 INFO L231 Difference]: Finished difference. Result has 175 places, 155 transitions, 1892 flow [2024-11-07 11:23:45,045 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1380, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1892, PETRI_PLACES=175, PETRI_TRANSITIONS=155} [2024-11-07 11:23:45,046 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 153 predicate places. [2024-11-07 11:23:45,046 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 155 transitions, 1892 flow [2024-11-07 11:23:45,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.65625) internal successors, (149), 32 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:45,046 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:45,046 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:23:45,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2024-11-07 11:23:45,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,48 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:45,248 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:23:45,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:45,248 INFO L85 PathProgramCache]: Analyzing trace with hash 201268159, now seen corresponding path program 44 times [2024-11-07 11:23:45,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:45,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298030143] [2024-11-07 11:23:45,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:45,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:45,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:45,863 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-07 11:23:45,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:45,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298030143] [2024-11-07 11:23:45,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298030143] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:23:45,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686479526] [2024-11-07 11:23:45,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:23:45,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:45,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:23:45,866 INFO L229 MonitoredProcess]: Starting monitored process 49 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 11:23:45,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-07 11:23:46,052 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:23:46,052 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:23:46,054 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-07 11:23:46,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:23:46,175 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:23:46,176 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 19 [2024-11-07 11:23:46,203 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-07 11:23:46,203 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:23:46,442 INFO L349 Elim1Store]: treesize reduction 15, result has 80.5 percent of original size [2024-11-07 11:23:46,442 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 173 treesize of output 107 [2024-11-07 11:23:46,565 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:46,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686479526] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:23:46,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:23:46,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 10] total 33 [2024-11-07 11:23:46,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322995185] [2024-11-07 11:23:46,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:23:46,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-07 11:23:46,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:46,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-07 11:23:46,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=928, Unknown=0, NotChecked=0, Total=1056 [2024-11-07 11:23:46,567 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:23:46,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 155 transitions, 1892 flow. Second operand has 33 states, 33 states have (on average 4.696969696969697) internal successors, (155), 33 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:46,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:46,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:23:46,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:47,535 INFO L124 PetriNetUnfolderBase]: 597/1057 cut-off events. [2024-11-07 11:23:47,536 INFO L125 PetriNetUnfolderBase]: For 10614/10614 co-relation queries the response was YES. [2024-11-07 11:23:47,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7651 conditions, 1057 events. 597/1057 cut-off events. For 10614/10614 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5158 event pairs, 49 based on Foata normal form. 2/1059 useless extension candidates. Maximal degree in co-relation 7543. Up to 683 conditions per place. [2024-11-07 11:23:47,544 INFO L140 encePairwiseOnDemand]: 9/22 looper letters, 124 selfloop transitions, 89 changer transitions 2/216 dead transitions. [2024-11-07 11:23:47,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 216 transitions, 2928 flow [2024-11-07 11:23:47,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-07 11:23:47,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-07 11:23:47,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 184 transitions. [2024-11-07 11:23:47,545 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32167832167832167 [2024-11-07 11:23:47,545 INFO L175 Difference]: Start difference. First operand has 175 places, 155 transitions, 1892 flow. Second operand 26 states and 184 transitions. [2024-11-07 11:23:47,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 216 transitions, 2928 flow [2024-11-07 11:23:47,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 216 transitions, 2572 flow, removed 95 selfloop flow, removed 14 redundant places. [2024-11-07 11:23:47,579 INFO L231 Difference]: Finished difference. Result has 190 places, 176 transitions, 2181 flow [2024-11-07 11:23:47,580 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1594, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2181, PETRI_PLACES=190, PETRI_TRANSITIONS=176} [2024-11-07 11:23:47,580 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 168 predicate places. [2024-11-07 11:23:47,580 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 176 transitions, 2181 flow [2024-11-07 11:23:47,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.696969696969697) internal successors, (155), 33 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:47,581 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:47,581 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:23:47,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2024-11-07 11:23:47,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2024-11-07 11:23:47,782 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:23:47,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:47,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1509867643, now seen corresponding path program 45 times [2024-11-07 11:23:47,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:47,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887474775] [2024-11-07 11:23:47,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:47,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:47,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:48,415 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-07 11:23:48,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:48,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887474775] [2024-11-07 11:23:48,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887474775] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:23:48,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718669421] [2024-11-07 11:23:48,416 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:23:48,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:48,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:23:48,418 INFO L229 MonitoredProcess]: Starting monitored process 50 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 11:23:48,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-11-07 11:23:48,629 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-07 11:23:48,629 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:23:48,631 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-07 11:23:48,632 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:23:48,716 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:23:48,717 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 19 [2024-11-07 11:23:48,742 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:48,742 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:23:49,045 INFO L349 Elim1Store]: treesize reduction 15, result has 81.9 percent of original size [2024-11-07 11:23:49,045 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 181 treesize of output 113 [2024-11-07 11:23:49,129 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:49,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718669421] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:23:49,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:23:49,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 10] total 30 [2024-11-07 11:23:49,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363622246] [2024-11-07 11:23:49,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:23:49,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-07 11:23:49,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:49,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-07 11:23:49,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=765, Unknown=0, NotChecked=0, Total=870 [2024-11-07 11:23:49,131 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:23:49,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 176 transitions, 2181 flow. Second operand has 30 states, 30 states have (on average 4.766666666666667) internal successors, (143), 30 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:49,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:49,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:23:49,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:49,886 INFO L124 PetriNetUnfolderBase]: 613/1087 cut-off events. [2024-11-07 11:23:49,887 INFO L125 PetriNetUnfolderBase]: For 11385/11385 co-relation queries the response was YES. [2024-11-07 11:23:49,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7852 conditions, 1087 events. 613/1087 cut-off events. For 11385/11385 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5395 event pairs, 54 based on Foata normal form. 1/1088 useless extension candidates. Maximal degree in co-relation 7743. Up to 778 conditions per place. [2024-11-07 11:23:49,898 INFO L140 encePairwiseOnDemand]: 9/22 looper letters, 129 selfloop transitions, 75 changer transitions 2/207 dead transitions. [2024-11-07 11:23:49,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 207 transitions, 2851 flow [2024-11-07 11:23:49,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-07 11:23:49,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-07 11:23:49,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 130 transitions. [2024-11-07 11:23:49,899 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31100478468899523 [2024-11-07 11:23:49,899 INFO L175 Difference]: Start difference. First operand has 190 places, 176 transitions, 2181 flow. Second operand 19 states and 130 transitions. [2024-11-07 11:23:49,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 207 transitions, 2851 flow [2024-11-07 11:23:49,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 207 transitions, 2518 flow, removed 123 selfloop flow, removed 17 redundant places. [2024-11-07 11:23:49,945 INFO L231 Difference]: Finished difference. Result has 195 places, 187 transitions, 2208 flow [2024-11-07 11:23:49,946 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1860, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2208, PETRI_PLACES=195, PETRI_TRANSITIONS=187} [2024-11-07 11:23:49,946 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 173 predicate places. [2024-11-07 11:23:49,946 INFO L471 AbstractCegarLoop]: Abstraction has has 195 places, 187 transitions, 2208 flow [2024-11-07 11:23:49,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.766666666666667) internal successors, (143), 30 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:49,947 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:49,947 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:23:49,962 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2024-11-07 11:23:50,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,50 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:50,148 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:23:50,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:50,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1159621149, now seen corresponding path program 46 times [2024-11-07 11:23:50,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:50,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460978901] [2024-11-07 11:23:50,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:50,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:50,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:50,767 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-07 11:23:50,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:50,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460978901] [2024-11-07 11:23:50,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460978901] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:23:50,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900077612] [2024-11-07 11:23:50,768 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 11:23:50,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:50,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:23:50,770 INFO L229 MonitoredProcess]: Starting monitored process 51 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 11:23:50,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-11-07 11:23:50,963 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 11:23:50,964 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:23:50,965 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-07 11:23:50,966 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:23:51,062 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:23:51,063 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 23 [2024-11-07 11:23:51,095 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:51,095 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:23:51,370 INFO L349 Elim1Store]: treesize reduction 15, result has 80.5 percent of original size [2024-11-07 11:23:51,371 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 173 treesize of output 107 [2024-11-07 11:23:51,451 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:51,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900077612] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:23:51,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:23:51,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 10, 10] total 32 [2024-11-07 11:23:51,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686373029] [2024-11-07 11:23:51,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:23:51,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-07 11:23:51,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:51,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-07 11:23:51,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=882, Unknown=0, NotChecked=0, Total=992 [2024-11-07 11:23:51,453 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:23:51,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 187 transitions, 2208 flow. Second operand has 32 states, 32 states have (on average 4.65625) internal successors, (149), 32 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:51,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:51,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:23:51,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:52,682 INFO L124 PetriNetUnfolderBase]: 673/1200 cut-off events. [2024-11-07 11:23:52,682 INFO L125 PetriNetUnfolderBase]: For 10397/10397 co-relation queries the response was YES. [2024-11-07 11:23:52,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8321 conditions, 1200 events. 673/1200 cut-off events. For 10397/10397 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6011 event pairs, 51 based on Foata normal form. 4/1194 useless extension candidates. Maximal degree in co-relation 8208. Up to 794 conditions per place. [2024-11-07 11:23:52,692 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 155 selfloop transitions, 87 changer transitions 5/248 dead transitions. [2024-11-07 11:23:52,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 248 transitions, 3230 flow [2024-11-07 11:23:52,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-07 11:23:52,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-07 11:23:52,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 197 transitions. [2024-11-07 11:23:52,693 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33164983164983164 [2024-11-07 11:23:52,693 INFO L175 Difference]: Start difference. First operand has 195 places, 187 transitions, 2208 flow. Second operand 27 states and 197 transitions. [2024-11-07 11:23:52,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 248 transitions, 3230 flow [2024-11-07 11:23:52,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 248 transitions, 3018 flow, removed 59 selfloop flow, removed 13 redundant places. [2024-11-07 11:23:52,732 INFO L231 Difference]: Finished difference. Result has 213 places, 200 transitions, 2424 flow [2024-11-07 11:23:52,732 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1998, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2424, PETRI_PLACES=213, PETRI_TRANSITIONS=200} [2024-11-07 11:23:52,732 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 191 predicate places. [2024-11-07 11:23:52,732 INFO L471 AbstractCegarLoop]: Abstraction has has 213 places, 200 transitions, 2424 flow [2024-11-07 11:23:52,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.65625) internal successors, (149), 32 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:52,733 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:52,733 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:23:52,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2024-11-07 11:23:52,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,51 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:52,933 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:23:52,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:52,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1060737335, now seen corresponding path program 47 times [2024-11-07 11:23:52,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:52,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079349922] [2024-11-07 11:23:52,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:52,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:52,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:53,597 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-07 11:23:53,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:53,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079349922] [2024-11-07 11:23:53,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079349922] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:23:53,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77872619] [2024-11-07 11:23:53,597 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 11:23:53,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:53,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:23:53,600 INFO L229 MonitoredProcess]: Starting monitored process 52 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 11:23:53,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-11-07 11:23:53,851 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-07 11:23:53,851 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:23:53,853 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-07 11:23:53,854 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:23:53,966 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:23:53,966 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 23 [2024-11-07 11:23:54,012 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:54,012 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:23:54,247 INFO L349 Elim1Store]: treesize reduction 15, result has 80.5 percent of original size [2024-11-07 11:23:54,248 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 173 treesize of output 107 [2024-11-07 11:23:54,356 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:54,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77872619] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:23:54,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:23:54,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11, 10] total 36 [2024-11-07 11:23:54,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548038783] [2024-11-07 11:23:54,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:23:54,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-07 11:23:54,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:54,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-07 11:23:54,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1115, Unknown=0, NotChecked=0, Total=1260 [2024-11-07 11:23:54,358 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:23:54,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 200 transitions, 2424 flow. Second operand has 36 states, 36 states have (on average 4.777777777777778) internal successors, (172), 36 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:54,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:54,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:23:54,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:55,532 INFO L124 PetriNetUnfolderBase]: 677/1216 cut-off events. [2024-11-07 11:23:55,532 INFO L125 PetriNetUnfolderBase]: For 11654/11654 co-relation queries the response was YES. [2024-11-07 11:23:55,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8648 conditions, 1216 events. 677/1216 cut-off events. For 11654/11654 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6182 event pairs, 66 based on Foata normal form. 2/1208 useless extension candidates. Maximal degree in co-relation 8530. Up to 809 conditions per place. [2024-11-07 11:23:55,542 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 144 selfloop transitions, 91 changer transitions 7/243 dead transitions. [2024-11-07 11:23:55,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 243 transitions, 3207 flow [2024-11-07 11:23:55,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-07 11:23:55,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-07 11:23:55,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 185 transitions. [2024-11-07 11:23:55,544 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32342657342657344 [2024-11-07 11:23:55,544 INFO L175 Difference]: Start difference. First operand has 213 places, 200 transitions, 2424 flow. Second operand 26 states and 185 transitions. [2024-11-07 11:23:55,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 243 transitions, 3207 flow [2024-11-07 11:23:55,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 243 transitions, 2987 flow, removed 51 selfloop flow, removed 19 redundant places. [2024-11-07 11:23:55,588 INFO L231 Difference]: Finished difference. Result has 221 places, 201 transitions, 2434 flow [2024-11-07 11:23:55,589 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2204, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2434, PETRI_PLACES=221, PETRI_TRANSITIONS=201} [2024-11-07 11:23:55,589 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 199 predicate places. [2024-11-07 11:23:55,589 INFO L471 AbstractCegarLoop]: Abstraction has has 221 places, 201 transitions, 2434 flow [2024-11-07 11:23:55,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.777777777777778) internal successors, (172), 36 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:55,590 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:55,590 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:23:55,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2024-11-07 11:23:55,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2024-11-07 11:23:55,790 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:23:55,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:55,791 INFO L85 PathProgramCache]: Analyzing trace with hash 472560285, now seen corresponding path program 48 times [2024-11-07 11:23:55,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:55,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928112895] [2024-11-07 11:23:55,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:55,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:55,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:56,429 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-07 11:23:56,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:56,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928112895] [2024-11-07 11:23:56,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928112895] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:23:56,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335835114] [2024-11-07 11:23:56,430 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-07 11:23:56,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:56,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:23:56,432 INFO L229 MonitoredProcess]: Starting monitored process 53 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 11:23:56,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-11-07 11:23:56,640 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-07 11:23:56,641 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:23:56,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-07 11:23:56,643 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:23:56,745 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:23:56,745 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 19 [2024-11-07 11:23:56,799 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:56,799 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:23:57,132 INFO L349 Elim1Store]: treesize reduction 15, result has 81.9 percent of original size [2024-11-07 11:23:57,133 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 181 treesize of output 113 [2024-11-07 11:23:57,222 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:57,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335835114] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:23:57,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:23:57,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 10] total 32 [2024-11-07 11:23:57,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948014370] [2024-11-07 11:23:57,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:23:57,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-07 11:23:57,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:57,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-07 11:23:57,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=879, Unknown=0, NotChecked=0, Total=992 [2024-11-07 11:23:57,224 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:23:57,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 201 transitions, 2434 flow. Second operand has 32 states, 32 states have (on average 4.71875) internal successors, (151), 32 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:57,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:57,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:23:57,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:58,197 INFO L124 PetriNetUnfolderBase]: 682/1235 cut-off events. [2024-11-07 11:23:58,197 INFO L125 PetriNetUnfolderBase]: For 11886/11886 co-relation queries the response was YES. [2024-11-07 11:23:58,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8806 conditions, 1235 events. 682/1235 cut-off events. For 11886/11886 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6380 event pairs, 77 based on Foata normal form. 2/1237 useless extension candidates. Maximal degree in co-relation 8686. Up to 898 conditions per place. [2024-11-07 11:23:58,208 INFO L140 encePairwiseOnDemand]: 9/22 looper letters, 145 selfloop transitions, 76 changer transitions 5/227 dead transitions. [2024-11-07 11:23:58,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 227 transitions, 3063 flow [2024-11-07 11:23:58,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-07 11:23:58,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-07 11:23:58,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 135 transitions. [2024-11-07 11:23:58,209 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3068181818181818 [2024-11-07 11:23:58,209 INFO L175 Difference]: Start difference. First operand has 221 places, 201 transitions, 2434 flow. Second operand 20 states and 135 transitions. [2024-11-07 11:23:58,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 227 transitions, 3063 flow [2024-11-07 11:23:58,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 227 transitions, 2908 flow, removed 9 selfloop flow, removed 22 redundant places. [2024-11-07 11:23:58,253 INFO L231 Difference]: Finished difference. Result has 221 places, 203 transitions, 2499 flow [2024-11-07 11:23:58,254 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2279, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2499, PETRI_PLACES=221, PETRI_TRANSITIONS=203} [2024-11-07 11:23:58,254 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 199 predicate places. [2024-11-07 11:23:58,254 INFO L471 AbstractCegarLoop]: Abstraction has has 221 places, 203 transitions, 2499 flow [2024-11-07 11:23:58,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.71875) internal successors, (151), 32 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:58,254 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:58,254 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:23:58,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2024-11-07 11:23:58,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-11-07 11:23:58,459 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:23:58,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:58,459 INFO L85 PathProgramCache]: Analyzing trace with hash 548707809, now seen corresponding path program 49 times [2024-11-07 11:23:58,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:58,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328010775] [2024-11-07 11:23:58,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:58,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:58,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:59,008 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-07 11:23:59,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:59,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328010775] [2024-11-07 11:23:59,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328010775] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:23:59,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934585314] [2024-11-07 11:23:59,009 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-07 11:23:59,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:59,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:23:59,014 INFO L229 MonitoredProcess]: Starting monitored process 54 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 11:23:59,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-11-07 11:23:59,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:59,212 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-07 11:23:59,213 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:23:59,295 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:23:59,296 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 23 [2024-11-07 11:23:59,343 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:59,343 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:23:59,661 INFO L349 Elim1Store]: treesize reduction 15, result has 81.9 percent of original size [2024-11-07 11:23:59,661 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 181 treesize of output 113 [2024-11-07 11:23:59,747 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:23:59,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934585314] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:23:59,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:23:59,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 10, 10] total 33 [2024-11-07 11:23:59,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193926178] [2024-11-07 11:23:59,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:23:59,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-07 11:23:59,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:59,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-07 11:23:59,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=925, Unknown=0, NotChecked=0, Total=1056 [2024-11-07 11:23:59,748 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:23:59,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 203 transitions, 2499 flow. Second operand has 33 states, 33 states have (on average 4.636363636363637) internal successors, (153), 33 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:59,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:59,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:23:59,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:24:00,710 INFO L124 PetriNetUnfolderBase]: 748/1355 cut-off events. [2024-11-07 11:24:00,710 INFO L125 PetriNetUnfolderBase]: For 14574/14574 co-relation queries the response was YES. [2024-11-07 11:24:00,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9976 conditions, 1355 events. 748/1355 cut-off events. For 14574/14574 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 7163 event pairs, 84 based on Foata normal form. 3/1358 useless extension candidates. Maximal degree in co-relation 9853. Up to 1156 conditions per place. [2024-11-07 11:24:00,726 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 193 selfloop transitions, 52 changer transitions 2/248 dead transitions. [2024-11-07 11:24:00,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 248 transitions, 3504 flow [2024-11-07 11:24:00,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-07 11:24:00,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-07 11:24:00,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 162 transitions. [2024-11-07 11:24:00,727 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3068181818181818 [2024-11-07 11:24:00,727 INFO L175 Difference]: Start difference. First operand has 221 places, 203 transitions, 2499 flow. Second operand 24 states and 162 transitions. [2024-11-07 11:24:00,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 248 transitions, 3504 flow [2024-11-07 11:24:00,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 248 transitions, 3371 flow, removed 15 selfloop flow, removed 16 redundant places. [2024-11-07 11:24:00,774 INFO L231 Difference]: Finished difference. Result has 232 places, 214 transitions, 2721 flow [2024-11-07 11:24:00,775 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2370, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2721, PETRI_PLACES=232, PETRI_TRANSITIONS=214} [2024-11-07 11:24:00,775 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 210 predicate places. [2024-11-07 11:24:00,775 INFO L471 AbstractCegarLoop]: Abstraction has has 232 places, 214 transitions, 2721 flow [2024-11-07 11:24:00,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.636363636363637) internal successors, (153), 33 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:24:00,775 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:24:00,775 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:24:00,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2024-11-07 11:24:00,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-11-07 11:24:00,980 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:24:00,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:24:00,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1691008065, now seen corresponding path program 50 times [2024-11-07 11:24:00,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:24:00,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007133584] [2024-11-07 11:24:00,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:24:00,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:24:00,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:24:01,563 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-07 11:24:01,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:24:01,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007133584] [2024-11-07 11:24:01,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007133584] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:24:01,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208274726] [2024-11-07 11:24:01,564 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:24:01,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:24:01,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:24:01,566 INFO L229 MonitoredProcess]: Starting monitored process 55 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 11:24:01,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-11-07 11:24:01,786 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:24:01,786 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:24:01,788 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-07 11:24:01,789 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:24:01,917 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:24:01,917 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 19 [2024-11-07 11:24:01,952 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-07 11:24:01,952 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:24:02,298 INFO L349 Elim1Store]: treesize reduction 15, result has 81.9 percent of original size [2024-11-07 11:24:02,298 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 181 treesize of output 113 [2024-11-07 11:24:02,410 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:24:02,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208274726] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:24:02,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:24:02,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 10] total 31 [2024-11-07 11:24:02,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929094908] [2024-11-07 11:24:02,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:24:02,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-07 11:24:02,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:24:02,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-07 11:24:02,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=821, Unknown=0, NotChecked=0, Total=930 [2024-11-07 11:24:02,412 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:24:02,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 214 transitions, 2721 flow. Second operand has 31 states, 31 states have (on average 4.741935483870968) internal successors, (147), 31 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:24:02,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:24:02,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:24:02,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:24:03,466 INFO L124 PetriNetUnfolderBase]: 813/1474 cut-off events. [2024-11-07 11:24:03,466 INFO L125 PetriNetUnfolderBase]: For 17339/17339 co-relation queries the response was YES. [2024-11-07 11:24:03,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11126 conditions, 1474 events. 813/1474 cut-off events. For 17339/17339 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 8002 event pairs, 102 based on Foata normal form. 2/1476 useless extension candidates. Maximal degree in co-relation 11000. Up to 1274 conditions per place. [2024-11-07 11:24:03,476 INFO L140 encePairwiseOnDemand]: 9/22 looper letters, 203 selfloop transitions, 64 changer transitions 3/271 dead transitions. [2024-11-07 11:24:03,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 271 transitions, 3878 flow [2024-11-07 11:24:03,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-07 11:24:03,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-07 11:24:03,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 170 transitions. [2024-11-07 11:24:03,477 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32196969696969696 [2024-11-07 11:24:03,478 INFO L175 Difference]: Start difference. First operand has 232 places, 214 transitions, 2721 flow. Second operand 24 states and 170 transitions. [2024-11-07 11:24:03,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 271 transitions, 3878 flow [2024-11-07 11:24:03,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 271 transitions, 3726 flow, removed 44 selfloop flow, removed 17 redundant places. [2024-11-07 11:24:03,529 INFO L231 Difference]: Finished difference. Result has 246 places, 238 transitions, 3210 flow [2024-11-07 11:24:03,532 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2569, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3210, PETRI_PLACES=246, PETRI_TRANSITIONS=238} [2024-11-07 11:24:03,533 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 224 predicate places. [2024-11-07 11:24:03,533 INFO L471 AbstractCegarLoop]: Abstraction has has 246 places, 238 transitions, 3210 flow [2024-11-07 11:24:03,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.741935483870968) internal successors, (147), 31 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:24:03,533 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:24:03,533 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:24:03,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2024-11-07 11:24:03,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,55 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:24:03,734 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:24:03,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:24:03,734 INFO L85 PathProgramCache]: Analyzing trace with hash 43647649, now seen corresponding path program 51 times [2024-11-07 11:24:03,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:24:03,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63505489] [2024-11-07 11:24:03,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:24:03,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:24:03,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:24:04,299 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-07 11:24:04,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:24:04,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63505489] [2024-11-07 11:24:04,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63505489] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:24:04,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324957844] [2024-11-07 11:24:04,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:24:04,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:24:04,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:24:04,302 INFO L229 MonitoredProcess]: Starting monitored process 56 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 11:24:04,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-11-07 11:24:04,502 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-07 11:24:04,502 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:24:04,504 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-07 11:24:04,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:24:04,610 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:24:04,611 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 19 [2024-11-07 11:24:04,662 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-07 11:24:04,662 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:24:04,914 INFO L349 Elim1Store]: treesize reduction 15, result has 80.5 percent of original size [2024-11-07 11:24:04,914 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 173 treesize of output 107 [2024-11-07 11:24:05,026 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-07 11:24:05,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324957844] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:24:05,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:24:05,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 10] total 33 [2024-11-07 11:24:05,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482721489] [2024-11-07 11:24:05,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:24:05,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-07 11:24:05,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:24:05,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-07 11:24:05,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=930, Unknown=0, NotChecked=0, Total=1056 [2024-11-07 11:24:05,028 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:24:05,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 238 transitions, 3210 flow. Second operand has 33 states, 33 states have (on average 4.696969696969697) internal successors, (155), 33 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:24:05,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:24:05,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:24:05,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:24:06,344 INFO L124 PetriNetUnfolderBase]: 855/1549 cut-off events. [2024-11-07 11:24:06,344 INFO L125 PetriNetUnfolderBase]: For 21882/21882 co-relation queries the response was YES. [2024-11-07 11:24:06,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12313 conditions, 1549 events. 855/1549 cut-off events. For 21882/21882 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 8492 event pairs, 102 based on Foata normal form. 3/1552 useless extension candidates. Maximal degree in co-relation 12179. Up to 1340 conditions per place. [2024-11-07 11:24:06,360 INFO L140 encePairwiseOnDemand]: 9/22 looper letters, 222 selfloop transitions, 58 changer transitions 5/286 dead transitions. [2024-11-07 11:24:06,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 286 transitions, 4300 flow [2024-11-07 11:24:06,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-07 11:24:06,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-07 11:24:06,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 180 transitions. [2024-11-07 11:24:06,361 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3146853146853147 [2024-11-07 11:24:06,361 INFO L175 Difference]: Start difference. First operand has 246 places, 238 transitions, 3210 flow. Second operand 26 states and 180 transitions. [2024-11-07 11:24:06,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 286 transitions, 4300 flow